Metal welding green corrosion inhibitor: A review

• Surianto¹, M. Rihotimawati¹, H. Basri¹, Alimuddin¹, A. Wahyudianto¹ and A. Fernandes²

¹ Politeknik Negeri Samarinda, Jl. DR Ciptomangunkusumo, Kampus Gunung Lipan, Samarinda, East Kalimantan, Indonesia
² Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Jl. Raya Jakarta – Bogor Km. 46, Cibinong, Kab. Bogor, West Java, 16911, Indonesia

Abstract: Welding has been a fundamental tool in the evolution of metallurgy, to combine metal components to construct structures, cars, machinery, and other products in industries. Welded metal can corrode for a variety of reasons, therefore preventing corrosion and determining the fundamental reasons are critical to resolving the issue. Corrosion of welded metal must be prevented by various methods, including the application of natural corrosion inhibitors. Corrosion inhibitors are compounds that are used during the welding process to reduce the effects of corrosion on metal surfaces. Plants extract-based corrosion inhibitors can help prolong the service life of welded metal structures and components in metal welding procedures. The plant extracts indicated below have demonstrated potential as metal welding corrosion inhibitors. Neem (Azadirachta indica) extract, aloe vera extract, and rambutan fruit peel extract have all shown promise as corrosion inhibitors in metal welding. Oleochemicals can be used as corrosion inhibitors in metal welding as bio-based coatings. iso-Undecenoic and iso-undecanoic acid based polyol esters can be utilized as corrosion inhibitors during metal welding. Oleochemical-based corrosion inhibitors are frequently preferred over traditional petroleum-based inhibitors due to their lower environmental impact. Oleochemical corrosion inhibitors are generally compatible with a wide range of metals. The review highlights the importance of corrosion prevention in metal welding and discusses the potential of plant extracts and oleochemicals as effective corrosion inhibitors.

Keywords: metal welding, corrosion, inhibitors, plant extracts, oleochemical

Int. J. Corros. Scale Inhib., 2024, 13, no. 2, 1230-1245
doi: 10.17675/2305-6894-2024-13-2-31

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