ポリカルボシランの多段含浸法による三次元チラノ繊維強化炭化ケイ素複合体の作製と評価

概要

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3 Dimensional Tyranno fiber reinforced SiC composites were fabricated by infiltration of molten polycar bosilane into a 3 dimensional textile preform (volume fraction: 39% in an autoclave followed by pyrolysis in an argon atmosphere up to 1200℃ An attempt was made to improve the density of the composite by repeating the infiltration and pyrolysis process. Ten times repetition increased the density of the composite to 2.4 x 10^3 kg m^<-3> (relative density: 83% , open porosity: 5%) The bending strength and fracture toughness of the composite were 420 MPa and 11.5 MPa m^<1/2> respectively. The composite showed semistable fracture behavior because of bridging of fibers parallel to the tensile direction.
社団法人日本セラミックス協会の論文
1995-01-01