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Journal of Failure Analysis and Prevention

, Volume 18, Issue 2, pp 371–381 | Cite as

Anticorrosion Potential of Flectofenine on Mild Steel in Hydrochloric Acid Media: Experimental and Theoretical Study

  • Narayana Hebbar
  • B. M. Praveen
  • B. M. Prasanna
  • H. P. Sachin
Technical Article---Peer-Reviewed

Abstract

The inhibition effect of Flectofenine on corrosion of mild steel in 1M HCl solution was investigated by using traditional weight loss method and electrochemical techniques at different concentrations and temperatures. Adsorption of the inhibitor follows a Langmuir adsorption isotherm studied at the temperatures of 303–333 K. The change in free energy and change in enthalpy explain the mode of the adsorption. Activation energy values, apparent enthalpy changes and apparent entropy changes explain the corrosion process. The mechanism of inhibition was discussed.

Keywords

Metals Organic compounds Electrochemical measurements Inhibitor SEM 

Notes

Acknowledgments

The authors are grateful to the authorities of Srinivas School of Engineering, Mukka, Mangalore, Karnataka, India, for providing laboratory facilities. The authors also thank Department of Science and Technology, New Delhi, Government of India, under fast-track scheme for young scientist [DST: Project Sanction No. SERB/F/2231/2012-13 dated 12-07-2012] and All India council for Technical Education, New Delhi, Government of India, under MODROBS scheme [Ref. No 8024/RIFD/MOD 292 /2010-11 dated 31-03-2011 for providing instrumental facilities.

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Copyright information

© ASM International 2018

Authors and Affiliations

  • Narayana Hebbar
    • 1
  • B. M. Praveen
    • 1
  • B. M. Prasanna
    • 2
  • H. P. Sachin
    • 3
  1. 1.Department of ChemistrySrinivas School of EngineeringMukka, MangaloreIndia
  2. 2.Department of ChemistryJain Institute of TechnologyDavanagereIndia
  3. 3.Department of ChemistryJawaharlal Nehru National College of Engineering (JNNCE)ShimogaIndia

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