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Efficiency comparison of some natural products on corrosion inhibition of Al-Mg-Si alloy

Rosliza, R. and Wan Nik, W. B. and Sudin, Izman (2011) Efficiency comparison of some natural products on corrosion inhibition of Al-Mg-Si alloy. In: Advanced Materials Research. Trans Tech Publications, Germany, pp. 1206-1209. ISBN 978-303785238-5

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/AMR.3...

Abstract

The comparison of the efficiency of some natural products (natural honey, vanillin and tapioca starch) on corrosion inhibition of Al-Mg-Si alloy is investigated in seawater solution at room temperature, using potentiodynamic polarization (PP), linear polarization resistance (LPR), and electrochemical impedance spectroscopy (EIS) measurements. The evolution of the corrosion potential (Ecorr) and corrosion current density (icorr) obtained from Tafel extrapolation of polarization curves, and the polarization resistance (Rp) values determined from LPR and EIS measurements indicate that the corrosion rates of Al-Mg-Si alloy decrease with the increasing the natural products concentration. In all cases, the increasing order of inhibition efficiency is: Natural honey < Vanillin < Tapioca starch.

Item Type:Book Section
Uncontrolled Keywords:Al-Mg-Si alloy, EDS, inhibition efficiency, natural products
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:29652
Deposited By: Liza Porijo
Deposited On:21 Mar 2013 06:18
Last Modified:04 Feb 2017 08:44

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