The Cold Spray Materials Deposition Process

The Cold Spray Materials Deposition Process Book PDF
✏Book Title : The Cold Spray Materials Deposition Process
✏Author :
✏Publisher : Elsevier
✏Release Date : 2007-09-21
✏Pages : 376
✏ISBN : 9781845693787
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏The Cold Spray Materials Deposition Process Book Summary : The cold spray process produces dense, low oxide coatings which can be used in such diverse applications as corrosion control and metals repair. It has emerged as an important alternative to thermal spray coating techniques in certain areas. This pioneering book reviews both the fundamentals of the process and how it can best be applied in practice. The first part of the book discusses the development of the process together with its advantages and disadvantages in comparison with thermal spray coating techniques. Part two reviews key process parameters such as powders, nozzle design, particle temperature and velocity, and particle/substrate interaction. It also describes portable and stationary cold spray systems. The final part of the book discusses how the cold spray process can be applied in such areas as improved wear, corrosion protection, electromagnetic interference shielding and repair of damaged components. The cold spray materials deposition process is a standard reference on this important process and its industrial applications. Examines the fundamentals of the cold spraying process Assesses how the technique can best be applied in practice Describes portable and stationary cold spray systems

Simulation Of Cold Spray Particle Deposition Process Book PDF
✏Book Title : Simulation of Cold Spray Particle Deposition Process
✏Author : Jing Xie
✏Publisher :
✏Release Date : 2014
✏Pages : 180
✏ISBN : OCLC:1161989567
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Simulation of Cold Spray Particle Deposition Process Book Summary : Cold spray is a rapidly developing coating technology for depositing materials in the solid state. The cold spray particle deposition process was simulated by modeling the high velocity impacts of spherical particles onto a flat substrate under various conditions. We, for the first time, proposed the Couple Eulerian Lagrangian (CEL) numerical approach to solve the high strain rate deformation problem. The capability of the CEL numerical approach in modeling the Cold Spray deposition process was verified through a systematic parameter study, including impact velocity, initial particle temperature, friction coefficient and materials combination. The simulation results by using the CEL numerical approach agree with the experimental results published in the literature. Comparing with other numerical approaches, which are Lagrangian, ALE and SPH, the CEL analyses are generally more accurate and more robust in higher deformation regimes. Besides simulating the single particle impact problem, we also extended our study into the simulation of multiple impacts. A FCC-like particles arrangement model that inspired by the crystal structure was built to investigate the porosity rate and residual stress of deposited particles under various conditions. We observed not only the 3D profiles of voids, but also their distributions and developments during different procedures. Higher impact velocity and higher initial temperature of particles are both of benefit to produce a denser cold spray coating. The compressive residual stresses existed in the interface between the particle and substrate is mainly caused by the large and fast plastic deformation. Another simplified model for multiple impacts was created for the simulation of surface erosion. A severe surface erosion is the result of a high impact velocity, a high friction coefficient and a low contact angle. Two element failure models suitable for high-strain-rate dynamic problems were introduced in this study. For a ductile material as Copper, it followed two fracture modes in our study, which are tensile failure mode and shear failure mode. The former one mainly occurred beneath the substrate surface and the periphery of substrate craters, nevertheless the latter one was found predominately at the surface of craters. Four steps were found during the propagation of crack: void formation; crack formation; crack growth; coalescence and failure. A simple criterion equation was derived based on the simulation results for predicting the initiation of damage, which the erosion velocity v_{ero} is a function of contact angle and erosion velocity for normal impact v_{pi/2}. The equivalent plastic strain could also be a parameter for identifying the onset of damage, identified as being 1.042 for Copper in our study.

Cold Spray In The Realm Of Additive Manufacturing Book PDF
✏Book Title : Cold Spray in the Realm of Additive Manufacturing
✏Author : Sunil Pathak
✏Publisher : Springer Nature
✏Release Date : 2020-05-12
✏Pages : 245
✏ISBN : 9783030427566
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Cold Spray in the Realm of Additive Manufacturing Book Summary : This book sheds light on the development of the cold spray process in applications of additive manufacturing (AM) and repair/remanufacturing engineering. It covers the process fundamentals of different cold spray techniques, namely low pressure cold spray and high pressure cold spray process. Bonding mechanism and powder substrate interface are an important part of the book. The chapters present the recent developments in materials used in cold spraying for AM and various coating applications. The latest research in this area as well as possible avenues of future research are also highlighted as a way to encourage the researchers.

Particle Velocity And Deposition Efficiency In The Cold Spray Process Book PDF
✏Book Title : Particle Velocity and Deposition Efficiency in the Cold Spray Process
✏Author :
✏Publisher :
✏Release Date : 1998
✏Pages :
✏ISBN : OCLC:727260081
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Particle Velocity and Deposition Efficiency in the Cold Spray Process Book Summary : Copper powder was sprayed by the cold-gas dynamic method. In-flight particle velocities were measured with a laser-two-focus system as a function of process parameters such as gas temperature, gas pressure, and powder feed rate. Particle velocities were uniform in a relatively large volume within the plume and agreed with theoretical predictions. The presence of the substrate was found to have no significant effect on particle velocities. Cold-spray deposition efficiencies were measured on aluminum substrates as a function of particle velocity and incident angle of the plume. Deposition efficiencies of up to 95% were achieved. The critical velocity for deposition was determined to be about 640 meters per second. This work investigates both the in-flight characteristics of copper particles in a supersonic cold-spray plume and the build-up of the subsequent coating on aluminum substrates. Velocities were found to be relatively constant within a large volume of the plume. Particle counts dropped off sharply away from the central axis. The presence of a substrate was found to have no effect on the velocity of the particles. A substantial mass-loading effect on the particle velocity was observed; particle velocities begin to drop as the mass ratio of powder to gas flow rates exceeds 3%. The measured variation of velocity with gas pressure and pre-heat temperature was in fairly good agreement with theoretical predictions. Helium may be used as the driving gas instead of air in order to achieve higher particle velocities for a given temperature and pressure. Coating deposition efficiencies were found to increase with particle velocity and decrease with gun- substrate angle. There did not appear to be any dependence of the deposition efficiency on coating thickness. A critical velocity for deposition of about 640 mk appears to fit the data well. The cold-spray technique shows promise as a method for the deposition of materials which are thermally sensitive or may experience rapid oxidation under typical thermal spray conditions. High deposition efficiencies are achievable for certain coating-substrate conditions. Work remains to determine the material and microstructural properties which govern the coating process.

