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冲击持续时间和涂层脱落持续时间。获得涂层或薄膜及材料的方法主要有PVD法，如溅射、离子镀、离子沉积、化学气相沉积等热化学气相沉积、等离子CVD、扩散镀铬、扩散镀铬等。研究表明，涂层的冲击时间受冲击时间的影响很大，并与涂层基材的选择和膜层厚度有关。此外，两种材料界面上的结合条件非常重要，以至于涂层材料与母材之间的结合强度通过划痕测试仪进行了反算。通过划痕试验发现，在低载荷和加载量较大的情况下，随着压头直径的减小，涂层的穿透性断裂和压头边缘与母材的直接接触，摩擦变大，涂层容易断裂时，由于摩擦力的升高，材料达到临界失效。在TiN涂层和TiN涂层上，涂层材料容易发生母材变形。从以上结果来看，PVD法在膜的附着力上明显优于其他方法，但总体上膜的剥离并不显着。

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.