Compositions: ceramic – Ceramic compositions – Refractory
Patent
1984-12-18
1986-08-05
Dixon, Jr., William R.
Compositions: ceramic
Ceramic compositions
Refractory
501 88, 423345, 556430, C04B 3502
Patent
active
046043675
ABSTRACT:
The invention provides a novel inorganic fiber composed of the elements of silicon, carbon, boron and nitrogen of which the Si/B molar ratio is 2:1 to 200:1. The inorganic fiber is obtained by a method comprising the steps of: (a) preparing an organoborosilicon polymer by heating a mixture of an organopolysilane and an organoborazine compound, e.g. B-trimethyl-N-triphenyl borazine, to effect thermal decomposition and polycondensation reaction; (b) spinning the polymer into a fibrous form; (c) infusibilizing the fiber of the polymer by thermally oxidizing in an oxidizing atmosphere or by irradiating with ionizing radiations; and (d) calcining the infusibilized fiber at 900.degree. to 1800.degree. C. The inventive inorganic fiber is more stable at high temperatures than conventional silicon carbide fibers.
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Hayashida Akira
Kobayashi Taishi
Takamizawa Minoru
Takeda Yoshihumi
Capella Steven
Dixon Jr. William R.
Shin-Etsu Chemical Co. , Ltd.
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