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首页> 外文期刊>Surface & Coatings Technology >Electrochemical studies of Zn-Ni alloy coatings from non-cyanide alkaline bath containing tartrate as complexing agent
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Electrochemical studies of Zn-Ni alloy coatings from non-cyanide alkaline bath containing tartrate as complexing agent

机译：酒石酸盐为络合剂的无氰碱性浴对锌镍合金涂层的电化学研究

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The Zn-Ni alloys have been electro-deposited from a non-cyanide alkaline bath containing tartrate as a complexing agent for Ni2+ ions. A water soluble polymer is used as a brightener. It was prepared by the reaction of epiclorohydrin with hexamethylenetetramine and mercaptobenzimidazol. Its effect on co-deposition process was examined. It was found that adding brightener in plating bath has a great effect on the cyclic voltammogram and galvanostatic measurements during the electrodeposition. Under the examined conditions, the electrodeposition of the alloys was of anomalous type. X-ray diffraction measurements revealed that the alloys consisted delta-phase (Ni3Zn22). The composition and morphology of the deposits were also studied by using scanning electron microscopy (SEM) and energy dispersive analysis X-ray (EDAX), respectively. The effect of optimum plating bath conditions on the corrosion resistance is studied by Tafel polarization. (C) 2007 Elsevier B.V. All rights reserved.
机译：Zn-Ni合金是从含有酒石酸盐作为Ni2 +离子络合剂的非氰化物碱性浴中进行电沉积的。水溶性聚合物用作增白剂。它是通过表氯醇与六亚甲基四胺和巯基苯并咪唑的反应制备的。研究了其对共沉积过程的影响。已发现在电镀液中添加增白剂对电沉积过程中的循环伏安图和恒电流测量有很大影响。在检查的条件下，合金的电沉积是异常类型的。 X射线衍射测量表明该合金由δ相（Ni3Zn22）组成。还分别使用扫描电子显微镜（SEM）和能量色散分析X射线（EDAX）研究了沉积物的组成和形态。通过Tafel极化研究了最佳镀液条件对耐蚀性的影响。 （C）2007 Elsevier B.V.保留所有权利。

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