金刚石表面化学镀Ni-P复合层的显微分析  

Micro-analysis of Ni-P composite coating on diamond surface by chemical plating

作　　者：刘世敏[1] 李国彬[2] 

机构地区：[1]天津大学材料学院 [2]河北工业大学材料学院,天津300132

出　　处：《金刚石与磨料磨具工程》2008年第3期58-61,65,共5页Diamond & Abrasives Engineering

摘　　要：为了提高金刚石工具使用寿命,必须解决金刚石的早期脱落问题,本文利用了化学镀的方法在金刚石表面成功地镀上了Ni-P复合层,改善了金刚石与胎体材料的结合状态。并且利用X射线衍射对镀层的物相进行了分析,用扫描电镜和能谱分析技术对复合镀层的化学成分、显微形态以及生长方式进行了检测和观察。结果表明：金刚石表面Ni-P镀层呈银白色,镀层致密而且均匀;镀层与金刚石结合良好,镀层的厚度为4-6μm;Ni和P共存于复合镀层中,其中,Ni含量为13.19wt%并且为非晶态,经热处理加热后,镀层Ni和P反应形成Ni3P,转变为晶体结构;Ni-P复合镀层的生长方式有两种：一种是片层式长大,一种是凸球式长大。In order to prolong the service life of the diamond tools, the question must be solved that the diamonds usually fall off from the diamond tools. In this paper, Ni - P composite coating was applied on diamond surface by chemical plating. In this way, the bonding state between the diamond and matrix material can be improved. XRD was used to analyze the phase of the coating. The chemical composition, micro - conformation and growth mode were examined by SEM equipped with Energy Spectroscopy Analysis. The results show that Ni - P coating on diamond surface is silvery white, dense and uniformity. The bonding between Ni - P coating and diamond is improved. The thickness of Ni - P coating is 4 - 6μm. Ni and P coexist in the coating. The Ni content is 13.19wt% and in noncrystal state in the coating. Ni3P is formed in crystalline structure after heat treatment. Two growth modes of Ni - P coating are as follows ： one is slice mode, another is bulge ball mode.

关 键 词：化学镀 金刚石 Ni-P复合镀层 

分 类 号：TQ164[化学工程—高温制品工业]