Abstract
Gray cast iron and high strength and heat resistant silicon carbide fibers were used as a base metal and composite component respectively. Composite materials were prepared by immersing at different temperatures and succeeding holding for different times by the use of specially designed jig. Some composites were heat treated. Immersing at 1,200°C without holding before cooling ensures the optimum microstructure. Some intermetallic Fe-Si compounds are formed by mutual diffusion of Fe from molten metal and Si from SiC. This reacted layer thickens with prolonged holding times both in composite processing and in post heat treating. A structural model is proposed for the forming process of reaction layers at composite interfaces.
