中文摘要：

采用真空热压烧结工艺制备了Al2O3／Ti（C，N）／ZrO2纳微米复合陶瓷工模具材料。用扫描电镜观察了其断口形貌和微观结构。分析了纳米ZrO2含量对复合材料力学性能和微观结构的影响。结果表明：当ZrO2体积分数为10％时，其抗弯强度、断裂韧性、硬度分别达到625MPa、8．58MPa·m^1/2。和16．37GPa。

英文摘要：

Al2O3 based ceramic tool and die composite materials reinforced by nanometer sized Ti（C, N） and ZrO2particles are fabricated by vacuum hot--pressing technique. Fracture morphology and mi- crostructure are observered with SEM. The effects of ZrO2 contents on the mechanical properties of the ceramic composite are investigated. Results show that as ZrO2content increases to be 10vol%, its flexural strength, hardness and fracture toughness are up to 625MPa, 8.58MPa·m1/2 and 16.37GPa, respectively.