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Open AccessFeature PaperReview

Post-Process Treatments on Supersonic Cold Sprayed Coatings: A Review

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[email protected] Corporate Lab, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, The University of Dublin, Parsons Building, Dublin 2, Ireland
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State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi’an 710072, China
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Central Technology Group, Rolls-Royce Singapore Pte. Ltd., Singapore 797565, Singapore
*
Authors to whom correspondence should be addressed.
Coatings 2020, 10(2), 123; https://doi.org/10.3390/coatings10020123
Received: 6 January 2020 / Revised: 19 January 2020 / Accepted: 22 January 2020 / Published: 1 February 2020
Cold Gas Dynamic Spray or Supersonic Cold Spray, or simply ‘Cold Spray’, is an emerging technology for rapidly building thin films, thick coatings and large-scale additive manufacturing at relatively low temperatures. In a cold spray process, particles are accelerated to supersonic speeds by a propellant gas and impact a substrate, thus producing a strong bonding with the substrate and subsequently forming a deposit via layer-by-layer buildup. The scalability and low cost of this method make it promising for many applications in industry, such as metal component surface repair/enhancement/restoration and functional coatings for electrical, thermal, biomedical, energy storage, and nuclear plant applications. However, cold sprayed deposits usually require post process treatments to further modify their microstructures and mechanical properties in order to obtain the desired performances. A number of studies have been carried out on this topic. Here, recent progress in different post process treatments on cold sprayed deposits is reviewed, including heat treatment, friction-stir processing, shot peening, and laser re-melting. The effects of these post treatments on the microstructure, residual stress and mechanical properties of cold sprayed deposits are discussed. View Full-Text
Keywords: cold spray; metallic deposit; post-process treatment; microstructure; mechanical characteristics cold spray; metallic deposit; post-process treatment; microstructure; mechanical characteristics
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MDPI and ACS Style

Sun, W.; Tan, A.W.-Y.; Wu, K.; Yin, S.; Yang, X.; Marinescu, I.; Liu, E. Post-Process Treatments on Supersonic Cold Sprayed Coatings: A Review. Coatings 2020, 10, 123. https://doi.org/10.3390/coatings10020123

AMA Style

Sun W, Tan AW-Y, Wu K, Yin S, Yang X, Marinescu I, Liu E. Post-Process Treatments on Supersonic Cold Sprayed Coatings: A Review. Coatings. 2020; 10(2):123. https://doi.org/10.3390/coatings10020123

Chicago/Turabian Style

Sun, Wen; Tan, Adrian W.-Y.; Wu, Kaiqiang; Yin, Shuo; Yang, Xiawei; Marinescu, Iulian; Liu, Erjia. 2020. "Post-Process Treatments on Supersonic Cold Sprayed Coatings: A Review" Coatings 10, no. 2: 123. https://doi.org/10.3390/coatings10020123

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