Interfacial reactions in aluminum/SiC fibre composite electric power cable using low oxygen SiC fibre reinforcement

摘要

We have evaluated the interfacial reactions of SiC fibre reinforced Al electrical power cable using low oxygen SiC fibre (Si:62.4, C:37.1, 0:0.5 mass%), and determined the relationship between the tensile strength and the amount of reaction products at the interface. The following are occurring at the SiC/Al interface: i) diffusion of Al atoms into the SiC fibre, ii) formation of needle-shape Al_(4)C_(3) compounds, and iii) formation of Al_(9)Si compounds. Formation of Al_(4)C_(3) and Al_(9)Si compounds at the interface causes the strength of SiC/Al composite electric power cable to deteriorate.