ANTI-IMPACT WEAR TEST FOR SURFACE MODIFICATION FILM

系统地研究了涂层材料在摩擦学条件下的摩擦磨损持续时间和涂层脱落持续时间。获得涂层或薄膜层和材料的方法有PVD法如溅射、离子镀、离子注入，CVD法如热CVD、等离子体CVD、扩散渗铬和展成涂层等。显然，制备涂膜的方法适合于实际性能。此外，涂层材料与基体金属之间的结合强度通过划痕试验机进行了研究。通过划痕试验得出了在低载荷下压头直径越小摩擦力越大，以及在较大载荷下压头直径越大摩擦力越大的结论，这是由于涂层的穿透性破坏以及压头边缘与基体的直接接触，从而阐明了在涂层易破坏的情况下，材料由于摩擦力的上升而达到临界破坏。而TiN涂层膜的涂层材料容易随基体金属变形。从以上结果可以看出，PVD法在膜的附着力方面比其它方法上级得多，但总的来说，膜的剥离并不显著。

The percussive duration and detached duration of coating film of the coating materials used under triborogical condition are investigated system atically. The way to get the coating film or thin film layers and materials were PVD method such as sputtering, ion plating, ionplanting, CVD method sucb as thermal CVD, Plasma CVD, diffusion like chromaizing and splay coating.It has been crarified that the percussive duration are much affected and depended on the base materials chose for coating materials and film thickness as well.From above results, it is dear that the ways to make the coating film to be adapted as practical performance. Furthermore, adhesive condition in the interface of both materials is so important that the binding strength between a coating material and base metal were invertigateed through the scratch tester. The some results that the friction became larger with small diameter of indenter under low load and with the added relatively large load because the penetrative break of coating film and the direct contact of the indenter edge to base metal as well were obtained through scratch testIt was crarified that in case of the easy break down of a coating film the materials reaches to critical failure owing to rising up friction.On TiNC coating film and TiN coating film the coating material is easily followed to base metal deformation. From the above result PVD method is much superior than the other methods on the point of a strength of film adhesion But in general the detachment of film is not remarkable.