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以ＴｉＯ２，Ａｌ；Ｃ，纳米 ＺｒＯ２粒子为原料，利用燃烧合成－热压工艺制备了Ａｌ２Ｏ３－ＴｉＣ－ＺｒＯ２纳米复合陶瓷．添加ＺｒＯ２可使 Ａｌ２Ｏ３－ＴｉＣ断裂方式由沿晶断裂转变为穿晶断裂．ＺｒＯ２纳米粒子弥散于基体中，其周围产生的应力集中可引发位错，起到亚晶界的作甲，并可使位错钉扎、堆积，阻碍位错运动，从而使复合陶瓷的力学性能得到明显改善：抗弯强度为７０６ＭＰａ，提高幅度达１９．８％；断裂韧性为 ６．３ ＭＰａ·ｍ１／２，提高幅度１８．９％；洛氏硬度为 ９４．４．
Al2O3-TiC-ZrO2 nanocomposite ceramics were prepared by combustion synthesis-hot pressing with TiO2, Al; C and nano-ZrO2 particles as raw materials. Addition of ZrO2 can change the mode of Al2O3-TiC fracture from intergranular fracture to transgranular fracture. ZrO2 nanoparticles dispersed in the matrix, the stress concentration around it can cause dislocation, play a sub-grain boundary for a, and can dislocate pinning, accumulation, obstruction dislocation movement, so that the mechanical properties of composite ceramics The results show that the flexural strength is 706MPa, the increase rate is up to 19.8%, the fracture toughness is 6.3 MPa · m1 / 2, the increase rate is 18.9% and the Rockwell hardness is 94.4.