Review péÉÅá~ä fëëìÉ Äó dìÉëí bÇáíçêëW lêÖ~åáÅ-íç-fåçêÖ~åáÅ`çåîÉêëáçå mêçÅÉëë Ñçê mçäóãÉê-aÉêáîÉÇ`Éê~ãáÅë pá`_~ëÉÇ`Éê~ãáÅ cáÄÉêë mêÉé~êÉÇ îá~lêÖ~åáÅíçfåçêÖ~åáÅ çåîÉêëáçå mêçÅÉëë-^oÉîáÉï ሱᑿ-ᠪᑿং၁ɟɵɃɁǺȗȚ SiC ṾɃɱɧɋȷέỺǽ۰༔ ἕ◻Several types of Si-based ceramic fibers have been prepared using an organic-to-inorganic conversion process. In this article, the preparation, microstructure, and high-temperature stability of SiC-based ceramic fibers prepared from polycarbosilane of an organosilicon polymer are reviewed. The first fiber produced was an amorphous Si-C-O fiber, next was a low-oxygen content Si-C fiber, and finally, a nearly stoichiometric SiC fiber was developed. These fibers are continuous fine fibers that have high tensile strength with high heat resistance. The pyrolytic behavior and active-passive oxidation of these fibers at high temperatures are described here. The heat resistance of these fibers increases in the order of the Si-C-O fiber, the Si-C fiber, and the SiC fiber. The hightemperature properties are dependent on the atomic arrangement and the quantity of amorphous SiC x O y and glassy carbon in the fibers. Possible applications for these fibers are as refractory materials, and as reinforcement fibers for plastics, metals, and ceramics.

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