Study on the behavior of Zn–Fe alloy electroplating

The electroplating behavior of Zn, Fe and Zn–Fe alloy onto copper from light acid chloride solutions (LACS, pH 3.07 containing H 3BO 3, Na 2C 6H 5O 7·2H 2O and different amounts of Zn 2+ and Fe 2+) was investigated by means of cyclic voltammetry and the steady-state polarization technique. It was fo...

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Bibliographic Details
Published in:Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2001-12, Vol.516 (1), p.127-130
Main Authors: Zhang, Z., Leng, W.H., Shao, H.B., Zhang, J.Q., Wang, J.M., Cao, C.N.
Format: Article
Language:English
Subjects:
Anomalous co-deposition
Applied sciences
Exact sciences and technology
Mechanism
Metallic coatings
Metals. Metallurgy
Production techniques
Surface treatment
Zn–Fe alloy
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Summary:The electroplating behavior of Zn, Fe and Zn–Fe alloy onto copper from light acid chloride solutions (LACS, pH 3.07 containing H 3BO 3, Na 2C 6H 5O 7·2H 2O and different amounts of Zn 2+ and Fe 2+) was investigated by means of cyclic voltammetry and the steady-state polarization technique. It was found that, in the experimental conditions, during the Zn–Fe alloy formation no underpotential deposition (upd) was observed, and the deposition of Zn–Fe followed the mechanism of three-dimensional (3-D) nucleation and subsequent grain growth. The Zn 2+ ions in the electrolyte inhibit the deposition of Fe, while Fe 2+ ions promote the deposition of Zn. It was also found experimentally that the co-deposition of Zn and Fe behaved anomalously, and the result was interpreted theoretically in the light of quantum chemistry.
ISSN:1572-6657
1873-2569
DOI:10.1016/S0022-0728(01)00665-9