📒Cold Spray Technology ✍ Anatolii Papyrin

Cold Spray Technology Book PDF
✏Book Title : Cold Spray Technology
✏Author : Anatolii Papyrin
✏Publisher : Elsevier
✏Release Date : 2006-10-04
✏Pages : 336
✏ISBN : 008046548X
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Cold Spray Technology Book Summary : The topic of this book is Cold Spray technology. Cold Spray is a process of applying coatings by exposing a metallic or dielectric substrate to a high velocity (300 to 1200 m/s) jet of small (1 to 50 μm) particles accelerated by a supersonic jet of compressed gas. This process is based on the selection of the combination of particle temperature, velocity, and size that allows spraying at the lowest temperature possible. In the Cold Spray process, powder particles are accelerated by the supersonic gas jet at a temperature that is always lower than the melting point of the material, resulting in coating formation from particles in the solid state. As a consequence, the deleterious effects of high-temperature oxidation, evaporation, melting, crystallization, residual stresses, gas release, and other common problems for traditional thermal spray methods are minimized or eliminated. This book is the first of its kind on the Cold Spray process. Cold Spray Technology covers a wide spectrum of various aspects of the Cold Spray technology, including gas-dynamics, physics of interaction of high-speed solid particles with a substrate as well as equipment, technologies, and applications. Cold Spray Technology includes the results of more than 20 years of original studies (1984-2005) conducted at the Institute of Theoretical and Applied Mechanics of the Siberian Division of the Russian Academy of Science, as well as the results of studies conducted at most of the research centres around the world. The authors' goal is threefold. The first goal is to explain basic principles and advantages of the Cold Spray process. The second goal is, to give practical information on technologies and equipment. The third goal is to present the current state of research and development in this field over the world. The book provides coverage and data that will be of interest for users of Cold Spray technology as well as for other coating experts. At the present time the Cold Spray method is recognized by world leading scientists and specialists. A wide spectrum of research is being conducted at many research centres and companies in many countries. New approach to spray coatings Results are exceptionally pure coatings Low spray temperature without degradation of powder and substrate materials High productivity, high deposition efficiency High operational safety because of absence of high temperature gas jets, radiation and explosive gases Excellent thermal and electrical conductivity Wide spectrum of applications because of important advantages of the process

📒Cold Spray Coatings ✍ Pasquale Cavaliere

Cold Spray Coatings Book PDF
✏Book Title : Cold Spray Coatings
✏Author : Pasquale Cavaliere
✏Publisher : Springer
✏Release Date : 2017-11-08
✏Pages : 570
✏ISBN : 9783319671833
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Cold Spray Coatings Book Summary : This book combines the contributions of experts in the field to describe the behavior of various materials, micromechanisms involved during processing, and the optimization of cold-spray technology. It spans production, characterization, and applications including wear resistance, fatigue, life improvement, thermal barriers, crack repair, and biological applications. Cold spray is an innovative coating technology based on the kinetic energy gained by particles sprayed at very high pressures. While the technique was developed in the 1990s, industrial and scientific interest in this technology has grown vastly in the last ten years. Recently, many interesting applications have been associated with cold-sprayed coatings, including wear resistance, fatigue life improvement, thermal barriers, biological applications, and crack repair. However, many fundamental aspects require clarification and description.

Powder Consolidation Using Cold Spray Book PDF
✏Book Title : Powder Consolidation Using Cold Spray
✏Author : Atieh Moridi
✏Publisher : Springer
✏Release Date : 2016-11-10
✏Pages : 127
✏ISBN : 9783319299624
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Powder Consolidation Using Cold Spray Book Summary : This book first presents different approaches to modeling of the cold spray process with the aim of extending current understanding of its fundamental principles and then describes emerging applications of cold spray. In the coverage of modeling, careful attention is devoted to the assessment of critical and erosion velocities. In order to reveal the phenomenological characteristics of interface bonding, severe, localized plastic deformation and material jet formation are studied. Detailed consideration is also given to the effect of macroscopic defects such as interparticle boundaries and subsequent splat boundary cracking on the mechanical behavior of cold spray coatings. The discussion of applications focuses in particular on the repair of damaged parts and additive manufacturing in various disciplines from aerospace to biomedical engineering. Key aspects include a systematic study of defect shape and the ability of cold spray to fill the defect, examination of the fatigue behavior of coatings for structural applications, and a novel working window at subcritical conditions to obtain porous structures. This book is exceptional in scope, and its review of finite element modelling at different length scales sheds light on future design and process improvement in emerging applications such as structural repair, metal additive manufacturing and metal foam design.

