Investigate the Corrosion Inhibitive Ability of Caffeine for CT3 Steel in 1M HCl Solution by EIS Technique
Main Article Content
Abstract
Abstract: Corrosion inhibition of mild carbon steel, CT3 in hydrochloric acid by caffeine (with different concentrations, from 0.01g/l to 3.00g/l) was investigated at room temperatures using weight loss and electrochemical impedance spectroscopy (EIS) technique. Experiment result under two methods has good coincidence and shows that: as the concentration of caffeine increases, the inhibition efficiency increases. Caffeine is found to be an excellent inhibitor for steel alloys with an efficiency reaching 90 % at 3.00g/l of inhibitor concentration. When the trial period lasting up to 10 days, %IE decreased slightly but relatively stable.
Keywords: Caffeine, CT3 steel, corrosion inhibitor, adsorption.
References
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[5] Fernando Sílvio de Souza, Cristiano Giacomelli, Reinaldo Simões Gonçalves, Almir SpinellI, (2012),, “Adsorption behavior of caffeine as a green corrosion inhibitor for copper”, Materials Science and Engineering: C, Volume 32, Issue 8, pp 2436–2444.
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