Verification of Deposition Mechanism of Zinc Alloys Using Non-aqueous Plating Solutions
Verification of Deposition Mechanism of Zinc Alloys Using Non-aqueous Plating Solutions
复制标题
使用非水电镀溶液验证锌合金的沉积机制
DOI：
10.2355/tetsutohagane1955.89.1_64
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
H. Fukushima
中科院分区：
文献类型：
--
作者：
Hiroaki Nakano;Shigeo Kobayashi;T. Akiyama;T. Tsuru;H. Fukushima
简介：研究了在非水溶液（甲醇和N，N二甲基甲酰胺）中Zn与铁族金属、Cr和Mn的合金电沉积行为，并与在硫酸盐水溶液中的合金电沉积行为进行了比较。结果表明：1）Zn-铁族金属和Zn-Cr合金在水溶液中的电沉积行为与非水溶液中的电沉积行为有很大的不同，其中阴极层pH值升高导致的Zn氢氧化物的形成在电沉积过程中起着重要作用。2)锌-铁-族金属合金在非水溶液中的沉积显示出正常型共沉积的典型特征，其中电化学更贵的铁-族金属沉积物优先于大多数电镀条件。3)在Zn与Cr的共沉积中，在含有80-90摩尔%的Cr 3+的非水溶液中获得约90质量%的Cr沉积物，而在水溶液中的最大Cr含量为约40质量%。4)由于Zn的氢氧化物不参与水溶液中Zn和Mn的共沉积，因此Zn-Mn合金在非水溶液中的沉积行为与在水溶液中的沉积行为基本相同。
Synopsis : Electrodeposition of Zn alloys with iron-group metals, Cr and Mn was conducted in non-aqueous solutions such as methanol and N,Ndimethlyfromamide and the alloy deposition behavior was compared with that in aqueous sulfate solutions. The results obtained are described as follows: 1) The electrodeposition behavior of Zn-iron-group metals and Zn-Cr alloys, in which the formation of Zn hydroxide due to pH rise in the cathode layer plays an important role during the codeposition process in aqueous solutions, was quite different between the non-aqueous and aqueous solutions. 2) The deposition of Zn-iron-group metal alloys in the non-aqueous solutions showed the typical feature of normal type codeposition, in which electrochemically more noble iron-group metal deposits preferentially over most plating conditions. 3) In the codeposition of Zn with Cr, the deposits of about 90 mass% Cr was obtained in the non-aqueous solutions containing 80-90 mol% of Cr3+, while the maximum Cr content was about 40 mass% in aqueous solutions. 4) Since Zn hydroxide was not involved in the codeposition of Zn with Mn in aqueous solution, the deposition behavior of Zn-Mn alloy in the non-aqueous solutions was almost the same as that in aqueous solution.