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This Study is to investigate on the wear characterization and heat resistance of aluminum/silicon carbide (Al/SiC) with different particles (3, 5, and 10 μm) composites manufactured by duplex process, which consists of squeeze-infiltration and squeeze casting. Also, this study is to investigate the effect of alloying element (Ni) on the microstructure, wear behavior and heat resistance of Al/SiC composite. Owing to the increase in interfacial area between SiC particles and matrix in both the as-cast and heat exposed specimens (at 250 o C and 350 o C for 5hr), the decrease in nano-SiC particles size resulted in the increase in the hardness of composites. And in case of 3 μm SiC reinforced Al composites as compared with other composites, the highest density of dislocation was generated during manufacture. Composite with 3μm SiC has the lowest wear amount among composites reinforced with 5 and 10μm SiC. Heat resistant property was improved with increasing Ni addition content (wt.) in Al/SiC composites. The wear resistance at 200 o C in argon gas on composite was greater than those at 200 o C and room temperature in the as-composites.

WEAR AND HEAT CHARACTERIZATION OF BOTH THE AS-CAST AND HEAT EXPOSED SPECIMENS FOR AL/SiC PARTICULATE COMPOSITES