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采用超微Ａｌ２Ｏ３粉和热压烧结工艺制备出两种Ａｌ２Ｏ３基陶瓷（Ａｌ２Ｏ３－ＭｇＯ－ＴｉＣ、Ａｌ２Ｏ３－ＭｇＯ－ＴｉＣ－Ｙ－ＰＳＺ）。研究了这两种材料烧结体的密度、显微组织和力学性能。并将烧成陶瓷加工成切削刀片，对３５ＣｒＭｎＳｉＡ超高强度调质钢进行切削试验，所得结果与其它几种陶瓷刀具的切削性能进行了比较。
Two Al2O3-based ceramics (Al2O3-MgO-TiC, Al2O3-MgO-TiC-Y-PSZ) were prepared by ultrafine Al2O3 powder and hot pressing sintering process. The density, microstructure and mechanical properties of the two sintered materials were studied. The sintered ceramic was machined into a cutting blade. The cutting test of 35CrMnSiA ultra-high strength quenched and tempered steel was carried out. The results were compared with those of several other ceramic tools.