Electrodeposition of Cu-Zn alloy coatings from citrate baths containing benzotriazole and cysteine as additives

被引：46

作者：

Silva, F. L. G. ^{[1
]}

do Lago, D. C. B. ^{[1
]}

D'Elia, E. ^{[2
]}

Senna, L. F. ^{[1
]}

机构：

[1] Univ Estado Rio de Janeiro, Dept Quim Analit, BR-20559013 Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, Dept Quim Inorgan, BR-21941909 Rio De Janeiro, Brazil

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2010年 / 40卷 / 11期

关键词：

Electrodeposition; Citrate bath; Additives; Cu-Zn alloys; DEPOSITION PARAMETERS; COPPER; BRASS; ZINC;

D O I：

10.1007/s10800-010-0181-z

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Alternative electrolytes, such as citrate baths, are now studied, aiming to reduce the toxicity and the cost of the electroplating process while maintaining the decorative qualities and anticorrosive properties of the coatings. For this purpose, brightening and/or leveling compounds are usually added to the base citrate bath. In this work, Cu-Zn alloys were electroplated on mild steel substrates from electrolytes containing sodium citrate and additives (benzotriazole and cysteine) at constant stirring speed. The results showed that coatings produced from baths containing additives were brighter than those obtained from the base citrate bath. Additionally, the presence of benzotriazole directly influenced the coating composition and the properties of the deposited alloy: the amount of zinc in this coating increased excessively, and the coating/substrate corrosion presented a poor anticorrosive performance.

引用

页码：2013 / 2022

页数：10

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