Anti-corrosion performance of 1, 3-benzothiazole on 410 martensitic stainless steel in H2SO4

Loto, R. T.

Surface Review and LettersĀ 24.07 (2017): 1750121.

The corrosion inhibition effect of synthesized 1, 3-enzothiazole at very low concentrations on 410 martensitic stainless steel in 3M H2SO4 solution was studied through potentiodynamic polarization and weight loss measurements. The observation showed that the organic compound performed effectively with average inhibition efficiencies of 94% and 98% at the concentrations studied from both electrochemical methods due to the inhibition action of protonated inhibitor molecules in the acid solution. The amine and aromatics functional groups of the molecules active in the corrosion inhibition reaction were exposed from Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) spectroscopic analysis. Thermodynamic calculations showed cationic adsorption to be chemisorption adsorption, obeying the Langmuir adsorption isotherm. Images from optical microscopy showed an improved morphology in comparison to images from corroded stainless steel. Severe surface deterioration and macro-pits were observed in the uninhibited samples.

Anti-corrosion-performance-of-1-3-benzothiazole-on-410-martensitic-stainless-steel-in-H2SO4

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