| 摘要 |
PROBLEM TO BE SOLVED: To obtain an SiC fiber reinforced Ti matrix composite having high specific strength and high specific rigidity in medium and high temp. regions at a relatively low cost by using SiC fibers of specific diameter, having a C layer of specific thickness on the surface, as a reinforcement and also using Ti or Ti alloy as a matrix. SOLUTION: An Si-containing polymer, such as polycarbosilane and polytitanocarbosilane, is melted and spun, infusibilized by means of electron beam irradiation, etc., and burned at about 1000 deg.C in the air or at about 1200 deg.C in He and then a C layer is formed by a CVD method, etc., by which SiC fiber of 10-50μm diameter, having a C layer of 0.2-2.5μm thick on the surface, is prepared. By using this fiber as a reinforcement and also using Ti or Ti alloy, such as Ti-4.5Al-3V-2Mo-2Fe, as a matrix, the SiC fiber reinforced Ti matrix composite, excellent in chemical compatibility of interface, can be obtained.
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