Open AccessAnalyses of the Gravimetric and Electrochemical Effects of C16H13N3O3 on Mild Steel Corrosion in 0.5 M H2SO4
Author(s) -
Francis Odikpo Edoziuno,
B.U. Odoni,
Adeolu Adesoji Adediran,
Joshua Olusegun Okeniyi,
Esther T. Akinlabi
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1378/3/032064
Subject(s) - gravimetric analysis , corrosion , electrochemistry , materials science , nuclear chemistry , metallurgy , analytical chemistry (journal) , chemistry , chromatography , electrode , organic chemistry
This study analyzed the gravimetric and electrochemical effects of C 16 H 13 N 3 O 3 (methyl-5-benzoyl-2-benzimidazole carbamate: Mebendazole) on mild steel corrosion in 0.5 M H 2 SO 4 , 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 C 16 H 13 N 3 O 3 concentrations mixed in the 0.5 M H 2 SO 4 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 C 16 H 13 N 3 O 3 concentrations in 0.5 M H 2 SO 4 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 C 16 H 13 N 3 O 3 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 .