Consolidating Mechanism of High Volume Fraction of SiCp/Al Composites by SPS
高体积分数的 SiCp/Al复合材料的 SPS致密化机理研究

60vol%SiCp/Al composites with high relative density of 99% were fabricated by spark plasma sintering (SPS). The consolidating mechanism of SiCp/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 SiCp/Al composites by SPS is mainly dependent on the proper adjustment of temperature, pressure and heating-rate which make Al 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.