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A Review of the Cold Gas Dynamic Spraying Process

A Review of the Cold Gas Dynamic Spraying Process
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Author(s): Sudesna Roy (School of Mechanical Engineering, KIIT University, India) and Subhrasmita Tripathy (KIIT University, India)
Copyright: 2021
Pages: 15
Source title: Advanced Surface Coating Techniques for Modern Industrial Applications
Source Author(s)/Editor(s): Supriyo Roy (Haldia Institute of Technology, India) and Goutam Kumar Bose (Haldia Institute of Technology, India)
DOI: 10.4018/978-1-7998-4870-7.ch006


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In this modern era, use of coatings on engineering materials has become highly inevitable. One such emerging coating method is the cold gas dynamic spraying. It is a solid-state process where deposition on to the surface of the material is done at high pressure and velocity. Adhesion of the powder to the substrate is possible because of the high amount of plastic deformation. This chapter introduces the CGDS system and discusses the types of set-ups and its modifications that are generally used. Further, the chapter delves into the process parameters in the spraying process and the correlation of these parameters with the coating properties. It also provides a comprehensive review of the current theories of bonding mechanism in cold spray. It aims to provide an overview of the material systems that have been investigated so far for cold spraying with an outline of the experimental and numerical simulation that have been researched.

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