📒Thermal Process Modeling 2014 ✍ B. Lynn Ferguson, Robert Goldstein, Scott MacKenzie, and Rozalia Papp

Thermal Process Modeling 2014  Book PDF
✏Book Title : Thermal Process Modeling 2014
✏Author : B. Lynn Ferguson, Robert Goldstein, Scott MacKenzie, and Rozalia Papp
✏Publisher : ASM International
✏Release Date : 2014-06-01
✏Pages : 342
✏ISBN : 9781627080682
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Thermal Process Modeling 2014 Book Summary : Thermal processes are key manufacturing steps in producing durable and useful products, with solidification, welding, heat treating, and surface engineering being primary steps. These papers represent the latest state-of-the-art in thermal process modeling. The breadth of topics covers the depth of the industry.

Investigation Of Mechanisms Of Metallic Cold Spray Coating Formation And Relevant Corrosion And Irradiation Behaviors Book PDF
✏Book Title : Investigation of Mechanisms of Metallic Cold Spray Coating Formation and Relevant Corrosion and Irradiation Behaviors
✏Author : Benjamin Richard Maier
✏Publisher :
✏Release Date : 2019
✏Pages : 132
✏ISBN : OCLC:1141858746
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Investigation of Mechanisms of Metallic Cold Spray Coating Formation and Relevant Corrosion and Irradiation Behaviors Book Summary : Zirconium-alloy fuel claddings in light water reactors (LWR) are susceptible to severe oxidation at high temperatures associated with off-normal or accident scenarios such as the Fukushima-Daiichi accident in 2011. Consequently, alternative options that resist such degradation are being actively investigated. In particular, protective coatings on fuel cladding that reduce or prevent severe oxidation of Zr-alloys are being investigated as near-term options. In this doctoral work, coatings of metallic chromium were deposited onto Zr-alloys using a solid state material deposition process called cold spray. The powders and the resultant coatings were characterized using scanning and transmission electron microscopy (SEM/TEM), energy dispersive spectroscopy (EDS), and x-ray diffraction. The microstructure and the quality of the cold spray coating is strongly dependent on the morphology, microstructure, and hardness of the feed-stock powder, and this effect was investigated using powders manufactured using three unique routes. Powders with larger initial grain size and lower dislocation density exhibited more plastic deformation and dynamic recrystallization resulting in grain refinement. Harder particles exhibited minimal plastic deformation, but formed an effective coating from frictional interparticle sliding during impact. Additions of helium to the carrier gas resulted in higher particle velocities and more dynamic recrystallization and thicker coatings. The corrosion behavior of Cr coatings was tested in steam and air environments, and parameters related to their oxidations kinetics were quantified. A parabolic rate law was observed at temperatures up to 1100 [degrees]C with rate constants (Kp) in the range of 1.0x10-11 to 1.0x10^-10 g^2/cm^4*s, with some volatilization of the Cr-oxide above 1200 [degrees]C. The scale formed in the steam environment had smaller grains and needle/whisker features on the outermost surface due to faster adsorption of water than oxygen with nucleation and growth at preferred surface sites. In-situ TEM examinations of defect evolution during ion irradiation were performed on annealed and as-deposited Cr coatings irradiated using 1 MeV Kr[superscript +2] ions. The heavily deformed coating microstructure resisted the onset and evolution of radiation defects. Very little interaction was observed at the Cr -Zr interface based on TEM images and scanning TEM with EDS compositional line-scans performed at nanometer length scales.

Handbook Of Thermal Spray Technology Book PDF
✏Book Title : Handbook of Thermal Spray Technology
✏Author : Joseph R. Davis
✏Publisher : ASM International
✏Release Date : 2004-01-01
✏Pages : 338
✏ISBN : 9780871707956
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Handbook of Thermal Spray Technology Book Summary : This reference covers principles, processes, types of coatings, applications, performance, and testing and analysis of thermal spray technology. It will serve as an introduction and guide for those new to thermal spray, and as a reference for specifiers and users of thermal spray coatings and thermal spray experts. Coverage encompasses basics of th

Through Life Engineering Services Book PDF
✏Book Title : Through life Engineering Services
✏Author : Louis Redding
✏Publisher : Springer
✏Release Date : 2014-12-26
✏Pages : 457
✏ISBN : 9783319121116
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Through life Engineering Services Book Summary : Demonstrating the latest research and analysis in the area of through-life engineering services (TES), this book utilizes case studies and expert analysis from an international array of practitioners and researchers – who together represent multiple manufacturing sectors: aerospace, railway and automotive – to maximize reader insights into the field of through-life engineering services. As part of the EPSRC Centre in Through-life Engineering Services program to support the academic and industrial community, this book presents an overview of non-destructive testing techniques and applications and provides the reader with the information needed to assess degradation and possible automation of through-life engineering service activities . The latest developments in maintenance-repair-overhaul (MRO) are presented with emphasis on cleaning technologies, repair and overhaul approaches and planning and digital assistance. The impact of these technologies on sustainable enterprises is also analyzed. This book will help to support the existing TES community and will provide future studies with a strong base from which to analyze and apply techn9olgical trends to real world examples.

📒Thermal Spray 2007 Global Coating Solutions Proceedings Of The 2007 International Thermal Spray Conference ✍ Edited by Basil R. Marple, Margaret M. Hyland, Yuk-Chiu Lau, Chang-Jiu Li, Rogerio S. Lima, Ghislain Montavon

Thermal Spray 2007 Global Coating Solutions Proceedings Of The 2007 International Thermal Spray Conference Book PDF
✏Book Title : Thermal Spray 2007 Global Coating Solutions Proceedings of the 2007 International Thermal Spray Conference
✏Author : Edited by Basil R. Marple, Margaret M. Hyland, Yuk-Chiu Lau, Chang-Jiu Li, Rogerio S. Lima, Ghislain Montavon
✏Publisher : ASM International
✏Release Date :
✏Pages :
✏ISBN : 9781615031276
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Thermal Spray 2007 Global Coating Solutions Proceedings of the 2007 International Thermal Spray Conference Book Summary :

