INHIBITION EFFECT OF SOME THIADIAZOLE DERIVATIVES ON BRONZE CORROSION

Ileana  ROTARU; Simona  VARVARA; Liana Maria  MUREŞAN

INHIBITION EFFECT OF SOME THIADIAZOLE DERIVATIVES ON BRONZE CORROSION

Authors

Ileana ROTARU Faculty of Chemistry and Chemical Engineering, Department of Chemical Engineering, Babes-Bolyai University, Cluj-Napoca, Romania. Email: ileana.rotaru@hgtc.edu.
Simona VARVARA Department of Cadastre, Faculty of Civil Engineering and Environmental Engineering, Alba Iulia University, Romania. Email: svarvara@uab.ro. https://orcid.org/0000-0003-2990-388X
Liana Maria MUREŞAN Department of Chemical Engineering, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, Romania. Email: limur@chem.ubbcluj.ro. https://orcid.org/0000-0002-2891-2947

Keywords:

bronze, corrosion, thiadiazole derivatives, electrochemical impedance spectroscopy, polarisation curve

Abstract

The anticorrosive properties of two thiadiazole derivatives, namely 5 amino-1,2,4- thiadiazole (AT) and 2,5 diamino-1,3,4- thiadiazole (DAT) on bronze corrosion in a complex electrolyte at pH=4 has been studied by open-circuit potential, potentiodynamic polarization, and electrochemical impedance spectroscopy measurements. The results of electrochemical investigations showed that both thiadiazole derivatives protect to some extent the bronze surface from corrosion. In the investigated experimental conditions, the highest inhibition efficiencies values were around 71.3 % and 81.6 % in the presence of 1 mM AT and 10 mM DAT, respectively. The inhibition efficiencies of the organic compounds obtained by electrochemical impedance spectroscopy are in agreement with those obtained from polarization technique.

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STUDIA UBB CHEMIA, Volume 60 (LX), No. 3, September 2015

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Published

2015-09-30

How to Cite

ROTARU, I. ., VARVARA, S. ., & MUREŞAN, L. M. . (2015). INHIBITION EFFECT OF SOME THIADIAZOLE DERIVATIVES ON BRONZE CORROSION. Studia Universitatis Babeș-Bolyai Chemia, 60(3), 129–140. Retrieved from https://studia.reviste.ubbcluj.ro/index.php/chemia/article/view/8474