November 25, 2020

Download Ebook Free The Cold Spray Materials Deposition Process

The Cold Spray Materials Deposition Process

The Cold Spray Materials Deposition Process
Author : Anonim
Publisher : Elsevier
Release Date : 2007-09-21
Category : Technology & Engineering
Total pages :376
GET BOOK

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

The Cold Spray Materials Deposition Process

The Cold Spray Materials Deposition Process
Author : Victor K. Champagne
Publisher : Woodhead Pub Limited
Release Date : 2007
Category : Technology & Engineering
Total pages :362
GET BOOK

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

The Cold Spray Materials Deposition Process

The Cold Spray Materials Deposition Process
Author : Victor K. Champagne:
Publisher : CRC Press
Release Date : 2007-10-09
Category : Technology & Engineering
Total pages :362
GET BOOK

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 2 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.

Cold Spray Technology

Cold Spray Technology
Author : Anatolii Papyrin,Vladimir Kosarev,Sergey Klinkov,Anatolii Alkhimov,Vasily M. Fomin
Publisher : Elsevier
Release Date : 2006-10-04
Category : Science
Total pages :336
GET BOOK

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

Simulation of Cold Spray Particle Deposition Process

Simulation of Cold Spray Particle Deposition Process
Author : Jing Xie
Publisher : Unknown
Release Date : 2014
Category :
Total pages :180
GET BOOK

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.

Modern Cold Spray

Modern Cold Spray
Author : Julio Villafuerte
Publisher : Springer
Release Date : 2015-08-24
Category : Technology & Engineering
Total pages :429
GET BOOK

This book focuses on the current state of the art of the novel cold spray process. Cold spray is a solid state metal consolidation process, which allows engineers to tailor surface and shape properties by optimizing process parameters, powder characteristics and substrate conditions for a wide variety of applications that are difficult or impossible by other techniques. Readers will benefit from this book's coverage of the commercial evolution of cold spray since the 1980's and will gain a practical understanding of what the technology has to offer.

Cold Spray in the Realm of Additive Manufacturing

Cold Spray in the Realm of Additive Manufacturing
Author : Sunil Pathak,Gobinda C. Saha
Publisher : Springer Nature
Release Date : 2020-05-12
Category : Technology & Engineering
Total pages :245
GET BOOK

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.

Cold-Spray Coatings

Cold-Spray Coatings
Author : Pasquale Cavaliere
Publisher : Springer
Release Date : 2017-11-08
Category : Technology & Engineering
Total pages :570
GET BOOK

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.

Particle Velocity and Deposition Efficiency in the Cold Spray Process

Particle Velocity and Deposition Efficiency in the Cold Spray Process
Author : Anonim
Publisher : Unknown
Release Date : 1998
Category :
Total pages :129
GET BOOK

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 Gas Dynamic Spray

Cold Gas Dynamic Spray
Author : Roman Gr. Maev,Volf Leshchynsky
Publisher : CRC Press
Release Date : 2016-04-27
Category : Technology & Engineering
Total pages :334
GET BOOK

Your Guide to Advanced Cold Spray Technology Cold Gas Dynamic Spray centers on cold gas dynamic spray (or cold spray—CS) technology, one of the most versatile thermal spray coating methods in materials engineering, and effectively describes and analyzes the main trends and developments behind the spray (coating) techniques. The book combines theory with practice to enable the reader to deeper understand the CS coatings as well as their structures and properties, and describes the state of the art in CS technology with an emphasis on all major components of the cold spray process. This book begins with an introduction to CS spray and goes on to thoroughly explain the process. It describes the different powder synthesis methods and equipment currently used, and defines the CS coating microstructure, characterization methods, and properties of CS coatings. The authors present a comprehensive approach that highlights grit blasting and cold spraying as well as the hybrid CS-sintering technology that offers integrity of microstructure, compositional homogeneity, and mechanical property levels equal to (and frequently better than) those of the wrought counterpart. The book largely covers the basic principles of CS technology and also includes: A brief survey of thermal spray methods The basic principles of plasticity theory A description of the CS equipment, the nozzle design, and the geometry of a CS gun Coverage of the microstructural and mechanical properties of CS metals and alloys A detailed analysis of aircraft component repair using GS An overview of the economic aspects of CS applications. Cold Gas Dynamic Spray explains how cold gas dynamic spray works and what it can do, and is intended for engineering professionals working with sprays and coatings in the industry as well as graduate student specializing in material science, mechanical, automotive, aerospace, and chemical engineering.

