采用反应热压烧结法制备了TaC/Ti3SiC2复合材料,借助XRD、SEM、能谱仪以及热重分析等,研究了TaC含量对TaC/Ti3SiC2复合材料的相组成、显微结构、力学性能和抗氧化性的影响.结果表明:采用反应热压烧结法可以制备出致密的TaC/Ti3SiC2复合材料,该复合材料的主晶相为Ti3SiC2和TaTiC2,还含有少量的TiC;随着TaC含量的增加,TaC/Ti3SiC2复合材料的弯曲强度和断裂韧性呈现先增大后降低的变化趋势,当TaC含量为30wt％时,二者均达到最大值,此时弯曲强度为404 MPa,断裂韧性为4.10 MPa·m1/2;TaC的引入,使TaC/Ti3SiC2复合材料抗氧化性能明显优于Ti3SiC2材料.
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