In this paper, the high performance of diamond film coated tools were expounded by testing the property of diamond film coating with SEM and comparision with natural diamond.

• 用扫描电镜等方式检测金刚石镀膜的性能，并与天然金刚石的相关参数进行比较，阐明了金刚石涂层刀具的优异性能。