2-Mercaptopyrimidine as an effective inhibitor for the corrosion of cold rolled steel in HNO3 solution
2-Mercaptopyrimidine as an effective inhibitor for the corrosion of cold rolled steel in HNO3 solution
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2-巯基嘧啶作为冷轧钢在 HNO3 溶液中的缓蚀剂
DOI：
10.1016/j.corsci.2017.02.011
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发表时间：
2017-04-01
影响因子：
8.3
通讯作者：
Du, Guanben
中科院分区：
文献类型：
--
作者：
Li, Xianghong;Deng, Shuduan;Du, Guanben
比较研究了5种嘧啶衍生物（2-氯嘧啶、2-羟基嘧啶、2-溴嘧啶、2-氨基嘧啶、2-巯基嘧啶）在0.1 M HNO3溶液中对冷轧钢（CRS）的缓蚀作用。2-巯基嘧啶（MP）是一种有效的抑制剂，在低浓度0.50 mM下的抑制率高达99.1%，而其他4种嘧啶衍生物的抑制能力较差。MP的加入使阳极曲线和阴极曲线都趋向于低电流密度，并显著增强了阻抗。通过量子化学计算和分子动力学模拟对吸附机理进行了理论研究。(C) 2017 Elsevier Ltd.版权所有。
The inhibition effect of five pyrimidine derivatives (2-chloropyrimidine, 2-hydroxypyrimidine, 2-bromopyrimidine, 2-aminopyrimidine, 2-mercaptopyrimidine) on the corrosion of cold rolled steel (CRS) in 0.1 M HNO3 solution was comparatively examined. 2-Mercaptopyrimidine (MP) was found to be an effective inhibitor with the inhibition efficiency as high as 99.1% at a low concentration 0.50 mM. But other four pyrimidine derivatives exhibited poor inhibitive ability. The addition of MP caused both anodic and cathodic curves to low current densities, and was found to significantly strengthen the impedance. Quantum chemical calculation and molecular dynamic simulation were performed to theoretically investigate the adsorption mechanism. (C) 2017 Elsevier Ltd. All rights reserved.