Discontinuous silicon carbide fiber reinforced ceramic composite

Details Discontinuous silicon carbide fiber reinforced ceramic composite Discontinuous silicon carbide fiber reinforced ceramic composite

1982-02-05

1983-10-18

Bell, Mark

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 5, 501 7, 501 8, 501 9, C04B 3556, C03C 322

Patent

active

044106351

ABSTRACT:
Discontinuous silicon carbide fiber reinforced ceramic composites are disclosed having high strength, fracture toughness, and oxidative stability, even in high temperature oxidative environments. Disclosed composites include silicon carbide fiber reinforced aluminosilicate, lithium aluminosilicate, barium aluminosilicate, magnesium aluminosilicate, and combinations thereof. Flexural strengths in excess of 20,000 psi (138 MPa) at temperatures in excess of 1000.degree. C. are attainable with such composites. The composite is formed by starting with the ceramic matrix material in the glassy state and converting it from the glassy state to the ceramic state after densification of the composite.

REFERENCES:
patent: 3653851 (1972-04-01), Gruber
patent: 3892583 (1975-07-01), Winter et al.
patent: 4158687 (1979-06-01), Yajima et al.
patent: 4314852 (1972-09-01), Brennan et al.
patent: 4324843 (1982-04-01), Brennan et al.

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