抄録
Mechanisms controlling tensile strength of carbon-carbon (C/C) composites were examined at first. Results indicated that interfacial strength is one of the key properties strongly which affect on tensile strength. In addition, it was revealed that fiber spacing strongly affects on the interfacial strength. Based on this result, the interfacial strength was tried to be controlled by controlling fiber spacing in the composite. For this purpose, carbon black powder was incorporated in the matrix precursor (phenolic resin) in advance. Results showed that fiber spacing was successfully controlled and the interfacial shear strength was reduced.