Introduction To Low Pressure Gas Dynamic Spray Book PDF
✏Book Title : Introduction to Low Pressure Gas Dynamic Spray
✏Author : Roman Gr. Maev
✏Publisher : John Wiley & Sons
✏Release Date : 2009-08-14
✏Pages : 244
✏ISBN : 9783527621910
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Introduction to Low Pressure Gas Dynamic Spray Book Summary : Written by the inventor of the Gas Dynamic Spray (GDS) technique, this first monograph on the topic brings the understanding of the GDS coating formation process to a new qualitative nanostructural level, while introducing it to industrial and technological experts so that they can develop a new generation of coatings materials. Representing the results of over ten years of research in the field, the material discussed here covers nearly every aspect of the physical principles and applications of the GDS process, including topics in applied solid state physics, materials science, nanotechnology, and materials characterization. With contributions from researchers working in various laboratories, academic institutions and industries, this book is written for those wishing to apply this novel spraying technology in industry and who are involved in the development of new specific material properties, whether engineers or experts in the automotive, aircraft, household machinery, nuclear power, materials development or other industries.

Consolidation Of Cermet Coatings By Cold Gas Dynamic Spraying Book PDF
✏Book Title : Consolidation of Cermet Coatings by Cold Gas Dynamic Spraying
✏Author : Ruben Fernandez-Urrutia
✏Publisher :
✏Release Date : 2017
✏Pages :
✏ISBN : OCLC:1118986268
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Consolidation of Cermet Coatings by Cold Gas Dynamic Spraying Book Summary : Metal-ceramic (Cermets) materials that combine properties of both: high hardness, high wear resistance, and high working temperatures of ceramics and the ductility, toughness, and heat conductance of metals. Cold gas dynamic spraying, or simply cold spray, is a solid state thermal spray process that has been in development for the last 25 years. In the cold spray process, ductile materials are accelerated in a supersonic flow. These particles impact a substrate and adhere by plastic deformation. The continuous accumulation of these particles covers the substrate and creates a dense coating. The cold spray process is beginning to become a popular method to consolidate some select cermet materials into coatings. This technique can be advantageous when an erosion and wear resistant coating is required. During the deposition of these coatings, researchers have shown that the ceramic particles have a dramatic influence on the deposition behavior by causing an increase in deposition efficiency and coating adhesion. These effects have been presented in several experiments but have yet to be thoroughly explained. The goal of this investigation is to increase the knowledge, on a fundamental level, with regards to the deposition behavior of metal-ceramic blending and cermet powders. Ultimately, the focus is to prove the feasibility of these coatings for the requirements needed in the engineering industry. The first part of the investigation is a fundamental study on the deposition behavior of metal-ceramic blends with different compositions. Three theories that aim to explain the increase in deposition efficiency were proposed in the literature and further investigated in this study. One proposed mechanism for the increase in deposition efficiency was established by probability analysis to be too unlikely to contribute to the increment in deposition efficiency. The other two proposed mechanism, the presence of asperities caused by ceramic particles, and the oxide removal produced by the impact of ceramic particles, shown to play a major role in increasing the deposition efficiency. The effect of the ceramic particle morphology on the deposition behavior of metal-ceramic blending was studied in the second part of the investigation. This study greatly complements the previous one adding more depth to the investigation and confirming results. The increment in deposition efficiency normally seen with the addition of small amounts of angular alumina was not seen when spherical alumina was added instead. The creation of asperities during deposition was explored for the two morphologies and was determined that spherical alumina does not produce the same asperities at the surface. In addition, the coating sprayed with spherical alumina showed very little ceramic retention compared with the ones sprayed with angular alumina. These results have a direct impact on the mechanical properties of the coatings. Wear resistance for coatings sprayed with spherical alumina showed no improvement compared with pure aluminum coating due to the low ceramic content. Hardness was lower in coatings sprayed with spherical alumina for the same feedstock powder composition but was harder when the final coating composition was considered. Adhesion strength significantly increases with the addition of ceramic content in the feedstock powder; this increase was greater for coating sprayed with spherical alumina. The third part of the investigation focuses on understanding the mechanism of deposition for cermet particles with various morphologies. Six commercially available CrC-NiCr powders were studied, varying in morphology and metal/ceramic ratio. Spherical powders led to the erosion of the substrate and no coating was formed. Porous agglomerated and sintered powder lead to severely cracked coatings. For dense agglomerated and sintered powders, the outcome of powder depended on the initial metal/ceramic ratio, powders with 25%wt.NiCr led to erosion while 35%wt.NiCr powders led to a dense coating. Finally blended ceramic metal powders also lead to a successful coatings. All coatings obtained had lower ceramic content than the initial feedstock powder. Interrupted deposition tests, FEA analysis, and SEM observation were used to draw conclusions on the deposition behavior and explain the results. Finally, the last part of this investigation aims to apply the knowledge learned to an applied engineering problem. The problem that is targeted is the replacement of chrome plating for the aerospace industry. A commercially available cermet powder CrC-NiCr (65/35) was proposed as a replacement of chromium plating as well as a restoration for this coating and its alternatives (electroless nickel-plating, and WC-Co-Cr HVOF). The coatings and restoration were analyzed by SEM and tested by strip rupture rest, neutral salt spray fog, and fluid immersion testing. The adhesion strength, porosity, and hardness of the cold spray coating was also tested. The deposition and restoration of coatings were successful; a hard and dense coating was obtained with good adhesion strength. The process of restoration chromium-plating and its alternatives was also developed with a clean interface was achieved in each case. Coatings and restoration passed strip to rupture rest as well as fluid immersion test in two selected industry fluids. Neutral salt spray fog test revealed that the cold spray coating and repairs may have a path that allows the solution to penetrate the substrate and start the corrosion process. This behavior was found in a few select spots and should be further investigated. Overall, the coating proved to have potential as an alternative of chromium-plating or to restore damaged hard coatings.

