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Open AccessArticle

Porosity Characterization of Cold Sprayed Stainless Steel Coating Using Three-Dimensional X-ray Microtomography

1
College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
2
MATEIS CNRS UMR 5510, INSA de Lyon, Université de Lyon, Villeurbanne 69621, France
*
Author to whom correspondence should be addressed.
Coatings 2018, 8(9), 326; https://doi.org/10.3390/coatings8090326
Received: 24 July 2018 / Revised: 27 August 2018 / Accepted: 15 September 2018 / Published: 17 September 2018
Cold gas-dynamic spray (cold spray) is an evolving coating deposition and restoration technology in which particles are deposited above the sonic speed. This paper presents the non-destructive three-dimensional characterization of cold sprayed stainless steel coating. The visualization of coating morphology and volumetric porosity and the analyses of porosity size and spatial distributions confirmed that dense stainless steel coating with non-connected, micron-sized gradient porosity can be successfully produced by cold spray. The suitability of X-ray tomography for characterizing cold sprayed coatings was also assessed. View Full-Text
Keywords: X-ray tomography; cold spray; porosity; stainless steel; three-dimensional imaging X-ray tomography; cold spray; porosity; stainless steel; three-dimensional imaging
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MDPI and ACS Style

Wang, Y.; Adrien, J.; Normand, B. Porosity Characterization of Cold Sprayed Stainless Steel Coating Using Three-Dimensional X-ray Microtomography. Coatings 2018, 8, 326.

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