ABSTRACT

The present work reports the application of 1,3,5-tris(4-methoxyphenyl)-1,3,5-triazinane for the inhibition of X60 steel corrosion in 3.5% NaCl saturated with CO₂. The compound was synthesized using a facile ultrasonic irradiation method, and for the first time, a comparative analysis of the static and hydrodynamic conditions was performed. The results of open circuit potential (OCP) vs. time and the potentiodynamic polarization are presented herein. The inhibitor showed a better performance (>97% efficiency) in the hydrodynamic conditions compared to the static conditions (>90% efficiency). The OCP vs. time results indicated a negative shift of the potential with inhibitor, revealing a primarily cathodic-type mechanism. Potentiodynamic polarization showed that the introduction of the triazine derivative significantly lowered the corrosion current densities suggesting that the inhibitor acted by adsorption and exhibited a mixed type of inhibition behavior with predominance of cathodic effect. The inhibitor adsorption on the steel surface followed the Langmuir isotherm.

摘要

本工作报告了1,3,5-三（4-甲氧基苯基）-1,3,5-三嗪烷在抑制CO ₂饱和的3.5％NaCl中抑制X60钢腐蚀的应用。使用简便的超声波辐照方法合成该化合物，并首次进行了静态和流体动力学条件的比较分析。本文给出了开路电势（OCP）随时间变化和电位动力学极化的结果。与静态条件（> 90％的效率）相比，抑制剂在水动力条件下表现出更好的性能（> 97％的效率）。OCP随时间变化的结果表明抑制剂的电势为负，表明了主要的阴极型机理。电位动力学极化表明，引入三嗪衍生物显着降低了腐蚀电流密度，表明该抑制剂通过吸附起作用，并表现出以阴极效应为主的混合类型的抑制行为。