Heat engine parts made of alloy and having a metallic-ceramic protective coating and method of forming said coating

US5057379A · kind A · utility

Assignees

• Societe Nationale d'Etude et de Construction de Moteurs d'Aviation - S.N.E.C.M.A · FR
• Association Pour La Recherche Developpement Des Methodes Et Processus Industriels · FR

Inventors

• Dominique M. M. Fayeulle · Charenton-le-Pont, FR
• Jean-Paul Henon · Versailles, FR
• Rene J. Morbioli · Corbeil, FR

Key dates

• Filing date: May 23, 1988
• Grant date: Oct 15, 1991
• Expiry date: May 23, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12611
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A coating for a heat engine part, particularly a turbo-machine part made of superalloy, comprises an electrophoretically deposited metallic structure of cellular form with uniformly disposed cells of predetermined size, the structure preferably being composed of M, Cr, Al, and Y, where M denotes Ni, Co, Fe and mixtures thereof. The cellular metallic structure is consolidated by a sintering treatment, which may be reactive, or metallization, preferably in the vapor phase, and the coating is completed by a ceramic material applied by plasma spraying.