スラリー及び有機ケイ素ポリマーの含浸による3次元炭素繊維強化SiC基複合材料の作製

抄録

Three-dimensional (3D) carbon fiber reinforced SiC composites have been fabricated by using slurry infiltration and repeated infiltration of organosilicon (polycarbosilane) resin. Open porosity of the infiltrated body was decreased from 34% after the first slurry infiltration to about 10% after the eighth infiltration of poly-carbosilane. Relative density of the composite increased to 89%, in spite of densification under normal pressure without sintering additive. The maximum values of flexural strength and fracture toughness were 160MPa and 7.5MPa·m^1/2, respectively.