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

In this study, 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. | Vietnam Journal of Science and Technology 56 (2) (2018) 174-183 DOI: A STUDY ON THE LOCALIZED CORROSION INHIBITION FOR MILD STEEL IN SALINE SOLUTION Nguyen Dang Nam1, *, Nguyen To Hoai2, Pham Van Hien3 1 Institute for Basic and Applied Research, Duy Tan University, 3 Quang Trung, Da Nang City 550000, Viet Nam 2 PetroVietnam University, 762 Cach Mang Thang Tam Street, Long Toan Ward, Ba Ria City 790000, Viet Nam 3 Faculty of Chemical Engineering, Bach Khoa University, VNU-HCM, 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Viet Nam * Email: ndnam12a18@ Received: 7 August 2017; Accepted for publication: 5 March 2018 Abstract. In this study, 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 M due to high inhibition performance and good protective film formation. It also indicated that addition of mM Y(4NO2Cin)3 compound increased the localized corrosion inhibition with a decrease of the Cl¯ 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. Keywords: mild steel, localized corrosion inhibition, electrochemical techniques, surface analysis, wire beam electrode. Classification numbers: ; ; ; 1.

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