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Influence of current density and temperature in the zinc electroplating process at sulfate-based acid solution: study on process efficiency and coating morphology

G. A. C. Gonçalves, P. M. S. Campos

2021ptzincelectrodepositionelectroplatingsulfateefficiency

Abstract

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Zinc as a metallic coating is a common strategy to protect carbon steel against corrosion. The objective of this study was to evaluate the influence of current density and temperature on the efficiency of the zinc electroplating process in a sulfate-based acid solution. The methodology involved varying the current density from 7.5 mA.cm -2 to 30.5 mA.cm-2 and the temperature from 40 °C to 60 °C, while measuring the current efficiency and analyzing the coating morphology using optical microscopy (OM) and scanning electron microscopy (SEM). The results showed that varying the bath temperature did not significantly impact the current efficiency, which remained consistently above 95% across all temperatures evaluated. Conversely, increasing the current density resulted in improved current efficiency, which escalated from (85 ± 2)% at 7.5 mA.cm -2 to (92 ± 2)% at 19.0 mA.cm -2, and reached (95 ± 1)% at 30.5 mA.cm-2. The morphological analysis revealed distinct structural features correlated with the variations in current density, contributing valuable insights into optimizing the electroplating process.

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Cite This Work

@article{59933c5a-bf5d-4e16-89a5-cbac88f67a81,
  title={Influence of current density and temperature in the zinc electroplating process at sulfate-based acid solution: study on process efficiency and coating morphology},
  author={G. A. C. Gonçalves and P. M. S. Campos},
  year={2021},
  language={pt}
}
TY  - JOUR
TI  - Influence of current density and temperature in the zinc electroplating process at sulfate-based acid solution: study on process efficiency and coating morphology
AU  - G. A. C. Gonçalves
AU  - P. M. S. Campos
PY  - 2021
LA  - pt
ER  -

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