This study evaluates an internal diameter HVAF spray system and compares coatings characteristics obtained with WC and Cr3C2 based powders with those achieved via standard HVAF spraying. Coating microstructure, phase composition, hardness, roughness, and corrosion resistance are investigated and the potential for further optimization is discussed. It is also shown that the new system can be used for grit-blasting as well as spraying.

corrosion resistance, Cr3C2-NiCr coatings, high-velocity airfuel spraying, inner diameter spraying, microhardness, microstructure, WC-CoCr coatings
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Copyright © 2014 DVS Media GmbH. All rights reserved.
2014
DVS Media GmbH
Topics
Microstructure Vickers hardness testing Thermal spray coating Surface roughness Chromium carbide cermets Tungsten carbide cermets
Issue Section:
Poster Session: High Velocity Oxy- and Air-Fuel Spraying Processes
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