DEVELOPMENT OF HIGH-TENSILE STRENGTH SILICON-CARBIDE FIBER USING AN ORGANOSILICON POLYMER PRECURSOR

被引:324
作者
YAJIMA, S
HASEGAWA, Y
OKAMURA, K
MATSUZAWA, T
机构
[1] Oarai Branch, Research Institute for Iron, Steel and other Metals, Tohoku University, Oarai, Ibaraki-ken
关键词
D O I
10.1038/273525a0
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
THE high tensile strength SiC fibre developed in our laboratory 1-5 is extremely heat-resistant and its wettability by metals is good. Metal-matrix composites reinforced with the SiC fibre should therefore be of practical use. Polycarbosilane, the precursor of the fibre, is synthesised by thermal decomposition under high pressure of poly dimethylsilane in an autoclave. To produce the SiC fibre on an industrial scale, polycarbosilane needs to be produced in large quantities with high yield. The autoclave method requires a large amount of space, so the operation is inconvenient and uneconomic. We have, therefore, developed a new method of synthesising the polycarbosilane at normal pressure by adding several wt % of polyborodiphenylsiloxane6 to polydimethylsilane. The structure and properties of the new polycarbosilane, and the SiC fibre obtained from it are described here. © 1978 Nature Publishing Group.
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页码:525 / 527
页数:3
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