Impedance spectroscopy study of inhibitive properties of quaternary ammonium salts
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2014-01-01
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Abstract
Two quaternary ammonium di-bromides were investigated as corrosion inhibitors of mild steel in 1M HCl using impedance spectroscopy. Equivalent structure model of the interface metal/1M HCl+inhibitor was presented to describe the process. Independently the polarisation resistance was measured as well and compared with impedance data. Good agreement was found. Both investigated compounds show very good inhibitive properties.