Part made from ceramic composite having a metallic coating, process for producing same and powder composition used

US5422188A · kind A · utility

Assignee

• Societe Nationale d'Etude et de Construction de Moteurs d'Aviation - S.N.E.C.M.A · FR

Inventors

• Georges Lagain · Enghien-les-Bains, FR
• Bernard P. C. Sohier · Savigny-le-Temple, FR
• Danilo Varela · Sèvres, FR

Key dates

• Filing date: May 1, 1992
• Grant date: Jun 6, 1995
• Expiry date: May 1, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1216
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A metallic coating on a part made from a ceramic composite is obtained from a powder obtained by mixing two powders: namely, PA1 a base powder A comprising 2 to 5% of a reactive element Ti or Zr, at least one melting element B or Si in proportions ensuring a liquidus temperature between 1000.degree. C. and 1300.degree. C. and additional metallic elements including at least 50% Ni or Ni+Co; PA1 a powder B in a weight ratio of 5 to 30%, the elements of which are chosen to impart to the part particularly desired surface properties such as anti-wear, anti-oxidation and/or anti-corrosion, and to ensure a liquidus temperature of powder B greater than that of powder A.