以钇稳定四方氧化锆(Y-TZP)、Al2O3、纳米级的TiC为主要原料,采用真空热压烧结工艺,制备了ZrO2-Al2O3-TiC纳微米复合陶瓷模具材料.研究了该材料的力学性能和微观结构.研究结果表明:当TiC含量为20vol%,Y2O3含量为3mol%时,制备的ZrO2-Al2O3-TiC复合陶瓷模具材料具有良好的力学性能.抗弯强度、断裂韧性和硬度分别达到824 MPa、10.7 MPa·m1/2和11.67 GPa.晶粒细化、穿晶断裂、颗粒桥联、裂纹偏转和相变增韧是主要的增韧补强机理.
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