Numerical And Experimental Characterization Of The Cold Spray Process For Spraying Nano Particle Powders Book PDF
✏Book Title : Numerical and Experimental Characterization of the Cold Spray Process for Spraying Nano Particle Powders
✏Author : Abdulaziz Alhulaifi
✏Publisher :
✏Release Date : 2011
✏Pages : 374
✏ISBN : OCLC:756786408
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Numerical and Experimental Characterization of the Cold Spray Process for Spraying Nano Particle Powders Book Summary : The cold spray deposition process involves the acceleration of solid particles to high velocity by a carrier gas which is often supersonic, and the subsequent impingement of this high velocity, particle laden jet onto a substrate. In order for deposition to occur, i.e. in order for the solid particles to bond to the substrate, the impact velocity of the particles must be equal to or greater than some critical value. To determine an estimate of this critical velocity, the energy principle was used to predict a critical impact velocity based on material properties. It has been shown that during its interaction with the substrate, a particle should reach around 70% of its melting temperature to obtain good mechanical bonding. Using computational fluid dynamic models (CFD), a novel Aerodynamic Focusing Nozzle (AFN) using helium as the carrier gas, was developed and experimentally tested. The CFD models showed that a lighter gas such a helium must be used for the nanoparticles to reach critical velocity and penetrate the normal shockwave upstream of the substrate with sufficient inertia. A prototype AFN nozzle was fabricated using a rapid prototype machine and used to cold spray 300 nm diameter particles onto both aluminum and Kapton substrates at room temperature. Additional validation of the feasibility of the design was obtained through the deposition of a thin conductive copper layer of Kapton. This research focuses on the numerical modeling, as well as the construction and experimentation required for the development of the AFN for cold spraying nanoparticles. To characterize the results in a general way, a non-dimensionalization of all the factors involved was conducted and validated to determine the combination of cold spray process parameters required for the particle to reach the critical impact velocity and temperature.

📒Thermec 2016 ✍ C. Sommitsch

Thermec 2016 Book PDF
✏Book Title : THERMEC 2016
✏Author : C. Sommitsch
✏Publisher : Trans Tech Publications Ltd
✏Release Date : 2016-11-15
✏Pages : 2720
✏ISBN : 9783035731293
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏THERMEC 2016 Book Summary : This book presents the proceedings of the 9-th International Conference on Processing and Manufacturing of Advanced Materials – THERMEC’2016, which took place between May 29 and June 3, 2016 in Graz, Austria, under the co-sponsorship of The Minerals, Metals & Materials Society (TMS), USA. The Conference was also under the international auspices of professional organizations from Japan, Korea, France, Italy, The Netherlands, Germany, Brazil, Austria, India, and Canada. The Conference was intended to bring together the researchers and engineers/technologists working in different aspects of processing, fabrication, structure/property evaluation and applications of both ferrous and nonferrous materials including biomaterials, and smart/intelligent materials as well as the advanced characterisation techniques. In addition to the contributed papers, the conference committee included in the final program the invited presentations by active researchers from various countries in several topic areas covered at THERMEC’2016.

📒Surface Modification Technologies ✍ Antonello Astarita

Surface Modification Technologies Book PDF
✏Book Title : Surface Modification Technologies
✏Author : Antonello Astarita
✏Publisher : Trans Tech Publications Ltd
✏Release Date : 2019-07-22
✏Pages : 488
✏ISBN : 9783035735253
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Surface Modification Technologies Book Summary : The book is a collection of the papers and the keynote lectures presented at the 33rd Surface Modification Technologies Conference (SMT33) which was held in Naples on 26 to 28 June 2019. The conference was focused on surface engineering and covered the following areas: corrosion, treatments, characterization, additive manufacturing, coatings, modification technologies. This book transfers up-to-date knowledge from scientist and experts to the common practice, representing a valuable resource for engineers, designers, researchers, and students.

New Materials And Technologies In Mechanical Engineering Book PDF
✏Book Title : New Materials and Technologies in Mechanical Engineering
✏Author : Anatoly Popovich
✏Publisher : Trans Tech Publications Ltd
✏Release Date : 2019-09-24
✏Pages : 920
✏ISBN : 9783035736113
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏New Materials and Technologies in Mechanical Engineering Book Summary : International Scientific Conference "New Materials and Technologies in Mechanical Engineering" (NMTME 2019) Selected, peer reviewed papers from the International Scientific Conference "New Materials and Technologies in Mechanical Engineering" (NMTME 2019), March 12 - 15, 2019, St. Petersburg, Russian Federation

Advanced Manufacturing Technology Adme 2011 Book PDF
✏Book Title : Advanced Manufacturing Technology ADME 2011
✏Author : Jian Gao
✏Publisher : Trans Tech Publications Ltd
✏Release Date : 2011-08-16
✏Pages : 2740
✏ISBN : 9783038136347
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Advanced Manufacturing Technology ADME 2011 Book Summary : This collection of peer-reviewed papers covers the subject areas of surface engineering/coatings, modeling, analysis and simulation of manufacturing processes, materials processing technology, mechanical behavior and fracture, computer-aided materials design, tooling testing and evaluation of materials, thermal engineering theory and applications, CAM/CAE, high-speed/precision machining and inspection technology, micro-machining technology, laser processing technology, bionic mechanisms and bio-manufacturing, digital manufacture and management, and other related topics. The work thus provides a thorough and up-to-date coverage of the topics. Volume is indexed by Thomson Reuters CPCI-S (WoS).

