摘要
运用放电等离子烧结(SPS)技术制备出体积分数达60%,致密度达99%的SiC_P/Al复合材料.从烧结工艺的控制及电场的影响两方面对SPS烧结SiC_P/Al复合材料的机理进行了研究,认为SPS烧结SiC_P/Al复合材料的致密化过程主要依靠烧结温度、压力及升温速率的合理搭配,使Al熔融粘结SiC颗粒,而又不溢出模具;烧结过程中未发现明显的放电现象,可能由于电场太弱不足以引发放电.
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 SlOp/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.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第4期695-700,共6页
Journal of Inorganic Materials
基金
国家自然科学基金(50232020)
