The paper analyzed microstructure and property of WC-17Co coatings sprayed by High Velocity Oxygen/Air Fuel Spray under three kinds of spray conditions, which are HVOF, HVO-AF and HVAF. Coatings bond well with the substrate. The average bonding strength exceeds 70Mpa. Coatings are dense and hard, and the average porosity is about 1%. Microhardness of coatings is between HV10000.2 and HV12000.2. Coatings are mainly composed of WC with little W2C and Co3W3C. With the increasing of Nitrogen, decarburization of WC was reduced.

bond strength, high-velocity oxyfuel spray coating, microhardness, microstructure, porosity, tungsten carbide-cobalt coatings
This content is only available as a PDF.
Copyright © 2003 ASM International. All rights reserved.
2003
ASM International
Topics
Microstructure High-velocity oxyfuel spray coating Bonding strength Microhardness Porosity Tungsten carbide cermets
Issue Section:
HVOF
You do not currently have access to this content.