Experimental Investigation of the Inhibiting Action of Adenine on the Corrosion of Mild Steel in Acidic Environments

Habibat Momoh-Yahaya, Nnabuk O. Eddy, Johnson F. Iyun, Casmir E. Gimba, Emeka E. Oguzie

Abstract


Corrosion inhibition of mild steel by adenine (AD) in 0.1 M  solutions of HCl and H2SO4 was investigated using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy techniques. The study was carried out at 30  °C and 60 °C respectively. The effect of iodide ions on inhibition efficiency was also assessed. Results showed that AD had a moderate inhibitive effect on the acid corrosion of mild in the  order HCl > H2SO4 at 30 °C and H2SO4 > HCl at 60 °C. The presence of iodide ions in the acid media increased the efficiency of AD. From potentiodynamic polarization studies, it was observed that AD alone and the mixture of AD+KI surpressed both the anodic and cathodic partial reactions. The corrosion processes were inhibited by adsorption of AD onto the mild steel surface in a concentration and temperature-dependent manner. Langmuir isotherm was used to explain the adsorptive characteristics of AD.


Full Text: PDF DOI: 10.5539/jmsr.v2n1p59

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

Journal of Materials Science Research   ISSN 1927-0585 (Print)   ISSN 1927-0593 (Online)

Copyright © Canadian Center of Science and Education

To make sure that you can receive messages from us, please add the 'ccsenet.org' domain to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', check your 'bulk mail' or 'junk mail' folders.

------------------------------------------------------------------------------------------------------------------------------

images_120. proquest_logo_120 doaj_logo_new_120