A study on the localized corrosion inhibition for mild steel in saline solution

Nguyen Dang Nam, Nguyen To Hoai, Pham Van Hien
Author affiliations

Authors

  • Nguyen Dang Nam Institute for Basic and Applied Research, Duy Tan University, 3 Quang Trung, Da Nang City 550000, Viet Nam
  • Nguyen To Hoai Faculty of Chemical Engineering, Bach Khoa University, VNU-HCM,268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Viet Nam
  • Pham Van Hien Faculty of Chemical Engineering, Bach Khoa University, VNU-HCM,268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Viet Nam

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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Published

12-04-2018

How to Cite

[1]
N. D. Nam, Nguyen To Hoai, and P. V. Hien, “A study on the localized corrosion inhibition for mild steel in saline solution”, Vietnam J. Sci. Technol., vol. 56, no. 2, pp. 174–183, Apr. 2018.

Issue

Section

Materials