Electrodeposition behavior of zinc–nickel–iron alloys from sulfate bath |
| |
Authors: | M M Abou-Krisha F H Assaf S A El-Naby |
| |
Affiliation: | (1) Faculty of Science, Chemistry Department, South Valley University, Qena, 83523, Egypt |
| |
Abstract: | The present work is directed at collecting the properties of Zn–Ni and Zn–Fe alloys in one alloy via the electrodeposition
of Zn–Ni–Fe ternary alloy. Electrodeposition of ternary Zn–Ni–Fe alloy was investigated and compared with the characteristics
of Zn–Ni electrodeposits. The electrodeposition was performed from a sulfate bath onto a steel substrate. Structural analysis
by X-ray diffraction (XRD) method revealed that the Zn–Ni–Fe alloys consisted of a mixture of zinc, and (γ-Ni2Zn11) and (Fe3Ni2) phases. The study was carried out using electrochemical methods such as cyclic voltammetry and galvanostatic for electrodeposition,
while anodic linear polarization resistance and anodic linear sweeping voltammetry techniques were used for the corrosion
study. Surface morphology and chemical composition of the deposits were also examined by using scanning electron microscopy
and atomic absorption spectroscopy, respectively. It was found that the obtained Zn–Ni–Fe alloy exhibited more preferred surface
appearance and better corrosion resistance without adding any organic brighteners to the plating bath in comparison to Zn–Ni
alloy that electrodeposited at similar conditions. Results obtained revealed that the increase in corrosion resistance of
ternary deposits is not only attributed to the formation of (γ-Ni2Zn11) phase, but also to iron codeposition and formation of (Fe3Ni2) phase. |
| |
Keywords: | Electrodeposition Phase structure Surface morphology Corrosion resistance Ternary Zn– Ni– Fe alloy |
本文献已被 SpringerLink 等数据库收录! |
|