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Open AccessArticle10.2320/matertrans1989.38.5

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

Yoshihiko Hirotsu,Kimio Wakoh,Kenji Suzuki,K. Sumiyama,Saeki Yamamuro,Tomoaki Kamiyama+2 more-1997-01-01-Materials Transactions JIM
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TL;DRAbstract

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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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.

Keywords

Transmission electron microscopyCrystalliteMaterials scienceAmorphous solidElectron diffractionHigh-resolution transmission electron microscopySelected area diffractionPyrolysis

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