| Metal matrix composites(MMCs) are known to be widely applicable for parts of transportation devices such as automobiles and aircrafts. Especially Al matrix composites using SiC particles as a reinforcement are spotlighted because of low cost, superior specific modulus, specific strength, wear resistance and high temperature stabilities. But Al₄C₃ formed by interfacial reaction between Al and SiC weakens the interfacial bonding strength. It also was known to be unstable in the water soluble atmosphere. In this study, the passive oxidation of SiC powder is used as protective layer against the reaction between matrix Al and SiC particle. We investigated the changes in interfacial product of the composites and mechanical properties such as interfacial bonding strength, tensile strength in terms of the oxidized layer thickness of reinforcement. |
|
