以SKD12冷作模具钢为工件材料,对比分析了Al Ti N+Si3N4(M01)、Ti Si N(M02)和Al Ti N(M03)3种涂层刀具的切削性能,并用扫描电镜观察了不同涂层刀具的磨损形貌以及局部区域能谱分析。结果表明,3种涂层材料都可以提高机械加工刀具的抗磨损性能;M01涂层刀具耐磨损性能提高的关键是改善基体材料的性能以及对刀刃进行强韧化处理;M02涂层刀具的耐磨损性能的改善主要需要改善抗粘结性能、摩擦和润滑性能;对于M03涂层刀具而言,改善涂层的冲击韧度以及与基体的结合强度是提高耐磨损性能的关键。 Using the cold die steel SKD12 as the workpiece material, the cutting performance of three kinds of coated tools such as Al Ti N + Si3N4 (M01), Ti Si N (M02) and Al Ti N (M03) was analyzed and compared by scanning electron microscopy Abrasion morphology of coated tool and energy spectrum analysis in local area. The results show that all the three coating materials can improve the wear resistance of the machined tool. The key to improve the wear resistance of the M01 coated tool is to improve the properties of the matrix material and to toughen the cutting edge. Improvements in wear resistance primarily require improved adhesion, friction, and lubricity; for M03 coated tools, improving the impact toughness of the coating and the bond strength to the substrate are key to improving wear resistance.