Composite ceramic sintered body and process for production there

Details Composite ceramic sintered body and process for production there Composite ceramic sintered body and process for production there

1990-10-26

1992-07-21

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 92, 501 97, 501 32, 501126, 501103, C04B 3580, C04B 3558

Patent

active

051322579

ABSTRACT:
A composite ceramic sintered body is made from a ceramic matrix comprised mainly of silicon nitride, silicon oxynitride or an inorganic oxide selected from alumina, mullite, zirconia, high silica glass, lithium-aluminosilicate glass, magnesium-aluminosilicate glass or barium-magnesium-aluminosilicate glass, containing both whiskers and particles of a material selected from silicon carbide, silicon nitride, silicon oxynitride, alumina and zirconia dispersed therein. The whiskers have a diameter of 0.1 to 5 .mu.m and the particles have an average particle size of 5 to 60 .mu.m. The composite ceramic sintered body is homogeneous and isotropic, and it has a high strength and high toughness at a high temperature and an excellent heat resistance and oxidation resistance.

REFERENCES:
patent: 4745091 (1988-05-01), Landingham
patent: 5026671 (1991-07-01), Hanzawa et al.

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