Experimental study on corrosion inhibition of 304 SS in acid solution

S. Divakara Shetty, Ramdev Herle, Nagaraja Shetty

Research output: Contribution to journalArticlepeer-review


Inhibition is one of the mechanisms used for preventing acid corrosion of metals and alloys. The present work focus on investigating the inhibiting effect of N-furfuryl-Nl-phenyl thiourea (FPTU) on the corrosion of 304 SS in 1M HCl solution using the Tafel extrapolation and electrochemical impedance spectroscopy (EIS) techniques. The study reveals that FPTU acts as a mixed inhibitor, and good inhibition efficiency (> 92%) is observed even at elevated temperatures. The study also reveals that FPTU physically adsorbed on the steel surface, and abeys Temkin’s adsorption isotherm. It is evident from the study that the results of the Tafel extrapolation method and electrochemical impedance technique, obtained for the corrosion of 304 SS are in good accord. Since the compound investigated is highly effective in the range of temperatures and concentrations studied, it can be effectively used as inhibitor for mitigating the corrosion of steel in HCl medium.

Original languageEnglish
Pages (from-to)12892-12898
Number of pages7
JournalInternational Journal of Applied Engineering Research
Issue number22
Publication statusPublished - 01-01-2017

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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