发明名称 |
SIC-WHISKER, MIT IHNEN VERSTAERKTE KERAMIKMATERIALIEN UND VERFAHREN ZU DEREN HERSTELLUNG |
摘要 |
Disclosed are surface-coated SiC whiskers, proceses for preparing the same, a ceramic reinforced with the same, and a process for preparing said reinforced ceramic. The surface-coated SiC whiskers are SiC whiskers (I) having a surface coated with a thin carbonaceous layer having a thickness of 7 to 100 ANGSTROM , or SiC whiskers (II) having a surface coated with an Si3N4 layer. The SiC whiskers (I) can be prepared by dispersing SiC whiskers in a homogeneous solution of a thermosetting resin in an organic solvent, separating the whiskers by filtration and drying it, curing the thermosetting resin, and firing the cured thermosetting resin in a non-oxidizing atmoshpere at 800 DEG to 1,600 DEG C. The SiC whiskers (II) can be prepared by dispersing SiC whiskers in a solution of an organosilicon polymer in an organic solvent, separating the whiskers by filtration and drying it, heating the whiskers coated with the organosilicon polymer in a nitriding atmoshpere at 1,200 DEG to 1,600 DEG C. A ceramic reinforced with the SiC whiskers (I) or (II) is obtained by mixing a ceramic powder with the SiC whiskers (I) or (II) and sintering the mixed powder in an inert atmosphere or in vacuo. |
申请公布号 |
DE3819560(A1) |
申请公布日期 |
1989.01.05 |
申请号 |
DE19883819560 |
申请日期 |
1988.06.09 |
申请人 |
TOKAI CARBON CO. LTD., TOKIO/TOKYO, JP |
发明人 |
SUGIHARA, KANJI;YAMAMOTO, MOTOHIRO;KIDA, TOHRU;FUKAZAWA, MINORU, GOTENBA, SHIZUOKA, JP |
分类号 |
C04B35/593;C04B35/80;C04B41/45;C04B41/50;C04B41/81;C04B41/87;C30B33/00 |
主分类号 |
C04B35/593 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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