TiAlSiN-Ti(Mo)N/MoS2复合涂层微观结构及摩擦学性能的研究

采用磁控溅射技术在AISI-304不锈钢上制备了TiAlSiN-Ti(Mo)N/MoS2复合涂层。采用电子显微镜(SEM)、X射线衍射仪(XRD)、显微硬度计、球盘摩擦磨损试验机、表面形貌仪等对涂层的表面形貌、显微组织、硬度和摩擦学性能进行了系统的研究。结果表明TiAlSiN-Ti(Mo)N/MoS2复合涂层的硬度为27.56 GPa,相比于TiAlSiN涂层的硬度(29.1 GPa)有所下降,但是涂层的耐磨性能得到明显提高。在室温至600℃条件下TiAlSiN-Ti(Mo)N/MoS2复合涂层的主要磨损机理为黏着磨损,200和400℃时的磨损率分别为0.0339×10^-3和0.1122×10^-3mm^3/(Nm),相较于TiAlSiN涂层分别降低了38%和57%,600℃时的磨损率接近TiAlSiN涂层。总体来说TiAlSiN-Ti(Mo)N/MoS2复合涂层的性能高于单一的TiAlSiN涂层。

Study on microstructure and tribological properties ofTiAlSiN-Ti(Mo)N/MoS2 composite coating

TiAlSiN-Ti(Mo)N/MoS2 composite coating was deposited by magnetron sputtering technology on AISI-304 stainless steel.The surface morphology,microstructure,hardness and tribological properties of these coatings were systematically investigated by means of electron microscope(SEM),X-ray diffraction(XRD),micro hardness tester,ball-disc friction and wear tester,and surface contourgraph.The results showed that the TiAlSiN-Ti(Mo)N/MoS2 composite coating had hardness of 27.56 GPa and the TiAlSiN coatings had hardness of 29.1 GPa.Hardness of coatings didn't get increased,while wear properties got enhanced obviously.Adhesive wear occurred from room temperature to 600℃,and the wear rates at 200℃and 400℃were 0.0339×10^-3 mm^3/(Nm)and 0.1122×10^-3mm^3/(Nm),respectively.The wear rate reduced by 33.8%and 57.8%than that of TiAlSiN,but closed to that of TiAlSiN at room temperature and 600℃.The performance of TiAlSiN-Ti(Mo)N/MoS2 composite coating was superior to that of single TiAlSiN coating.