In this study, the deposition, microstructure, and resistivity of APS and HVOF sprayed Cr2O3-TiO2 coatings is systematically investigated. Commercially available Cr2O3-rich feedstock powders are used along with five agglomerated and sintered experimental powders on the TiO2-rich side. Both processes are found to produce homogeneous, low-porosity coatings with phase compositions that can be changed by adjusting process parameters. Coating hardness and electrical resistivity are found to depend heavily on Cr2O3 content.

atmospheric plasma spraying, chromium oxide-titanium dioxide coating, electrical resistivity, hardness, high-velocity oxyfuel spraying, phase diagrams
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Copyright © 2009 ASM International. All rights reserved.
2009
ASM International
Topics
Oxide-based ceramics High-velocity oxyfuel spray coating Plasma spray coating Electrical resistivity Hardness Phase diagrams
Issue Section:
Ceramics, TBCs, SOFCs, and EBCs
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