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Vol. 35 No. 3 (2023): Vol 35 Issue 3, 2023

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Enhancement of Interfacial Wettability between Al-Zn Alloy Matrix and MnO2 Decorated with Ni for Effective Cathodic Protection Systems

https://doi.org/10.14233/ajchem.2023.26890
Sunil Jacob
Department of Chemistry, Catholicate College Pathanamthita (Affiliated to Mahatma Gandhi University), Kottayam-689645, India
K.K. Binoj
Department of Chemistry, Catholicate College Pathanamthita (Affiliated to Mahatma Gandhi University), Kottayam-689645, India
Dona Benny
Department of Physics, Madras Christian College, Chennai-600059, India
P.Y. Jinu
Department of Chemistry, Catholicate College Pathanamthita (Affiliated to Mahatma Gandhi University), Kottayam-689645, India

Corresponding Author(s) : Sunil Jacob

suniljacob07@gmail.com

Asian Journal of Chemistry, Vol. 35 No. 3 (2023): Vol 35 Issue 3, 2023

Abstract

Substrates made of steel used in coastal applications are regularly exposed to harsh salty environments; as a result, it is essential to adopt reliable strategies for preventing corrosion. Utilization of aluminum rich sacrificial anodes is an efficient anticorrosive technique owing to its high columbic amplitude, low density, inherent negative potential and galvanic economy. In this work, the electrochemical and micro-structural was characterized by catalytic effect of MnO2-Ni on anode activation. MnO2-Ni present in anode matrix results in destroyed passive alumina film and facilitates the galvanic growth on an anode. The anode exhibited active operating potential and high columbic efficiency during prolonged marine exposure studies. High anodic efficacy was performed by fine tuning composites into the metal matrix Al based alloy. The results revealed that the preferential dissolution of intermetallic particles induced effective sacrificial anode action.

Keywords

Aluminium Corrosion Sacrificial anode Weight loss Cathodic protection
Jacob, S., Binoj, K., Benny, D., & Jinu, P. (2023). Enhancement of Interfacial Wettability between Al-Zn Alloy Matrix and MnO2 Decorated with Ni for Effective Cathodic Protection Systems. Asian Journal of Chemistry, 35(3), 540–546. https://doi.org/10.14233/ajchem.2023.26890
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