Corrosion Inhibition Effect of Acidic Extract of Bark of Eucalyptus Globulus on Mild Steel

Authors

  • Dipak Kumar Gupta Department of chemistry, Tri-Chandra Multiple Campus, Ghantaghar, Kathmandu, TU.
  • Laxmi Awasthi Ekata James College, Jorpati, Kathmandu
  • Anju Kumari Das Department of Chemistry, Amrit Campus, Lainchaur, Kathmandu, TU.
  • Brahamdeo Yadav R.R.M. Campus, Janakpur, TU.
  • Anita Ghimire Central Department of Chemistry, Kirtipur, TU.
  • Amar Prasad Yadav Central Department of Chemistry, Kirtipur, TU.

DOI:

https://doi.org/10.3126/tuj.v35i1.35828

Keywords:

corrosion inhibition, eucalyptus globules, green inhibitor, OCP, weight loss

Abstract

The corrosion inhibition properties of the acidic extract of Eucalyptus globulus (EG) was investigated for mild steel (MS) using the weight loss method and open circuit potential (OCP) measurement. Corrosion inhibition of MS in 0.1M HCl was studied in the absence and presence of various concentrations of the acidic extract of EG barks. The results showed an increase in corrosion inhibition with increasing concentration of the extract. The inhibition efficiency of 100% EG extract was approximately 98.0% after 24 hours immersion in the acidic solution. FTIR spectrum showed the presence of compounds containing oxygen and nitrogen functional groups responsible for forming barrier layers onto MS surface. Open circuit potential (OCP) measurements showed that the EG extract acts as a mixed type inhibitor.

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Author Biographies

Dipak Kumar Gupta, Department of chemistry, Tri-Chandra Multiple Campus, Ghantaghar, Kathmandu, TU.

Lecturer

Laxmi Awasthi, Ekata James College, Jorpati, Kathmandu

 Teacher

Anju Kumari Das, Department of Chemistry, Amrit Campus, Lainchaur, Kathmandu, TU.

Lecturer

Brahamdeo Yadav, R.R.M. Campus, Janakpur, TU.

Lecturer

Anita Ghimire, Central Department of Chemistry, Kirtipur, TU.

Professor

Amar Prasad Yadav, Central Department of Chemistry, Kirtipur, TU.

Professor

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Published

2020-06-30

How to Cite

Gupta, D. K., Awasthi, L., Das, A. K., Yadav, B., Ghimire, A., & Yadav, A. P. (2020). Corrosion Inhibition Effect of Acidic Extract of Bark of Eucalyptus Globulus on Mild Steel. Tribhuvan University Journal, 35(1), 1–10. https://doi.org/10.3126/tuj.v35i1.35828

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Articles