糖精和1,4-丁炔二醇对镀镍层形貌的影响  

Influences of Saccharin Sodium and 1,4-butynediol on Electrodeposited Nickel Coating Morphology

作　　者：兰晔峰[1] 李富斌[1] 赵文军[1] 李庆林[1] 

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃兰州730050

出　　处：《电镀与精饰》2015年第6期10-13,22,共5页Plating & Finishing

基　　金：省部共建有色金属先进加工与再利用国家重点实验室资助(No.SKL1305)

摘　　要：采用动电位扫描、扫描电子显微镜和X-射线衍射分析分别研究了不同质量浓度的糖精和1,4-丁炔二醇对镍电沉积层的极化作用、表面形貌及晶体取向的影响。结果表明:在瓦特镀镍液中加入糖精和1,4-丁炔二醇,极化曲线均向负电位方向移动。糖精质量浓度增加至2.0 g/L时,极化曲线不再向负电位方向移动,镀层呈现(200)面择优取向。当1,4-丁炔二醇质量浓度增加到0.5 g/L时,其显著提高了镍电沉积过电位230 m V,有效增大成核密度,其镀层微观形貌平整均匀,择优取向并未发生改变。The influences of different mass concentration of saccharin sodium and 1,4-butynediol on polarization performance, surface morphology and grain orientation of electrodeposited nickel coating were researched by using potentiodynamic scanning method, SEM and XRD. It was found that the saccharin sodium and 1,4-butynediol added in Watts plating solution could move the polarization curve to negative direction. When saccharin sodium mass concentration was increased to 2.0 g/L, the polarization curve would no longer move to negative direction, and the coatings would present a （200） preferred crystal orientation. When 1,4-butynediol mass concentration was increased to 0.5 g/L, the nickel electrodeposition over- potential was increased by 230 mV significantly and the nucleation density was increased effectively;the coating micro morphology was uniform and the preferred crystal orientation was not changed.

关 键 词：镍电沉积 糖精 1 4-丁炔二醇 阴极极化 

分 类 号：TQ153.2[化学工程—电化学工业]