新型难加工材料的不断出现,促进了新刀具的开发,其中以金刚石作为涂层的刀具是当今最引人注目的。现将金刚石涂层刀具研究、开发、利用的现状和展望简述如下: ①金刚石涂层刀具通常以硬质合金作为基体材料,硬质合金本身在制造过程中需加入Co作为烧结粘合剂,以确保硬质合金的强度。在进行涂层时,合成金刚石必不可少的碳(C)则会不断扩散到Co中去,从而削弱了涂层与基体间的结合强度,影响到刀具的使用寿命(以Si_3N_4陶瓷为基体材料时亦有类似情况)。这是金刚 The continuous emergence of new hard-to-machine materials has led to the development of new tools, of which diamond-coated tools are the most striking today. Now diamond cutting tool research, development and utilization of the status and prospects are summarized as follows: ① diamond coating tool usually carbide as the matrix material, the cemented carbide itself in the manufacturing process need to add Co as a sintering adhesive, To ensure the strength of cemented carbide. During the coating, carbon (C), which is indispensable for synthetic diamond, will continuously diffuse into Co, which will weaken the bonding strength between the coating and the substrate and affect the service life of the tool (Si_3N_4 ceramics as the base material When a similar situation). This is King Kong