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- Title
A Study on the Inhibition of Copper Corrosion in Sulphuric Acid by Aqueous Extract of Leaves of Morinda tinctoria.
- Authors
Krishnaveni, K.; Ravichandran, J.
- Abstract
The corrosion of copper in 0.25 M sulphuric acid was studied by the addition of aqueous extract of leaves of Morinda tinctoria using weight loss and electrochemical methods. The addition of inhibitor moderately improves the inhibition efficiency. Increase in temperature and acid concentration decreases the performance of the inhibitor. The adsorption of the inhibitor on the copper surface in sulphuric acid medium obeys Freundlich isotherm. The AC impedance studies reveal that the process of inhibition is through charge transfer reaction, and polarization studies indicate the mixed nature of the inhibitor.
- Subjects
COPPER corrosion; MORINDA; PLANT extracts; SULFURIC acid; ADSORPTION (Chemistry); PREVENTION
- Publication
Journal of Failure Analysis & Prevention, 2015, Vol 15, Issue 5, p711
- ISSN
1547-7029
- Publication type
Article
- DOI
10.1007/s11668-015-0002-0