Mechanistic insights into the corrosion inhibition of mild steel by eco-benign Asphodelus Tenuifolius aerial extract in acidic environment: Electrochemical and computational analysis
- Authors
- Thakur, Abhinay; Dagdag, O.; Berisha, Avni; Ebenso, Eno E.; Kumar, Ashish; Sharma, Shveta; Ganjoo, Richika; Assad, Humira
- Issue Date
- Mar-2024
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Mild steel; Corrosion; Eco-benign extract; Inhibition; Asphodelus Tenuifolius; MDS
- Citation
- SURFACE & COATINGS TECHNOLOGY, v.480
- Journal Title
- SURFACE & COATINGS TECHNOLOGY
- Volume
- 480
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/91506
- DOI
- 10.1016/j.surfcoat.2024.130568
- ISSN
- 0257-8972
1879-3347
- Abstract
- This study explores the novel application of Asphodelus Tenuifolius aerial extract (ATAE) as a corrosion inhibitor for mild steel in a 0.5 M HCl acidic environment. By utilizing techniques such as electrochemical measurements, gravimetric analysis, SEM, and CA assessments, the inhibitory potential of ATAE has been comprehensively evaluated. The results revealed a concentration -dependent enhancement in corrosion resistance, classifying ATAE as a mixed -type inhibitor by measuring the anodic ( beta a ) and cathodic ( beta c ) polarization slope values of 108.89 and -129.33 mV/dec. The peak inhibition efficiency was observed at 250 ppm, reaching an impressive IE % of 94.40 % at 298 K (Kelvin). The electrochemical analysis demonstrated a significant increase in charge transfer resistance (R ct ) and polarization resistance (R p ) values, coupled with a decrease in Constant Phase Element (CPE.Y o ) value to 162.94 mu F, indicating heightened corrosion inhibition potential. Additionally, Theoretical calculations emphasized a strong interaction between ATAE and mild steel surface, characterized by a low energy gap ( Delta E), indicating excellent anti -corrosion abilities at the micro -level. This study positions ATAE as a promising corrosion inhibitor, offering insights for further research in corrosion prevention strategies using a sustainable corrosion inhibitor.
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