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Effect of pH Values on the Characterization of Electrodeposited Zn–Mn Coatings in Chloride-Based Acidic Environment

Metin Bedir, Derya Korkmaz

2015enelectrodepositioncorrosionzn-mnpHcoatings

Abstract

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This study investigates the effect of processing pH on the structure and corrosion resistance of Zn-Mn coatings deposited on AISI 4140 high tensile steel using a potentiostatic technique in chlorine-based sulfate baths at a constant potential of -2 V. Various characterization methods, including X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX), were utilized to analyze the structural properties of the coatings. Additionally, electrochemical techniques such as cyclic voltammetry (CV) and linear sweep voltammetry (LSV) were employed to identify the potential ranges associated with different redox processes occurring on the coated surface. The corrosion resistance of the coatings was quantitatively assessed by calculating the general corrosion rate using parameters such as linear polarization resistance (LPR), corrosion current (Icorr), and Tafel slopes. The findings indicate notable variations in the corrosion behavior of the Zn-Mn coatings with respect to different pH levels, contributing to a deeper understanding of the optimal conditions for enhancing the corrosion protection of ferrous materials in aggressive environments.

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Cite This Work

@article{637cf4a8-6612-4d6c-ae01-603600809fb0,
  title={Effect of pH Values on the Characterization of Electrodeposited Zn–Mn Coatings in Chloride-Based Acidic Environment},
  author={Metin Bedir and Derya Korkmaz},
  year={2015},
  language={en}
}
TY  - JOUR
TI  - Effect of pH Values on the Characterization of Electrodeposited Zn–Mn Coatings in Chloride-Based Acidic Environment
AU  - Metin Bedir
AU  - Derya Korkmaz
PY  - 2015
LA  - en
ER  -

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