METALLIC FIBER-REINFORCED COMPOSITE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a metallic fiber-reinforced composite material having improved strength while keeping the characteristics of an SiC reinforced composite material such as lightweight and high rigidity.

SOLUTION: The lightweight and high rigidity metallic fiber-reinforced composite material having improved strength is obtained by compositing the metallic long fiber having higher coefficient of thermal expansion and higher melting point than those of Si and SiC as reinforcing materials with an Si matrix. The strength of the composite material is improved by using the metallic long fiber having higher coefficient of thermal expansion and higher melting point than those of Si as an additional reinforcing material to the conventional SiC-reinforced composite material in this way to cause compression stress due to the shrinkage of the metallic long fiber during the cooling from a high temperature in the composite treatment to room temperature in the composite material.

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