| 田会娟.2-巯基苯并噻唑三元复合缓蚀剂对碳钢的缓蚀作用[J].唐山学院学报,2020,32(6):37-41,60 |
| 2-巯基苯并噻唑三元复合缓蚀剂对碳钢的缓蚀作用 |
| Corrosion Inhibition of 2-Mercaptobenzothiazole Ternary Compound Inhibitor on Carbon Steel |
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| DOI：10.16160/j.cnki.tsxyxb.2020.06.008 |
| 中文关键词: 2-巯基苯并噻唑 碘化钾 硫脲 碳钢 缓蚀作用 |
| 英文关键词: 2-mercaptobenzothiazole potassium iodide thiourea carbon steel corrosion inhibition |
| 基金项目:唐山市科技计划项目（17130256a） |
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| 中文摘要: |
| 首先研究了2-巯基苯并噻唑（MBT）缓蚀率与其浓度的关系，选用碘化钾（KI）和硫脲（TU）与之进行了三元复配，并通过极化曲线和电化学阻抗研究了三元复合缓蚀剂的缓蚀机理，最后进行了热力学分析。实验结果表明，MBT，KI和TU三元复合缓蚀剂其浓度最佳配比为1：2：2；总浓度为250 mg/L时，在最佳配比下，缓蚀率可达97.7%；三元复合缓蚀剂是以抑制阳极溶解反应为主的混合型缓蚀剂，在碳钢表面的吸附符合Langmuir等温吸附模型。 |
| 英文摘要: |
| First of all, the relationship between the corrosion inhibition efficiency and the concentration of 2-mercaptobenzothiazole(MBT) is studied, with potassium iodide (KI) and thiourea (TU)selected for ternary compound inhibitor, whose inhibition mechanism is learned by polarization curve and electrochemical impedance. Then, the thermodynamic analysis is carried out. The experimental results show that: The optimal mass ratio of MBT, KI and TU is 1:2:2; the corrosion inhibition efficiency can reach 97.7% with the total concentration 250 mg/L and the optimal mass ratio; the ternary compound inhibitor is a mixed inhibitor, which mainly inhibits the anodic dissolution reaction; its adsorption on the carbon steel surface conforms to the Langmuir isotherm adsorption model. |
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