Neha K Nambiar, D. Brindha, Parthipan Punniyakotti, B.R. Venkatraman and Subramania Angaiah
1Electro-Materials Research Laboratory, Centre for Nanoscience and Technology, Pondicherry University, Puducherry, 605014, India
2Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, India
3PG & Research Dept. of Chemistry, Periyar EVR College, Trichy, 620023, India
The corrosion inhibitive effect of Derris indica leaves extract (DILE) on aluminium in 1M NaOHis investigated at different temperatures. For this purpose, weight loss studies and electrochemical methods including Tafel polarization and electrochemical impedance spectroscopy technique (EIS) are employed. Surface analysis of the treated and untreated aluminium coupons are done by using metallurgical microscopy. About 60.2% of maximum corrosion inhibition efficiency is attained with an optimum inhibitor concentration of 1.2 g/L. Both weight loss and electrochemical studies confirmed that DILE plays a crucial role in the formation of a protective layer over metal surfaces. Also,electrochemical measurements revealed that DILE behaves as a mixed type of corrosion inhibitor. The kinetic parameters and thermodynamic parameters are calculated using Arrhenius theory and transition state theory. Langmuir adsorption isotherm was found to be the best fit and physical adsorption mechanism was proposed.
Received: 22 Jan 2021
Revised: 25 Sep 2021
Accepted: 01 Oct 2021
Published online: 04 Oct 2021
Article type:
Research Paper
DOI:
10.30919/es8d540
Volume:
17
Page:
167-175
Citation:
Engineered Science, 2022, 17, 167-175
Permissions:
Copyright
Number of downloads:
4200
Citation Information:
18
Description:
The corrosion inhibitive effect of Derris indica leaves extract (DILE) on aluminium was investigated....
The corrosion inhibitive effect of Derris indica leaves extract (DILE) on aluminium was investigated by chemical and electrochemical methods.
This article is cited by 18 publications.
This article is cited by 18 publications.
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