Analyses of the Gravimetric and Electrochemical Effects of C16H13N3O3 on Mild Steel Corrosion in 0.5 M H2SO4

Francis O. Edoziuno, Benjamin U. Odoni, Adeolu A. Adediran, Joshua O. Okeniyi, Esther T. Akinlabi

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)

Abstract

This study analyzed the gravimetric and electrochemical effects of C16H13N3O3 (methyl-5-benzoyl-2-benzimidazole carbamate: Mebendazole) on mild steel corrosion in 0.5 M H2SO4, for gaining insights on correlation and significance of differences between the two corrosion-monitoring techniques. For the gravimetric method, weight loss of mild steel specimens immersed in different C16H13N3O3 concentrations mixed in the 0.5 M H2SO4 were obtained for corrosion rates and inhibition efficiencies estimations. For the electrochemical approach, mild steel samples were subjected to potentiodynamic polarization experiments in the different C16H13N3O3 concentrations in 0.5 M H2SO4 that were employed for the gravimetric technique for obtaining instrumental readout of corrosion rate. Results showed that the corrosion rate from the electrochemical experiments exhibited excellent linear correlation (R = 99.91; Nash-Sutcliffe Efficiency = 99.83) with the dataset obtained from the gravimetric corrosion assessments. Both the gravimetric and electrochemical monitoring of mild steel corrosion gave inhibition efficiencies, η > 90%, by the different C16H13N3O3 concentrations for the study. Also, homeoscedastic and heteroscedastic student's t-test statistics indicated that the differences between the corrosion inhibition efficiencies from the electrochemical and gravimetric techniques were not significant, p-value = 0.9729, but significant for their corrosion rates: 1.52 × 10-6 > p-value > 8.15 × 10-9.

Original languageEnglish
Article number032064
JournalJournal of Physics: Conference Series
Volume1378
Issue number3
DOIs
Publication statusPublished - 18 Dec 2019
Event3rd International Conference on Engineering for Sustainable World, ICESW 2019 - Ota, Nigeria
Duration: 3 Jul 20198 Jul 2019

Keywords

  • CHNO (Mebendazole)
  • Mild steel
  • corrosion inhibition efficiency
  • corrosion inhibitor
  • gravimetric and electrochemical corrosion-monitoring techniques

ASJC Scopus subject areas

  • General Physics and Astronomy

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