Consolidating Mechanism of High Volume Fraction of SiC_p/AI Composites by SPS

60vol%SiC_p/Al composites with high relative density of 99% were fabricated by spark plasma sintering(SPS).The consolidating mechanism of SiC_p/Al composites by SPS was analyzed on two aspects:(1)the adjustment of sintering parameters;(2)the effect of electric field.The results indicate that the consolidating procedure of SiC_p/Al composites by SPS is mainly dependent on the proper adjustment of temperature,pressure and heating-rate which make A1 melt and adhere SiC particles without spraying out of the graphite dies;no obvious spark appears during the sintering,which may result from the weak electric field.