This paper examines the potential of thermal spray coatings for manufacturing and repairing twin-screw rotors. The coatings evaluated were produced by atmospheric plasma spraying (APS). Tests show that 7% yttria stabilized zirconia (ZrO27Y2O3) coatings provide sufficient run-in characteristics and corrosion resistance. The coatings, along with a NiCrAl bond coat, were applied to various substrate materials.

atmospheric plasma spraying, corrosion resistance, NiCrAl bondcoats, run-in coatings, screw compressors, YSZ topcoats
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Copyright © 2000 ASM International. All rights reserved.
2000
ASM International
Topics
Compressors Nickel-chromium alloys Yttria-stabilized zirconia Plasma spray coating
Issue Section:
Applications
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