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研制出一种稀土补强Al2O3/(W，Ti)C新型陶瓷刀具材料，并对其增韧补强机制作了研究。表明：稀土元素的添加能以净化界面、提高界面结合强度以及纳米质点强化的作用机制显著提高Al2O3/(W，Ti)C陶瓷刀具材料的抗弯强度和断裂韧度。而且由于材料中强弱界面的共同存在，使得裂纹桥联、裂纹分支、裂纹偏转以及微裂纹等增韧机制得到明显增加和加强，从而以多种增韧机制及其相互作用共同提高稀土补强Al2O/(W，Ti)C陶瓷刀具材料的断裂韧度。
A rare earth reinforced Al2O3 / (W, Ti) C ceramic cutting tool was developed and its toughening and reinforcing mechanism was studied. It shows that the addition of rare earth elements can significantly improve the flexural strength and fracture toughness of Al2O3 / (W, Ti) C ceramic tool material by purifying the interface, increasing the bonding strength of the interface and strengthening the nanosize point mechanism. And due to the coexistence of strong and weak interfaces in the material, the toughening mechanisms such as crack bridging, crack branching, crack deflecting and microcracking are obviously increased and strengthened, so that the toughening mechanism and the interaction thereof jointly improve the rare earth reinforcing Fracture Toughness of Al2O / (W, Ti) C Ceramic Tool Materials.