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Abstract
Cold spray deposition is an emerging technology that addresses many classic shortcomings of more traditional thermal spray processes. Efforts are under way as of this writing to develop a more comprehensive scientific basis for the cold spray process as well as a wider range of suitable materials and its applications for corrosion protection. This paper presents a tutorial introduction to the cold spray coating process, highlighting the coating formation mechanisms, its characteristics and applications. It includes the comparison of cold spray technique with some popular thermal spray techniques. A thorough survey on the combinations of coatings deposited on diverse substrates with their features has also been detailed with emphasis on its applications for oxidation/corrosion protection.
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Acknowledgements
We acknowledge the research grant from Council of Scientific and Industrial Research, New Delhi [file no. 22(0441)/07/EMR-II, dated October 23, 2007] for carrying out the R&D work on ‘Investigations on the role of cold spray coatings to control hot corrosion of steam generating plants’. We express our sincere thanks to ASB Industries, Inc. (Barbeton, OH, USA) and Guru Gobind Singh Super Thermal Power Plant (Ropar, India) for their kind cooperation during this work.
Notes
This paper is part of a special issue on cold spray technology