The Development of a Wear Resistant Electrodeposited Composite Coating for Use on Aero Engines

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Abstract
A number of electrodeposited composite coatings have been produced and their suitability as wear control coatings for aero engine parts has been assessed. Of the various metal/ceramic combinations examined, a coating composed of a cobalt matrix with chromium carbide inclusions was found to meet the required specification. Two methods of producing the cobalt/chromium carbide composite on a production scale have been developed and these are described. The major aspects connected with the application of plated coatings to to aero engine parts have been investigated for this material combination and each requirement has been met. Comparative wear test data for the electrodeposited composite coatings are included, both against themselves and against other materials.