High strength, thermally stable magnesium aluminosilicate glass-ceramic matrix-sic fiber composites

US4588699A · kind A · utility

Assignee

• UNITED TECHNOLOGIES CORPORATION · US

Inventors

• John J. Brennan · Portland, US
• Kenneth Chyung · Corning, US
• Mark P. Taylor · Corning, US

Key dates

• Filing date: Mar 17, 1983
• Grant date: May 13, 1986
• Expiry date: Mar 17, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2214/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A silicon carbide fiber reinforced barium modified magnesium aluminosilicate matrix composite is described having high strength and thermal stability at temperature in excess of 1200.degree. C. The matrix material contains about 5% to about 14% magnesium oxide and about 5% to about 25% barium oxide. While any suitable ratios of fiber to matrix can be used, the composite for most applications for example, in the heat engine area, will contain approximately 20% to 50% by volume silicon carbide fibers.