Process for producing high strength .beta.sialon-silicon carbide

Details Process for producing high strength .beta.sialon-silicon carbide Process for producing high strength .beta.sialon-silicon carbide

1987-07-28

1989-03-28

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 98, C04B 3558

Patent

active

048164283

ABSTRACT:
A process for producing a .beta.-sialon.silicon carbide complex includes mixing silicon nitride and silicon carbide with an aluminum alkoxide solution or a soluble aluminum salt solution and using the resulting homogeneous mixture as a starting material in forming a sintered body. The aluminum alkoxide solution or aluminum salt solution penetrates into the surface of each particle of the silicon nitride and silicon carbide, whereby the whole surface of each nitride and carbide particle is covered with aluminum alkoxide solution or aluminum salt solution, and homogeneous mixing is achieved. Therefore, defects such as pores, clusters of large grains, or unsintered parts are eliminated and the strength of the final sintered bodies is improved.

REFERENCES:
patent: 3974106 (1976-08-01), Richerson
patent: 4172108 (1979-10-01), Maeda
patent: 4243621 (1981-01-01), Mori et al.
patent: 4578363 (1986-03-01), Campos-Loriz

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