Thermomechanical Industrial Processes Book PDF
✏Book Title : Thermomechanical Industrial Processes
✏Author : Jean-Michel Bergheau
✏Publisher : John Wiley & Sons
✏Release Date : 2014-02-19
✏Pages : 480
✏ISBN : 9781118578803
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Thermomechanical Industrial Processes Book Summary : The numerical simulation of manufacturing processes and of their mechanical consequences is of growing interest in industry. However, such simulations need the modeling of couplings between several physical phenomena such as heat transfer, material transformations and solid or fluid mechanics, as well as to be adapted to numerical methodologies. This book gathers a state of the art on how to simulate industrial processes, what data are needed and what numerical simulation can bring. Assembling processes such as welding and friction stir welding, material removal processes, elaboration processes of composite structures, sintering processes, surface-finishing techniques, and thermo-chemical treatments are investigated. This book is the work of a group of researchers who have been working together in this field for more than 12 years. It should prove useful for both those working in industry and those studying the numerical methods applied to multiphysics problems encountered in manufacturing processes.

📒Thermec 2018 ✍ R. Shabadi

Thermec 2018 Book PDF
✏Book Title : THERMEC 2018
✏Author : R. Shabadi
✏Publisher : Trans Tech Publications Ltd
✏Release Date : 2018-12-26
✏Pages : 2604
✏ISBN : 9783035732085
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏THERMEC 2018 Book Summary : This book presents the proceedings of the THERMEC’2018: 10th International Conference on Processing and Manufacturing of Advanced Materials, which took place between July 09 and July 13, 2018 in Paris, France, under the co-sponsorship of Universite de Lille, MINES ParisTech, PSL and Universite de Tours, France. The presented book will be useful for many researchers and engineers/technologists working in different aspects of processing and fabrication of materials, structure/property evaluation and applications of both ferrous and nonferrous materials including biomaterials, smart materials as well as the advanced measurement techniques in the materials science.

Solid Freeform And Additive Fabrication  Book PDF
✏Book Title : Solid Freeform and Additive Fabrication
✏Author : Duane Dimos
✏Publisher : Cambridge University Press
✏Release Date : 1999-04-27
✏Pages : 196
✏ISBN : UCSD:31822026412759
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Solid Freeform and Additive Fabrication Book Summary : Solid freeform (SFF) and additive fabrication processes are defining a revolutionary approach for materials manufacturing, leading to a capability for producing parts quicker, cheaper and with more functionality than previously thought possible. The key aspect of these direct fabrication techniques is the ability to deposit or build up material only where it is required to produce finished or nearly finished parts. While tremendous engineering progress has been made in this field, materials issues associated with layer-wise additive processes are just beginning to be addressed in a comprehensive manner. This book brings together experts in the SFF field to discuss recent developments in the processing of ceramics, metals, polymers, and composites, with a focus on the processing-structure-property relationships associated with these freeform and additive fabrication techniques. Topics include: organics, composites and laser CVD; direct metal fabrication; ceramic freeform fabrication; and ceramic freeform and layered direct fabrication.

Solid Freeform And Additive Fabrication Book PDF
✏Book Title : Solid Freeform and Additive Fabrication
✏Author :
✏Publisher :
✏Release Date : 1999
✏Pages :
✏ISBN : UOM:39015041994891
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Solid Freeform and Additive Fabrication Book Summary :

Welding Journal Book PDF
✏Book Title : Welding Journal
✏Author :
✏Publisher :
✏Release Date : 2009
✏Pages :
✏ISBN : UCSD:31822035999283
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Welding Journal Book Summary :

Cold Spray And Tribology Of Ti6al4v And Ti6al4v Tic Metal Matrix Composites Book PDF
✏Book Title : Cold Spray and Tribology of Ti6Al4V and Ti6Al4V TiC Metal Matrix Composites
✏Author : Venkata Naga Vamsi Munagala
✏Publisher :
✏Release Date : 2020
✏Pages :
✏ISBN : OCLC:1198400856
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Cold Spray and Tribology of Ti6Al4V and Ti6Al4V TiC Metal Matrix Composites Book Summary : "Ti alloys are used in aerospace and automobile applications due to their high specific strength and corrosion resistance. However, manufacturing large components through conventional techniques leads to high production and machining costs. To overcome these challenges, cold spray (CS) is seen as a feasible and economical technique to additively manufacture and repair bulk components. In CS, coating deposition occurs through supersonic impact of powder particles in solid state. The particle temperature throughout the process is well below the melting point of the material, which prevents phase transformations and oxidation. Despite good deposition efficiency, Ti6Al4V coatings when cold sprayed using nitrogen as propellant gas are often porous. The present thesis explores the influence of metal powder properties on the cold spray deposition, coating properties and tribology of Ti6Al4V coatings. Coatings were deposited using different feedstock powders and characterized to determine their porosity, microstructure, hardness and cohesion strength by performing mechanical tests and microscopic observations. For the same spray conditions, coatings deposited using irregular powders (IP) with equiaxed microstructure led to dense deposits with better cohesion strength compared to spherical powders (SP) with martensitic microstructure. Also, splats from IP bonded with higher adhesion strength and showed highly refined post sprayed microstructures compared to splats from SP. While Ti6Al4V coatings from IP exhibited dense microstructures and better mechanical properties, in terms of tribological performance, the porous coatings from SP showed lower wear rates compared to coatings from IP. This was due to entrapment of wear debris in the pores during wear process that decreased abrasive ploughing and lowered the wear rates.To improve the tribological properties of Ti6Al4V, TiC powders were co-fed to the cold spray gun and Ti6Al4V-TiC metal matrix composite (MMC) coatings were fabricated. Sliding wear tests showed that the tribology of the MMCs was significantly influenced by ceramic volume fraction, coating properties, normal load and ambient temperature. For similar ceramic volume fractions, MMCs deposited with IP showed lower wear rates compared to MMCs from SP, due to the formation of tribolayers composed of Ti oxides and fragmented TiC particles. In addition, the lubricating properties of the tribolayers due to the presence of free carbon from the TiC particles led to a significant drop in CoF. Increase in normal load and ceramic volume fraction resulted in greater exposure of ceramic particles to the sliding interface and led to the formation of a more continuous tribolayer that further decreased the wear rate and CoF. Sliding wear tests performed at different static temperatures showed that reinforcing TiC significantly improved the wear resistance of Ti6Al4V up to 200oC due to tribolayer formation. Beyond 200oC, tribo-oxidation led to the formation of oxide glaze layers that had a more profound effect in decreasing the wear and friction of both metal and composite coatings. The microscopic observations, mechanical and tribology tests helped to describe the process-structure-property-performance relationship of cold sprayed Ti6Al4V and Ti6Al4V-TiC MMCs"--

