April 17, 2021

Download Ebook Free Cold Spray Technology

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

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.

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

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.

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

Powder Consolidation Using Cold Spray

Powder Consolidation Using Cold Spray
Author : Atieh Moridi
Publisher : Springer
Release Date : 2016-11-10
Category : Technology & Engineering
Total pages :127
GET BOOK

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.

Particle Injection Simulation on Cold Spray Technology

Particle Injection Simulation on Cold Spray Technology
Author : Christopher A. Santini
Publisher : Unknown
Release Date : 2020
Category : Coating processes
Total pages :144
GET BOOK

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.

High Pressure Cold Spray

High Pressure Cold Spray
Author : C. M. Kay,J. Karthikeyan
Publisher : Unknown
Release Date : 2016-06
Category : Coating processes
Total pages :324
GET BOOK

This book is a highly practical and useful ""go-to"" resource that presents an in-depth look at the high pressure cold spray process and describes applications in various industries. Cold spray continues to be the fastest developing spray technology over the last decade, and a significant number of scientists, engineers, and technologists are joining the cold spray community around the globe. The technology is relatively young and work is being simultaneously pursued in universities, research centers, and in many high tech industries. As this novel technology spreads quickly into many new application areas, there is a large need for an authoritative source of information. This new book addresses this need and will be indispensable to universities, libraries, and those involved in thermal spray. It presents baseline information on design and modeling, materials science of engineered coatings, and specific applications in various high tech industries, and is also a hands-on resource for cold spray operators.

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

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 : 2021
Category :
Total pages :129
GET BOOK

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.

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

Numerical and Experimental Characterization of the Cold Spray Process for Spraying Nano Particle Powders

Numerical and Experimental Characterization of the Cold Spray Process for Spraying Nano Particle Powders
Author : Abdulaziz Alhulaifi
Publisher : Unknown
Release Date : 2011
Category :
Total pages :374
GET BOOK

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.

Practical Cold Spray

Practical Cold Spray
Author : Victor Kenneth Champagne, Jr.,Ozan Cagatay Ozdemir,Aaron Nardi
Publisher : Springer
Release Date : 2021-05-08
Category : Technology & Engineering
Total pages :340
GET BOOK

This book provides a detailed explanation of the cold spray process from a practical standpoint. Drawing on the authors’ 36 years of research and development experience, it is firmly rooted in theory but also substantiated by empirical data and practical knowledge, offering potential users the information they need to recognize the advantages, as well as the limitations, of cold spray. This sets it apart from previous works on the subject, which have been purely academic. Cold spray technology has made great dramatic strides over the last 10 years and is now being used extensively in the aerospace, electronics, automotive, medical, and even the petrochemical industries. Most recently, cold spray of near-net shaped parts was accomplished – something previously assumed to be impossible because of the limitations of commercially available cold spray systems and a lack of fundamental understanding regarding the process. The cost of cold spray has also declined, making it appealing to industry through the introduction of new powders, surface preparation techniques, and recovery systems tailored to the cold spray process. Though primarily intended for users of the technology, this handbook is also a valuable resource for researchers interested in advances in cold spray materials, improved feedstock powders, advanced hardware and software development, surface preparation techniques, and the numerous applications developed to date. For example, cold spray aluminum alloys have been developed that offer the strength and ductility of wrought material in the as-sprayed condition. This has yet to be achieved by conventional powder consolidation methods including laser sintering, electron beam, and ultrasonic techniques. Other topics covered include additive manufacturing, structural repair, nondestructive evaluation, advanced cold spray materials, qualification requirements, cold spray systems comparison, and, finally, helium recovery. Thanks to its practical focus, the book provides readers with everything they need to understand, evaluate, and implement cold spray technology.