Rolls-royce Corporation

Other

Kenneth W Wright

John T Pinder

William B Litchfield

Carl Hodgkinson

Mike C Taylor

Stephen P Fox

James E Melville

Derek Perry

Donald F Neal

Philip S Wood

Michael W Kearns

Stephen C Clark

Mounting arrangement for a gas turbine engine

An abradable seal coating for application to one of a pair of members having relative rotational movement and its method of manufacture are described. The abradable seal coating comprises a two phase composition consisting of a first phase of a metallic alloy matrix of approximately 88% aluminium - 12% silicon, and a second phase of an organic dispersoid material. The first and second phases are codeposited onto a substrate in the ratio 80:20 respectively. The two phases are modified after codisposition onto the substrate by heat treating at a temperature of 450.degree. C. for about sixteen hours. The heat treated coating can be used at elevated temperatures and has improved abradability whilst maintaining its integrity.

Abradable seal coating and method of making the same

A rotating or moving metal component such as a blade for a gas turbine engine is made from a composite bar of titanium alloy with the sides of the bar having a surface layer of e.g. nickel which is less likely to ignite in particle form or by frictional heating when present in oxygen or air. After the surface layer has been bonded to the titanium alloy it is then parted to provide sections which extend perpendicularly to the plane of the surface layers. Each parted section may then be machined into a blade with the nickel portion forming the tip of the blade. Alternatively, each parted section may itself form the blade tip by attachment on its titanium alloy side to a blade stem.

Rotating or moving metal components and methods of manufacturing such

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Derby, United Kingdom

Kenneth W Wright