📒Thermec 2011 ✍ T. Chandra

Thermec 2011 Book PDF
✏Book Title : THERMEC 2011
✏Author : T. Chandra
✏Publisher : Trans Tech Publications Ltd
✏Release Date : 2012-01-03
✏Pages : 3226
✏ISBN : 9783038136682
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏THERMEC 2011 Book Summary : Volume is indexed by Thomson Reuters CPCI-S (WoS). These are the proceedings of the 7th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC’2011 - which was held during the 1-5 August 2011 in Quebec City, Canada. The conference brought together researchers and engineers/technologists working on various aspects of the processing, fabrication, structure/property evaluation and applications of both ferrous and non-ferrous materials; including biomaterials and smart/intelligent materials. The contents are thus and excellent and up-to-date guide to these subjects.

Advanced Surface Coating Techniques For Modern Industrial Applications Book PDF
✏Book Title : Advanced Surface Coating Techniques for Modern Industrial Applications
✏Author : Roy, Supriyo
✏Publisher : IGI Global
✏Release Date : 2020-09-18
✏Pages : 342
✏ISBN : 9781799848714
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Advanced Surface Coating Techniques for Modern Industrial Applications Book Summary : In engineering, there are often situations in which the material of the main component is unable to sustain long life or protect itself from adverse operating environments. Moreover, in some cases, different material properties such as anti-friction and wear, anti-corrosive, thermal resistive, super hydrophobic, etc. are required as per the operating conditions. If those bulk components are made of such materials and possess those properties, the cost will be very high. In such cases, a practical solution is surface coating, which serves as a protective barrier to the bulk material from the adverse environment. In the last decade, with enormous effort, researchers and scientists have developed suitable materials to overcome those unfavorable operating conditions, and they have used advanced deposition techniques to enhance the adhesion and surface texturing of the coatings. Advanced Surface Coating Techniques for Modern Industrial Applications is a highly sought reference source that compiles the recent research trends in these new and emerging surface coating materials, deposition techniques, properties of coated materials, and their applications in various engineering and industrial fields. The book particularly focuses on 1) coating materials including anti-corrosive materials and nanomaterials, 2) coating methods including thermal spray and electroless disposition, and 3) applications such as surface engineering and thin film application. The book is ideal for engineers, scientists, researchers, academicians, and students working in fields like material science, mechanical engineering, tribology, chemical and corrosion science, bio-medical engineering, biomaterials, and aerospace engineering.

Titanium Powder Metallurgy Book PDF
✏Book Title : Titanium Powder Metallurgy
✏Author : Ma Qian
✏Publisher : Butterworth-Heinemann
✏Release Date : 2015-02-10
✏Pages : 648
✏ISBN : 9780128009109
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Titanium Powder Metallurgy Book Summary : Titanium Powder Metallurgy contains the most comprehensive and authoritative information for, and understanding of, all key issues of titanium powder metallurgy (Ti PM). It summarizes the past, reviews the present and discusses the future of the science and technology of Ti PM while providing the world titanium community with a unique and comprehensive book covering all important aspects of titanium powder metallurgy, including powder production, powder processing, green shape formation, consolidation, property evaluation, current industrial applications and future developments. It documents the fundamental understanding and technological developments achieved since 1937 and demonstrates why powder metallurgy now offers a cost-effective approach to the near net or net shape fabrication of titanium, titanium alloys and titanium metal matrix composites for a wide variety of industrial applications. Provides a comprehensive and in-depth treatment of the science, technology and industrial practice of titanium powder metallurgy Each chapter is delivered by the most knowledgeable expert on the topic, half from industry and half from academia, including several pioneers in the field, representing our current knowledge base of Ti PM. Includes a critical review of the current key fundamental and technical issues of Ti PM. Fills a critical knowledge gap in powder metal science and engineering and in the manufacture of titanium metal and alloys

