金刚石化学镀镍的研究  

Study of Electroless Plating Nickel on the Diamond

作　　者：黄世玲[1] 张迎九[1] 杨德林[1] 

机构地区：[1]郑州大学,郑州450000

出　　处：《表面技术》2015年第6期65-69,81,共6页Surface Technology

摘　　要：目的增强金刚石与基体的结合强度。方法采用"除油—粗化—敏化活化—解胶"的方法对金刚石进行预处理,通过化学镀镍方法对金刚石进行表面改性,结合扫描电子显微镜及X射线能谱仪研究不同参数对化学镀镍层的影响。结果在粒度为10μm左右的金刚石表面镀覆致密镍层的最佳工艺参数为:Ni SO4·6H2O(主盐)25 g/L,次亚磷酸钠30 g/L,乳酸15 g/L,乙酸钠15 g/L,稳定剂20 mg/L,光亮剂1 g/L,p H=5.5,温度85℃。结论次亚磷酸钠含量、硫脲含量、p H值、温度对镀覆时间、金刚石增重比及镀层形貌有影响,以最佳工艺参数获得的金刚石镍镀层包覆完整均匀,质量较好。Objective To enhance the bonding strength between the diamond and the substrate. Methods The diamond was pre-treated with a method of＂degreasing-roughening-sensitizing activation-glue＂, and then surface was modified by electroless nickel plating on the diamond. The influence of different parameters on chemical plated nickel layer was studied by scanning elec-tron microscopy and energy dispersive X-ray. Results The optimum technical parameters of nickel layer on the diamond about 10 microns：NiSO4·6H2O （main salt） 25 g/L, hypophosphite 30 g/L, lactic acid 15 g/L, sodium acetate 15 g/L, the stabilizer 20 mg/L, brightener 1 g/L, pH=5. 5, temperature 85 ℃. Conclusion Hypophosphite content, thiourea content, pH, and tempera-ture may affects the plating time, the diamond coating weight gain ratio and morphology of chemical nickel. The diamond was coa-ted complete uniform with the optimal parameters.

关 键 词：化学镀镍 金刚石 镀覆时间 增重比 镀层形貌 

分 类 号：TQ153.1[化学工程—电化学工业]