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A SAXS study of the nanometer scale hybrid structure of Si---Ti---C---O amorphous fibers |
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| Authors: | Kentaro Suzuya Tomoaki Kamiyama Takemi Yamamura Kiyohito Okamura and Kenji Suzuki |
| Institution: | a Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aobaku, Sendai 980, Japan b Ube Research Laboratory, Corporate Research and Development, Ube Industries Ltd., Ube, Yamaguchi 755, Japan c College of Metallurgical Engineering, University of Osaka Prefecture, Mozu-umemachi, Sakai, Osaka 591, Japan |
| Abstract: | A small-angle X-ray scattering (SAXS) study was performed to reveal the nanometer scale hybrid structure of Si---Ti---C---O fibers prepared by the pyrolysis of polytitanocarbosilane. The SAXS profile for Si---Ti---C---O fibers is attributed to two different types of scattering entities: an anisotropic contribution from long filaments with diameters hundreds to thousands of Ångströms and an isotropic contribution from β-SiC fine clusters of about a nanometer in diameter. A drastic degradation in the tensile strength of the fibers is correlated to the characteristic variations in their long-and medium-range structure. |
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