Cold Spray Characteristics Of Mixed 316l Stainless Steel And Commercial Purity Fe Powders Book PDF
✏Book Title : Cold Spray Characteristics of Mixed 316L Stainless Steel and Commercial Purity Fe Powders
✏Author : Xin Chu
✏Publisher :
✏Release Date : 2020
✏Pages :
✏ISBN : OCLC:1198401373
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Cold Spray Characteristics of Mixed 316L Stainless Steel and Commercial Purity Fe Powders Book Summary : "Some of the current trends in cold spray include the production of metal-metal composite coatings. Among the various strategies to prepare the composite feedstock, e.g. agglomerate-sintering, mechanically milling and coated/cladded feedstock, mixing metal powders (either by premixing or using dual feeder) is a straightforward method and is convenient to vary the mixture composition. However, it has been found to be difficult to predict the cold spray characteristics of mixed powders (e.g. deposition efficiency (DE), porosity and compositional yield) from those of the single component powders, which means that any new mixtures need to undergo extensive preliminary cold spray trials in order to optimize the process parameters. Thus, fundamentally, analyzing the cold spray characteristics of two metal powders will lead to accurate modeling of the process and minimize the cold spray trials required to optimize the process. This thesis aims to develop a better understanding of the effects of mixing powders on the cold spray characteristics of 316L/Fe mixed powders. Single component 316L and Fe powders were deposited by cold spray, as well as the mixed 316L/Fe powders with a dual feeder setup. The as-sprayed coatings were also polished and single 316L and Fe particles were deposited on the as-polished coatings to form splats. To understand the splat deposition behavior of different impact scenarios (i.e. 316L on 316L, 316L on Fe, Fe on 316L, Fe on Fe), metrics of splat deformation, substrate deformation, splat adhesion strength/energy, and splat rebound were characterized. With a better understanding of the splat deposition behavior, efforts were made to explain the cold spray characteristics of bimodal size 316L/Fe powder mixtures. Since the finding suggests that the feedstock particle size could also be influential of the mixed powders deposition characteristics, different size combinations of 316L/Fe mixtures were deposited and studied. Results show that the splat deposition behavior onto as-polished coatings is indicative of the feedstock deposition behavior during composite coating formation. In particular, the 316L on Fe impact scenario generates strong rebound/poor deposition; whereas the reverse scenario Fe on 316L leads to excellent deposition. The distinct deposition behaviors of different impact sequences between 316L and Fe were explained through the relative particle/substrate hardness, surface oxide thickness, and particle morphology. Besides, results also show the cold spray characteristics of bimodal size 316L/Fe mixtures exhibit unexpected variations with increasing feedstock Fe fractions, which reveals the contributions of various mechanisms during mixed powders deposition: mixed 316L/Fe impact interfaces, particle size difference, and tamping. Finally, the DEs of different sizes of 316L/Fe mixtures show different variations with increasing feedstock 316L fractions, which is due to particle-particle interactions (i.e. tamping and retention) only occur in small size feedstocks during cold spray"--

Functionalized Coatings By Cold Spray For Joint Prosthesis Book PDF
✏Book Title : Functionalized Coatings by Cold Spray for Joint Prosthesis
✏Author : Anna Martín Vilardell
✏Publisher :
✏Release Date : 2017
✏Pages : 305
✏ISBN : OCLC:986678569
✏Available Language : English, Spanish, And French

Click Here To Get Book

✏Functionalized Coatings by Cold Spray for Joint Prosthesis Book Summary : The Cold Spray (CS) is a novelty technique for the production of coatings within the field of Thermal Spray. The use of low work temperatures (under the melting point of the material) is what makes it different from the other conventional spraying techniques. CS is an ideal technique to spray materials that are sensitive to temperature, such as nanostructured and amorphous materials, or sensitive to the oxygen, as could be titanium. These characteristics may be specially promising within the field of biomedical coatings. Compared to the conventional processes, it would allow to produce coatings in a more cost-effect and environmental friendly way. The research is mostly focused on the obtaining of highly rough Commercial Pure Titanium (CP-Ti) and Calcium Phosphate (CP) coatings by CS for joint prosthesis application. An exhaustive development of coating parameter optimization has been developed and the different deposition mechanisms for each feedstock powder were analyzed as well. The mechanical and biological properties of the optimal coatings were evaluated consequently. The mechanical testing (e.g. Tensile and shear strength test and Taber test), was performed on the optimized CP-Ti coating overcoming the ASTM standard specifications for joint, shoulder and knee prosthesis; CP-Ti coating showed good bonding between particles as well with the substrate. The used of coarse titanium particles provided high roughness (Ra=40±12 æm and Rz=235±44 æm) that shows an increase in cell viability, proliferation and differentiation as well as mineralization, in comparison with a low-roughness titanium surface obtained by Sand Blasted (SB). Afterwards, additional surface modification procedures were investigated to obtain nanotextured surfaces on the as-sprayed CS titanium coatings to evaluate their in-vitro response for comparison. The anodic oxidation treatment leads to a TiO2 Nanotube (NT) layer with a pore diameter between 50-100 nm and a roughness of Ra=36.8±4.6 nm, whereas the alkaline treatment leads to a nanosurface of Ra=1.2±0.2nm, composed by very fine porosity 100nm. The nanotextured treatments lead to an increase of cell viability in comparison with the as-sprayed CP-Ti coating as well as high cell differentiation due to its nanofeatures. On the other hand, Hydroxyapatite (HA) coatings were well-deposited by CS without amorphization. Two different HA powders were used as feedstock, a sintered HA powder with a crystalline microstructure, and agglomerate HA feedstock powder with a nanocrystalline microstructure. Both powders show different deposition by CS according to their microstructure; particle deposition of sintered HA powder occurred by slight void collapse and dynamic fragmentation followed by cracking and crushing and reduction in crystal size by plastic deformation mechanisms, whereas agglomerate HA powder a consolidation between particles is caused by the tamping effect produced by the continuous impact of incoming particles onto the already adhered ones, leading to coating build up. Although sintered HA coatings show high cell differentiation, agglomerated HA coatings result in higher cell viability and proliferation, as well as a more homogeneous cell deposition along the coating; agglomerate HA coatings were compared to HA coatings obtained by conventional techniques (e.g. Plasma Spray), and an increase of cell viability and proliferation were observed according to the crystalline HA percentage (CSPS). To sum up, CS has shown to be suitable to produce metallic and ceramic coatings for joint applications, especially those dealing with materials that are sensitive to the temperature and oxygen. The non-microstructural changes from the feedstock powder to the coatings leads to a big advantage in CS to obtain customized coatings.