Author/Authors :
Wan Nik, W.B. Universiti Malaysia Terengganu - Faculty of Maritime Studies and Marine Science, Malaysia , Syahrullail, S. Universiti Teknologi Malaysia - Faculty of Mechanical Engineering, Malaysia , Rosliza, R. TATI University College - Faculty of Chemical Engineering Technology, Malaysia , Rahman, M.M. International Islamic University of Malaysia - Faculty of Pharmacy, Malaysia , Zulkifli, M.F.R. Universiti Malaysia Terengganu - Faculty of Maritime Studies and Marine Science, Malaysia
Abstract :
The aim of this study is to determine the corrosion effect of palm oil methyl ester (POME) on aluminium alloy 5083 (AA5083). The static immersion test was carried out at 60°C for 68 days according to ASTM G-31-72. The corrosion analysis was done by using weight loss method and electrochemical test. The result from weight loss method shows the decreasing in weight loss of AA5083 which signifies the ability of POME to reduce corrosion rate. The electrochemical test shows the decreasing in polarization resistance, Rp, while the corrosion current densities, Icorr, increase. The corrosion rate reduces from 2.250mpy to 0.1946mpy. The low concentration of fatty acid C18:2 and high anti oxidant element contributes to the reduction of corrosion rate of AA5083 in POME.
Keywords :
Aluminium alloy , corrosion , electrochemical impedance spectroscopy , palm oil methyl ester (POME) , potentiodynamic polarization , weight loss
