在经过离子氮化处理的H13钢基体上,采用闭合场非平衡磁控溅射法制备了CrTiAlN 硬质涂层,并与未氮化的镀膜试样进行了膜基结合强度、膜层微观结构形貌及相组成的对比。结果表明:离子氮化处理可提高基体硬度,形成硬度梯度过渡;氮化+镀膜复合处理可以显著提高膜基结合强度。

A nitride layer was first formed on H13 steel samples by plasma nitriding and then a CrTiAlN coating was prepared on the surface of nitrided and non-nitrided H13 steels using closed field unbalanced magnetron sputter ion plating. The adhesion strength, the microstructure and phase structure of the film were compared between nitrided and non-nitrided H13.The results show that the substrate hardness increases after plasma nitridation and exhibits a gradient hardness transition. The complex treatment of plasma nitridation and CrTiAlN coatings could increase the adhesion strength significantly.