School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
J Colloid Interface Sci. 2019 Mar 7;538:519-529. doi: 10.1016/j.jcis.2018.12.020. Epub 2018 Dec 6.
Food flavors of 2-isobutylthiazole (ITT) and 1-(1,3-Thiazol-2-yl)ethanone (TEO) for the corrosion inhibition of X65 steel in HSO were studied by electrochemical methods, atomic force microscopy (AFM), scanning electron microscopy (SEM) and theoretical calculations. Electrochemical experiments show that ITT and TEO can effectively inhibit the corrosion of cathode and anode of X65 steel, and they are mixed-type corrosion inhibitors. Surface topography analysis (SEM and AFM) also visually demonstrate that ITT and TEO form an effective barrier film on the X65 steel surface to isolate the corrosive medium. Theoretical calculations profoundly explain the inhibition mechanism of ITT and TEO at the molecular level. In addition, the adsorption behavior of ITT and TEO on the surface of X65 steel is consistent with Langmuir isotherm adsorption. The results of experimental and theoretical studies have shown that the inhibition effect of TEO is better than ITT for X65 in 0.5 M HSO.
通过电化学方法、原子力显微镜（AFM）、扫描电子显微镜（SEM）和理论计算研究了 2-异丁基噻唑（ITT）和 1-（1,3-噻唑-2-基）乙酮（TEO）对 X65 钢在 HSO 中腐蚀的抑制作用。电化学实验表明，ITT 和 TEO 能有效抑制 X65 钢阴极和阳极的腐蚀，它们是混合型缓蚀剂。表面形貌分析（SEM 和 AFM）也直观地证明了 ITT 和 TEO 在 X65 钢表面形成了有效的阻挡膜，以隔离腐蚀性介质。理论计算从分子水平上深刻地解释了 ITT 和 TEO 的抑制机制。此外，ITT 和 TEO 在 X65 钢表面的吸附行为符合 Langmuir 等温吸附。实验和理论研究的结果表明，在 0.5 M HSO 中，TEO 对 X65 的抑制效果优于 ITT。
