A STUDY ON THE LOCALIZED CORROSION INHIBITION FOR MILD STEEL IN SALINE SOLUTION

Authors

  • Nguyen Dang Nam PetroVietnam University
  • Pham Van Hien Bach Khoa Uni
  • Mahesh Vaka Deakin Uni

DOI:

https://doi.org/10.15625/2525-2518/56/2/10599

Keywords:

mild steel, localized corrosion inhibition, electrochemical techniques, surface analysis, wire beam electrode.

Abstract

In this study, 0.45 mM yttrium 4-nitrocinnamate (Y(4NO2Cin)3) embedded in various aqueous chloride solutions, which has been studied as a possible localized corrosion inhibition system using electrochemical techniques and surface analysis. Furthermore, a wire-beam electrode (WBE) exposed to NaCl solutions containing Y(4NO2Cin)3 compound. The results indicated the possible application of a WBE in simulating and monitoring the localized corrosion inhibition. Moreover, Y(4NO2Cin)3 compound showed an excellent localized corrosion inhibition at 0.01 M due to high inhibition performance and good protective film formation. It also indicated that addition of 0.45 mM Y(4NO2Cin)3 compound increased the localized corrosion inhibition with a decrease of the Clˉ ion concentration in the investigated solutions. A new method of localized corrosion inhibition estimation has been developed using a WBE which shows a consistent result with electrochemical and surface analysis data. In addition, other electrochemical techniques and surface analysis are also used for not only ensuring but also confirming the localized corrosion inhibition.

 

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Author Biography

Nguyen Dang Nam, PetroVietnam University

Materials Science, Electrochemistry - Corrosion, Corrosion Inhibitors, Stress Corrosion Cracking, Metallurgy, Microstructure

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Published

2018-04-12

Issue

Section

Materials