Title: Inhibition of galvanic corrosion by 4-amino-5-phenyl-4H-1, 2, 4-trizole-3-thiol

Authors: Ahmed Y. Musa, Abdul Amir H. Kadhum, Mohd Sobri Takriff, Abu Bakar Mohamad

Addresses: Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia. ' Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia. ' Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia. ' Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia

Abstract: Inhibition of galvanic corrosion was carried out using 4-amino-5-phenyl-4H-1, 2, 4-trizole-3-thiol (APTT) as corrosion inhibitor. The couple metals were aluminium alloy (Al2024) and mild steel. The galvanic potential and the galvanic current were measured in absence and presence of 0.4 mM of APTT. FT-IR was used to characterise the adsorbed inhibitor film technique. The result showed that the galvanic current was reduced from 286 to 8.9 μA cm⁻² with addition of APTT. FTIR result confirmed the adsorption of APTT on mild steel surface.

Keywords: galvanic corrosion; corrosion inhibitors; zero resistance ammeter; ZRA; Fourier transform infrared; FTIR; APTT; aluminium alloys; mild steel; galvanic potential; galvanic current.

DOI: 10.1504/IJSURFSE.2011.041404

International Journal of Surface Science and Engineering, 2011 Vol.5 No.2/3, pp.226 - 231

Published online: 14 Oct 2014 *

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