Aluminum Alloy as Sacrificial Anode for Corrosion Protection: A Review

Volume: 11 | Issue: 2 | Year 2025 | Subscription
International Journal of Metallurgy and Alloys
Received Date: 10/20/2025
Acceptance Date: 10/24/2025
Published On: 2025-10-30
First Page: 1
Last Page: 13

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https://doi.org/10.37628/ijma.v11i2.21986

By: Tushal Kyada, Sonam Patel, Alan Babu, Saad Lulaniya, and Tirth Rakholiya.

1Lecturer, Department of Metallurgy, Dr. S. & S. S. Ghandhy College of Engineering & Technology, Surat, Gujarat, India.
2Student, Department of Metallurgy, Dr. S. & S. S. Ghandhy College of Engineering & Technology, Surat, Gujarat, India.

Abstract

Aluminum sacrificial anodes are widely used for cathodic protection in marine, offshore, and energy applications due to their light weight, high current efficiency, and favorable electrochemical potential. Pure aluminum, however, rapidly passivates in seawater, reducing protective performance. Alloying with elements, such as zinc, indium, gallium, tin, and bismuth, improves activation, ensures uniform dissolution, and stabilizes long-term behavior. This review examines the influence of alloying elements on electrochemical performance, microstructure, and mechanical properties, highlighting correlations between intermetallic formation, grain refinement, and anodic efficiency. Experimental studies, including electrochemical testing, weight-loss measurements, and field trials, demonstrate the advantages of optimized aluminum alloys over traditional zinc and magnesium anodes. Applications in ships, offshore platforms, pipelines, storage tanks, and renewable energy systems are discussed, emphasizing the importance of tailored alloy design for reliable and long-lasting protection. Finally, key research gaps are identified, underscoring opportunities for environmentally sustainable alloy development, advanced microstructural engineering, and extended field validation to enhance anode performance in diverse corrosive environments.

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How to cite this article: Tushal Kyada, Sonam Patel, Alan Babu, Saad Lulaniya, and Tirth Rakholiya Aluminum Alloy as Sacrificial Anode for Corrosion Protection: A Review. International Journal of Metallurgy and Alloys. 2025; 11(2): 1-13p.

How to cite this URL: Tushal Kyada, Sonam Patel, Alan Babu, Saad Lulaniya, and Tirth Rakholiya, Aluminum Alloy as Sacrificial Anode for Corrosion Protection: A Review. International Journal of Metallurgy and Alloys. 2025; 11(2): 1-13p. Available from:https://journalspub.com/publication/uncategorized/article=21986

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