Abstract

Fe/SiC is one of the metal matrix composite (MMC) materials that has high wear resistant, high hardness and used in high temperature performance applications. In this paper, microwave hybrid sintering has been studied to sintered Fe/SiC and the results obtained were compared with those obtained by conventional sintering. Three compositions of Fe/SiC in the weight percentage ratio of 100:0, 90:10 and 80:20 were prepared and compacted using uniaxial die compaction method. The sintering temperature of 1000°C with the heating rate of 10°C/min were used for both microwave hybrid and conventional sintering. The mechanical properties, relative density and % of total porosity of the sintered Fe/SiC compacts from the two different sintering method were analysed and compared. The results show that microwave hybrid sintering gives better mechanical and physical properties compared to conventional sintering. The 100:0 Fe/SiC sintered by microwave sintering has the highest relative density, the lowest % of total porosity which leads to highest tensile strength. The reinforcement of SiC had cause Fe/SiC to be increased in hardness and the highest hardness found is at 80:20 Fe/SiC samples sintered by microwave hybrid sintering which is 124.84 Hv.

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