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Synthesis of continuous silicon carbide fibre

Part 2 Conversion of polycarbosilane fibre into silicon carbide fibres

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Abstract

The polycarbosilane (PC-470) synthesized by thermal decomposition of polydimethylsilane was melt-spun. The conversion process of the fibre into silicon carbide fibre was investigated by chemical analysis, TG-DTA and infra-red spectrum analysis, and measurements of the mechanical properties and densities. The conversion process of polycarbosilane (PC-TMS) synthesized by Fritz was examined and compared with the conversion process of PC-470. It is shown that the process is divided into three stages; condensation at the first stage, thermal decomposition at the second stage and crystallization at the third stage. The mechanical properties and density of the SiC fibre obtained by heattreatment were affected by the molecular weight and structure of the polycarbosilane of the starting material.

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Author notes

  1. M. Iimura

    Present address: Research and Development Laboratory, Nippon Carbon Co, Ltd, Shin-urashima-cho, Kanagawa-ku, Yokohama-shi, 221, Kanagawa-ken, Japan

Authors and Affiliations

  1. The Oarai Branch, The Research Institute for Iron, Steel and Other Metals, Tohoku University, Oarai, 311-13, Ibaraki-ken, Japan

    Y. Hasegawa, M. Iimura & S. Yajima

Authors
  1. Y. Hasegawa
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  2. M. Iimura
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  3. S. Yajima
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Hasegawa, Y., Iimura, M. & Yajima, S. Synthesis of continuous silicon carbide fibre. J Mater Sci 15, 720–728 (1980). https://doi.org/10.1007/BF00551739

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  • DOI: https://doi.org/10.1007/BF00551739

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