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Corrosion of Aluminium Alloy in Seawater and Development of Green Corrosion Inhibitor for Marine Applications
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Author(s): Wan Mohd Norsanni Wan Nik (University Malaysia Terengganu, Malaysia), Oladokun Sulaiman Olanrewaju (University Malaysia Terengganu, Malaysia), F. R. Zulkifli (University Malaysia Terengganu, Malaysia), M. F. Ahmad (University Malaysia Terengganu, Malaysia)and R. Rosliza (TATi University College, Malaysia)
Copyright: 2014
Pages: 11
Source title:
Marine Technology and Sustainable Development: Green Innovations
Source Author(s)/Editor(s): Oladokun Sulaiman Olanrewaju (University Malaysia Terengganu, Malaysia), Abdul Hamid Saharuddin (University Malaysia Terengganu, Malaysia), Ab Saman Ab Kader (Universiti Teknologi Malaysia, Malaysia)and Wan Mohd Norsani Wan Nik (University Malaysia Terengganu, Malaysia)
DOI: 10.4018/978-1-4666-4317-8.ch009
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Abstract
Aluminium and its alloys are widely used in marine applications. Recently many studies are being carried out to use natural resources as natural corrosion inhibitors. In the present study, the aluminium alloys were tested for their corrosion performance in seawater containing a natural product as a corrosion inhibitor at room temperature. The effect of honey on the corrosion of AA6064 was researched using the weight loss, potentiodynamic polarization, and SEM methods. Electrochemical measurements and metallurgical characteristics have been made to quantify the potential of honey to be used to retard metal corrosion. Surface morphology of aluminium coupon after exposure was examined by Scanning Electron Microscopy (SEM). A good inhibition efficiency is observed which increases with an increase in inhibitor efficiency. Polarization plots indicate that honey acts as a natural corrosion inhibitor, preventing the alloys from suffering severe pitting attacks. The weight loss results show low corrosion rates for the alloy in higher honey content.
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