Corrosion Behavior and Inhibition
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Abstract
Abstract
The inhibitive effect of methyl-1H-benzotriazole (Me-BTA) on pure aluminum was investigated in fluoride-sulphate media at different sulphate concentrations. The corrosion rate, surface roughness, surface morphology and elemental composition of aluminum were evaluated after 24 h of immersion at 80 ºC in deaerated fluoride-sulphate solutions both with and without Me-BTA. Weight-loss measurements showed that the addition of Me-BTA decreased the corrosion rate of aluminum under the investigated conditions. AFM analysis further revealed a reduction in the surface roughness of the aluminum specimens in the presence of Me-BTA, indicating a less damaged surface after exposure to the aggressive medium. SEM analysis revealed fewer corrosion-related surface products on the Me-BTA-treated specimens than on the uninhibited aluminum. EDX further detected nitrogen and increased carbon content after treatment, consistent with the presence of Me-BTA-derived species on the surface. These surface and elemental changes support the protective role of Me-BTA and the formation of an inhibitor-derived layer on aluminum in the investigated deaerated fluoride-sulphate media.
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@article{Alam2026Corrosion,
title = {Corrosion Inhibition of Aluminum using Methyl-1H-Benzotriazole in Deaerated Fluoride-Sulphate Media: Corrosion Behaviour and Surface Protection},
author = {Md. Ashraful Alam and Aklima Jahan and Maha Mohammed Elsawy and Zainul Abedin Siddique and Dina Nasrin and Md. Kamrul Hossain and Faisal Islam Chowdhury and Hitoshi Yashiro},
journal = {Asian Journal of Chemistry},
year = {2026},
doi = {10.14233/ajchem.2026.36676},
url = {https://doi.org/10.14233/ajchem.2026.36676}
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