In this study, WC-CoCr coatings are deposited on grit-blasted steel substrates by high-velocity airfuel (HVAF) spraying. A cross-sectional image of the feedstock powder shows that the WC grains are evenly distributed in the Co-Cr matrix. As-sprayed coating cross-sections are examined under different levels of magnification, coating hardness is measured, and coating and powder phases are analyzed by XRD. In addition, the corrosion behavior of coated and uncoated substrates is analyzed and compared with a reference hard chrome coating.

cemented carbide coatings, coating hardness, corrosion testing, hard-chrome coating, high-velocity airfuel spraying, WC-CoCr coatings
This content is only available as a PDF.
Copyright © 2013 ASM International. All rights reserved.
2013
ASM International
Topics
Hard chromium plating Cobalt-chromium alloys High-velocity oxyfuel spray coating Hardness Electrochemical corrosion testing WC-Co cemented carbides
Issue Section:
Research and Development
You do not currently have access to this content.