The objective of this study is to assess the wear resistance, hardness, and porosity of HVOF-sprayed Cr3C2-25NiCr coatings applied using different oxygen and C3H8 flow rates. In the experiments, six coating samples were prepared and subjected to various tests. The sample deposited with the highest oxygen flow rate and lowest fuel-oxygen ratio exhibited the lowest porosity and highest microhardness. In general, the higher the surface hardness, the better the erosion and cavitation wear resistance. The most intense wear occurred during the erosion test conducted with an impingement angle of 60°.

chromium carbide-nickel-chromium coating, flow rate, high-velocity oxyfuel spraying, microhardness, porosity, wear resistance
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2019
ASM International
Topics
High-velocity oxyfuel spray coating Wear resistance Microhardness Flow rate Porosity Chromium carbide cermets
Issue Section:
Poster Session
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