Anti-Corrosive Performances of Environmental Friendly Materials on Al-Mg-Si Alloy

R. Rosliza; Wan Nik Wan Mohd Norsani; S. Izman

doi:10.4028/www.scientific.net/AMR.1025-1026.668

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A Fundamental Study on the Processing of Heavy Metals Contained in Underground Water by Composite Modulation Electromagnetic Field Processing
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Anti-Corrosive Performances of Environmental Friendly Materials on Al-Mg-Si Alloy
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Anti-Corrosive Performances of Environmental Friendly Materials on Al-Mg-Si Alloy

Abstract:

The anti-corrosive performances of aluminum and its alloys is the subject of considerable technological importance due to the increased industrial applications of these materials. This paper reports the results of the linear polarization (LP) and electrochemical impedance spectroscopy (EIS) measurements on the corrosion inhibition of Al-Mg-Si alloy in seawater using natural products (natural honey, vanillin and tapioca starch) as an inhibitor. The results show that the anti-corrosive performances increases with the increasing of natural products concentration. The energy dispersive spectrometer (EDS) studies elucidated that the breakdowns of Al₂O₃ after exposed to seawater decreased with the presence of natural products. In all cases, the anti-corrosive performances can be given in the following increasing order: Natural honey < Vanillin < Tapioca starch.