【作者】 戴品强； 洪春福； 项忠楠； 陈晓文；

【Author】 DAI Pin-qiang HONG Chun-fu XIANG Zhong-nan CHEN Xiao-wen (School of Materials Science and Engineering,Fuzhou University,Fuzhou,3501008,China)

【机构】 福州大学材料科学与工程学院；

【摘要】 采用可溶性阳极电刷镀制备镍镀层,XRD 分析和 TEM 观察结果表明镀层为纳米晶结构,晶粒尺寸约20nm,具有(111) 择优取向。镀镍层硬度随电刷镀电压和镀液温度的提高而增加,在一定值时达到最大值,然后随电压和镀液温度的继续提高而降低。而阴—阳极相对运动速度影响较小。低温退火时镀层的硬度随加热温度的提高而升高,300℃时达到最大值,然后随温度的升高而降低。可溶性阳极电刷镀纳米晶镍的热稳定性明显高于晶粒尺寸相近的槽镀纳米晶镍,对其原因进行初步探讨。更多还原

【Abstract】 Ni coatings were synthesized by brush plating with soluble anode Ni.The microstructure was examined by XRD and TEM. Results show that the Ni coating has a(111)textured nano-grain structure with a grain size of approximately 20nm.The hardness of the Ni coating increases first and then decreases with the increasing plating voltage and the temperature of the solution.The anode/cathode movement speed has minor influence on the hardness of the coating.The hardness of the Ni coating increases with the increasing of annealing temperature and reaches the highest value at 300℃ and then decreases with the increasing annealing temperature.The thermal stability of the nanostructured Ni coating synthesized by brush plating is much higher than that synthesized by tank plating and the underlying mechanism is discussed.更多还原