2745 PSH-PIP法によるSiC繊維強化SiC基複合材料の力学特性(S18-1 セラミックス(1),S18 セラミックスおよびセラミックス系複合材料)

概要

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As a promising approach to improve a matrix microstructure of SiC/SiC composite, the polymer impregnation and pyrolysis process combined with powder space holder technique (PSH-PIP) has been developed. PSH method was employed for making porous structure which potentially contributes to efficient gas purge and uniform shrinkage during pyrolysis. Under the best matrix producing condition which had been found through monolith productions, unidirectional SiC/SiC composites were successfully fabricated. By comparing them with a conventionally-fabricated composite, the matrix formation of improved homogeneity with smaller amount of process defects was certainly approved. The effectiveness of the microstructural improvement on mechanical properties was explicitly demonstrated as expected.
2007-09-07