Acta Metallurgica Sinica (English Letters) ›› 2019, Vol. 32 ›› Issue (4): 471-480.DOI: 10.1007/s40195-018-0777-6

Special Issue: 2019年腐蚀专辑-1

• Orginal Article • Previous Articles     Next Articles

Corrosion Inhibition of Galvanized Steel in NaCI Solution by Tolytriazole

Yanhong Yan1,2, Hongwei Shi1(), Jun Wang2(), Fuchun Liu1, En-Hou Han1   

  1. 1 CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
    2 Department of Chemistry, Northeastern University, Shenyang 110004, China
  • Received:2017-11-15 Revised:2018-04-18 Online:2019-04-10 Published:2019-04-19
  • Contact: Shi Hongwei,Wang Jun
  • About author:

    Dr. Kun-Kun Deng was born in 1983 and was awarded Ph. D in Harbin University of Technology in 2011. After graduation, he worked in the College of Materials Science and Engineering, Taiyuan University of Technology. At the same time, he continued his research work on the design, fabrication and processing of advanced Mg-based material in. Now, he is the vice chairman of Youth Committee in Magnesium Alloy Branch of Chinese Materials Research Society. He was denoted as young academic pacemaker of Shanxi Province in 2018. He has held two projects of National Nature Science Foundation of China, one project of Specialized Research Fund for the Doctoral Program of Higher Education, one Project of International Cooperation in Shanxi and two projects of Natural Science Foundation of Shanxi. He has published more than 60 articles. The time cited is more than 840 (without selfcitations), and the H-index is 22. In addition, he has published one academic monograph and acquired eight Chinese patents.

Abstract:

Corrosion inhibition of tolytriazole for galvanized steel was studied in 5 mM NaCl by using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS), scanning vibrating electrode technique (SVET). The results of EIS and polarization tests indicate that tolytriazole is effective in corrosion inhibition of galvanized steel. As the concentration of tolytriazole is increased to 0.01 M, the inhibiting efficiency reaches above 98%. The low values of anodic and cathodic current density in SVET maps suggest that the complex of tolytriazole with galvanized steel inhibits the anodic and cathodic reactions of corrosion of zinc. The adsorption behaviour of tolytriazole is found to conform to Langmuir adsorption isotherm, which is typical chemical adsorption.

Key words: Tolytriazole, Galvanized steel, Corrosion inhibition, Potentiodynamic curves, Electrochemical impedance spectroscopy, SVET