United Technologies Corporation

Harold W Pettit, Jr

Frederick Clell Walden

Gerard A Sileo

William J Woodard

Timothy A Twigg

Charles G Davis

A composite ceramic coating having abrasive properties for application to a metallic substrate is provided which includes a ceramic matrix and a plurality of ceramic abrasive particles disposed within said ceramic matrix. The abrasive particles have a shear strength substantially greater than that of the ceramic matrix and possess an angular geometry. A method for providing an abrasive coating on a metallic article is also provided.

Abrasive/abradable gas path seal system

Method for providing an abrasive coating on a metallic article

An apparatus and method are described for simultaneously thermal spraying at least two types of powders onto a substrate, wherein both powder types are carried by a single spray stream and impacted upon the substrate. According to the invention, the different powder types are injected into the spray stream through separate powder ports in such a manner that there is substantially no mixing of the powder types in the spray stream. The spray system and substrate being sprayed are moved relative to each other to produce a homogeneous sprayed powder deposit.

Multiple port plasma spray apparatus and method for providing sprayed

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West Palm Beach, FL, United States of America

Harold W Pettit, Jr