Ceramic composites and process for its production
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United States of America Patent
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Jun 21, 1994
Grant Date -
N/A
app pub date -
Mar 8, 1993
filing date -
Sep 18, 1990
priority date (Note) -
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Abstract
A ceramics composites prepared by dispersing any one of the following materials (i) to (viii) in Al.sub.2 O.sub.3 which as a matrix-containing crystalline grains having a grain size of 0.5 to 100 .mu.m. (i) 3 to 40% by volume of fine TiN particles having a particle size of not more than 2 .mu.m and 3 to 40% by volume of fine SiC particles having a particle size of not more than 2 .mu.m. (ii) 3 to 40% by volume of fine TiN particles having a particle size of not more than 2 .mu.m and 3 to 40% by volume of fine Si.sub.3 N.sub.4 particles having a particle size of not more than 2 .mu.m. (iii) 2 to 35% by volume of fine TiC particles having a particle size of not more than 2 .mu.m and 5 to 40% by volume of SiC whiskers having a diameter of 0.05 to 2 .mu.m. (iv) 2 to 35% by volume of fine TiC particles having a particle size of not more than 2 .mu.m and 5 to 40% by volume of Si.sub.3 N.sub.4 whiskers having a diameter of 0.1 to 2 .mu.m. (v) 3 to 40% by volume of fine TiN particles having a particle size of not more than 2 .mu.m and 3 to 30% by volume of SiC whiskers having a diameter of 0.05 to 2 .mu.m. (vi) 3 to 40% by volume of fine TiN particles having a particle size of not more than 2 .mu.m and 3 to 30% by volume of Si.sub.3 N.sub.4 whiskers having a diameter of 0.1 to 2 .mu.m. (vii) 2 to 35% by volume of fine TiC particles having a particle size of not more than 2 .mu.m and 5 to 40% by volume of fine SiC particles having a particle size of not more than 2 .mu.m. (viii) 2 to 35% by volume of fine TiC particles having a particle size of not more than 2 .mu.m and 5 to 40% by volume of fine Si.sub.3 N.sub.4 particles having a particle size of not more than 2 .mu.m.
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