Wear Protection of Engine Parts at High Temperatures by a Co+Cr2O3 Dispersion Coating 850704
Co+Cr2O3 is a composite coating of a cobalt matrix with 30 percent by volume embedded Cr2O3. The coating can be applied by plating using a suspension of Cr2O3 in a cobalt electrolyte. The mechanical properties of this coating are discussed. The main attribute is the excellent wear resistance of the coating especially in the temperature range of 300 to 700°C. Adhesive wear of unplated counterparts is reduced by the same amount. In contrast to nickel the fatigue strength of Co+Cr2O3 coated Waspaloy was shown to be not influenced, when heat treated at 400°C for 16 hours. Plated engine parts demonstrate the usefulness of the Co+Cr2O3 composite coatings for wear protection.
Citation: Thoma, M., "Wear Protection of Engine Parts at High Temperatures by a Co+Cr2O3 Dispersion Coating," SAE Technical Paper 850704, 1985, https://doi.org/10.4271/850704. Download Citation
Author(s):
M. Thoma
Pages: 8
Event:
Annual Aerospace/Airline Plating and Metal Finishing Forum and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1985 Transactions-V94-85
Related Topics:
Heat treatment
Coatings, colorants, and finishes
Electrolytes
Composite materials
Adhesives and sealants
Wear
Plating
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