T&n Technology Limited

Ae Plc

Alan D Pope

David Raymond Eastham

Charan Preet Johal

David Robert Adams

Johnathan D Philby

David F Spence

Bearings are described having composite overlay coatings. The composite overlay coating comprises an electro co-deposited soft metallic matrix having incorporated therein from 0.05 to 2 wt % of a hard metal oxide, said material exhibiting a Vickers hardness (Hv) of from at least 300 to in excess of 600.

Bearings

Bearings having an overlay coating containing dispersed phase of a

A method for the etching of chromium-coated piston rings comprises the steps of producing relative movement and rubbing contact between the chromium-coated surface of a piston ring which is anodic and a cathode having a porous material on the rubbing surface thereof, supplying an electrolyte to the porous material between the anodic ring surface and the cathode, establishing an electrical potential therebetween and supplying an electrical current for a period of time during the relative movement.

Method for etching piston rings

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Rugby, United Kingdom

Alan D Pope