Thermal Stability of [Ni(htde)](ClO4)2 and Its Corrosion Inhibition Effect for Mild Steel in 1.0 M HCl and H2SO4 Solutions

作者：Wan Gou, Bin Xie, Chong Xu, Zhi Zheng, Jiajun He, Dan Huang, Na Geng · 发表于：International Journal of Electrochemical Science · 年份：2018 · DOI：10.20964/2019.01.27 · 被引用次数：5 · 研究领域：Corrosion Behavior and Inhibition、Concrete Corrosion and Durability、Hydrogen embrittlement and corrosion behaviors in metals

In this study, the nickel (II) complex of 5, 7, 7, 12, 14, 14-hexamethyl-1, 4, 8, 11-tetraazacyclotetradeca4, 11-diene ([Ni(htde)](ClO 4 ) 2 ) is synthesized and the thermal stability of [Ni(htde)](ClO 4 ) 2 also studied by TG/DSC technology, while its corrosion inhibition for mild steel (MS) in 1.0 M HCl and H 2 SO 4 solutions is studied by potentiodynamic polarization and weight loss measurements. Results findings that the thermal decomposition process of [Ni(htde)](ClO 4 ) 2 in N 2 and air atmospheres all proceeded in three steps, and the thermal decomposition is not affected by N 2 and air atmospheres, which can be stable at the temperature below 270 °C under these two atmospheres. [Ni(htde)](ClO 4 ) 2 is a mixed-type inhibitor, the inhibition efficiency increases with the increase of [Ni(htde)](ClO 4 ) 2 concentration. And the adsorption of [Ni(htde)](ClO 4 ) 2 on MS surface can be described by Langmuir isotherm, which belongs to physic- and chemisorption.