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ＴｉＢ２具有熔点高、硬度高和导热性、导电性及抗氧化性能都好等优点，在切削刀具、耐磨零件和某些特殊工况下使用的材料等方面的应用前景广阔．目前，含ＴｉＢ２的Ａｌ２Ｏ３基陶瓷刀具材料已经开发出来并投入实际应用，但对其摩擦磨损特性研究却还不多．因此，采用热压烧结工艺制备了Ａｌ２Ｏ３／ＴｉＢ２陶瓷刀具材料，在ＭＭ－２００型摩擦磨损试验机上，对不同ＴｉＢ２含量的增加，Ａｌ２Ｏ３／ＴｉＢ２陶瓷材料与淬火４５＃钢配副的摩擦学性能作了试验研究．结果表明：ＴｉＢ２的含量增加，Ａｌ２Ｏ３／ＴｉＢ２陶瓷材料的耐磨性明显提高，而摩擦系数仅略有上升，在切削加工淬火４５＃钢的过程中，Ａｌ２Ｏ３／ＴｉＢ２陶瓷刀具的抗磨能力比目前广泛使用的Ａｌ２Ｏ３／ＴｉＣ陶瓷刀具的高１倍以上．Ａｌ２Ｏ３／ＴｉＢ２陶瓷刀具材料的磨损机理主要是粘着、耕犁和脆性微脱落
TiB2 has the advantages of high melting point, high hardness and thermal conductivity, good electrical conductivity and oxidation resistance, and has broad application prospect in cutting tools, wear-resistant parts and materials used under certain special conditions. At present, the TiB2-based Al2O3 ceramic tool material has been developed and put into practical application, but its friction and wear properties are not many studies. Therefore, the Al2O3 / TiB2 ceramic tool material was prepared by hot-pressing sintering process. The tribological properties of Al2O3 / TiB2 ceramic material and quenched 45 # steel were studied on MM-200 friction and wear tester with different content of TiB2 The experimental study. The results show that the content of TiB2 increases, the wear resistance of Al2O3 / TiB2 ceramic material increases obviously and the friction coefficient increases only slightly. The wear resistance of Al2O3 / TiB2 ceramic cutting tool is lower than that of the current The widely used Al2O3 / TiC ceramic tool is more than twice as high. The wear mechanism of Al2O3 / TiB2 ceramic tool materials is mainly sticking, plow and brittle micro-shedding