Abstract-The initial corrosion rates of electrodeposited Zn-Ni coating under galvanostatic conditions are closely related to the current density. The NH4Cl 12-14 wt% Ni coating showed better corrosion resistance than those of the other investigated coatings due to the lower Ni content of 9 wt%. Moreover, nodular granules closely packed with capillary fissures, along with the formation of the electrochemically noble γ-Ni5Zn21 phase, were observed at the highest Ni concentration of 10 wt%. The results of electrochemical characterization on the copper substrate showed an extended testing time, indicating a nobler corrosion potential. Additionally, the grain size refines with the presence of NH4Cl, and the increase in cathodic current density can also lead to a decrease in grain size. The experimental results indicate that Zn-Ni alloy coatings obtained in the presence of NH4Cl exhibit favorable electrochemical properties, demonstrating a protective effect on steel substrates. However, the sacrificial effect is more pronounced when these coatings are applied on copper substrates.
Benachour, N., & Amiri, R. (2023). Influence of current density onto composition and corrosion of electrodeposited Ni–Zn alloys. Analytical and Bioanalytical Electrochemistry, 15(11), 988-1000. doi: 10.22034/abec.2023.709115
MLA
Naima Benachour; Rana Amiri. "Influence of current density onto composition and corrosion of electrodeposited Ni–Zn alloys". Analytical and Bioanalytical Electrochemistry, 15, 11, 2023, 988-1000. doi: 10.22034/abec.2023.709115
HARVARD
Benachour, N., Amiri, R. (2023). 'Influence of current density onto composition and corrosion of electrodeposited Ni–Zn alloys', Analytical and Bioanalytical Electrochemistry, 15(11), pp. 988-1000. doi: 10.22034/abec.2023.709115
VANCOUVER
Benachour, N., Amiri, R. Influence of current density onto composition and corrosion of electrodeposited Ni–Zn alloys. Analytical and Bioanalytical Electrochemistry, 2023; 15(11): 988-1000. doi: 10.22034/abec.2023.709115
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