High-Resolution TEM Observation of β-SiC Nano-Crystallite Evolution in Si–C–Ti–O Fibers Pyrolyzed from Polytitanocarbosilane Precursor

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  • Hirotsu Y.
    Institute for Materials Research, Tohoku University
  • Wakoh K.
    Institute for Materials Research, Tohoku University
  • Suzuki K.
    Institute for Materials Research, Tohoku University
  • Sumiyama K.
    Institute for Materials Research, Tohoku University
  • Yamamuro S.
    Institute for Materials Research, Tohoku University
  • Kamiyama T.
    Institute for Materials Research, Tohoku University
  • Shibuya M.
    Institute for Materials Research, Tohoku University
  • Yamamura T.
    Institute for Materials Research, Tohoku University

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  • High-Resolution TEM Observation of ベータ
  • High-Resolution TEM Observation of β-SiC Nano-Crystallite Evolution in Si–C–Ti–O Fibers Pyrolyzed from Polytitanocarbosilane Precursor

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Abstract

Si–C–Ti–O fibers pyrolyzed from polytitanocarbosilane polymer precursors have been observed by a high-resolution transmission electron microscope. Nano-crystalline clusters are finely dispersed in the amorphous matrices of Si–C–Ti–O fibers made from thermal-oxidation-cured and electron-irradiation-cured precursors. Nano-beam electron diffraction and simulated patterns demonstrate that these clusters are β-SiC. Such cluster formation is enhanced in the specimens heat-treated at a high temperature and cured by electron-irradiation.

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