Synthesis and phase evolution of Si-C-Ti powder derived from poly(methylsilaacetylene) and Ti |
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| Authors: | Yongming Luo Zhimin Zheng Xuening Mei Jidong Hu Caihong Xu |
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| Affiliation: | Beijing National Laboratory of Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Science, Beijing, 100190, PR China |
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| Abstract: | Si-C-Ti powder was synthesized by reactive pyrolysis of poly(methylsilaacetylene)(PSCC) precursor mixed with metal Ti powder. Pyrolysis of PSCC/Ti mixture with certain atomic ratio was carried out in argon atmosphere between 1300 °C and 1500 °C. The metal-precursor reactions, and phase evolution were studied using X-ray diffraction and scanning electron microscopy equipped with EDX. Ti3SiC2 phase was obtained from reaction of PSCC and Ti for the first time. Ti3SiC2 formation started at 1300 °C and its amount increased significantly at 1400 °C. In addition, liquid formed by additive CaF2 could promote the formation of Ti3SiC2 phase. |
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| Keywords: | Poly(methylsilaacetylene) Ti3SiC2 X-ray techniques Microstructure |
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