Handbook of Thermal Spray Technology

Handbook of Thermal Spray Technology
Author : Joseph R. Davis
Publisher : ASM International
Release Date : 2004-01-01
Category : Reference
Total pages :338
GET BOOK

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

Nanostructured Coatings

Nanostructured Coatings
Author : Albano Cavaleiro,Jeff T. de Hosson
Publisher : Springer Science & Business Media
Release Date : 2007-02-19
Category : Technology & Engineering
Total pages :648
GET BOOK

This book delivers practical insight into a broad range of fields related to hard coatings, from their deposition and characterization up to the hardening and deformation mechanisms allowing the interpretation of results. The text examines relationships between structure/microstructure and mechanical properties from fundamental concepts, through types of coatings, to characterization techniques. The authors explore the search for coatings that can satisfy the criteria for successful implementation in real mechanical applications.

Metal Sprays and Spray Deposition

Metal Sprays and Spray Deposition
Author : Hani Henein,Volker Uhlenwinkel,Udo Fritsching
Publisher : Springer
Release Date : 2017-07-22
Category : Technology & Engineering
Total pages :567
GET BOOK

This book describes and illustrates metal spray and spray deposition from the process engineering, metallurgical, and application viewpoints. The authors include step-by-step fundamental information for the metal spray process and detail current engineering developments and applications. They offer industry insight on non-equilibrium solidification processes for yielding stable metal structures and properties.

The Science and Engineering of Thermal Spray Coatings

The Science and Engineering of Thermal Spray Coatings
Author : Lech Pawlowski
Publisher : John Wiley & Sons
Release Date : 2008-04-30
Category : Science
Total pages :656
GET BOOK

This extensively updated and revised version builds on the success of the first edition featuring new discoveries in powder technology, spraying techniques, new coatings applications and testing techniques for coatings -- Many new spray techniques are considered that did not exist when the first edition was published! The book begins with coverage of materials used, pre-spray treatment, and the techniques used. It then leads into the physics and chemistry of spraying and discusses coatings build-up. Characterization methods and the properties of the applied coatings are presented, and the book concludes with a lengthy chapters on thermal spray applications covers such areas as the aeronautics and space, automobiles, ceramics, chemicals, civil engineering, decorative coatings, electronics, energy generation and transport, iron and steel, medicine, mining and the nuclear industries.

Advanced Nanomaterials and Coatings by Thermal Spray

Advanced Nanomaterials and Coatings by Thermal Spray
Author : Guan-Jun Yang,Xinkun Suo
Publisher : Elsevier
Release Date : 2019-04-15
Category : Technology & Engineering
Total pages :524
GET BOOK

Advanced Nanomaterials and Coatings by Thermal Spray focuses on the design, preparation, characterization and application of advanced coating materials for promising industries via thermal spray. Chapters introduce the potential applications of advanced nanocoating materials, the unique characteristics of thermal sprayed nanocoating, the design and processing of nanopowders, and discuss various nanocoating materials and their microstructure/properties. In addition, nanomaterials with unique characteristics are presented, i.e., the dendrite or feather-like nanomaterials by suspension spray or plasma spray-physical vapor deposition hybrid technology. This book will serve as an excellent resource for both researchers and individuals in industry. Provides a comprehensive overview of the field of advanced nanocoatings materials and the use of thermal spray methods Discusses the connections between the design, preparation, characteristics and applications of thermal spray nanocoatings Reviews the properties and potential application of nanocoating materials, providing professionals with a guide on which nanocoatings have potential for their detailed requirements and development choices