Copper corrosion inhibition mechanism by combination of 2-mercaptobenzothiazole and magnetic treatment

被引：0
作者：
Sun X. [1 ]
Qi Y. [1 ]
Dong S. [1 ]
机构：
[1] School of Chemical Engineering, Northeast Electric Power University, Jilin
来源：
Sun, Xuhui (sunxh@neepu.edu.cn) | 2018年 / Materials China卷 / 69期
关键词：
Adsorption; Alternating magnetic field; Corrosion; Corrosion inhibitor; Surface;
D O I：
10.11949/j.issn.0438-1157.20171062
中图分类号：
学科分类号：
摘要：
In order to investigate whether magnetic treatment and 2-mercaptobenzothiazole (MBT) have synergistic effect on corrosion inhibition, corrosion rate of red copper was measured under different treatment conditions by weight loss method. The treatments included permanent magnetic field, alternative magnetic field, corrosion inhibitor MBT, and combination of MBT and magnetic field. Mechanism of corrosion inhibition was studied with assistance of SEM, XRD and ATR-FTIR. The results showed that permanent magnetic field had little effect on corrosion inhibition, but alternative magnetic field had some improvement on corrosion inhibition by forming compact oxide film on copper surface. Alternative magnetic field reduced water polarity and gave water molecules power and activity, which increased MBT solubility in water and adsorbance on copper surface. Therefore, combination of alternative magnetic field and MBT has synergistic effect on corrosion inhibition. To achieve same corrosion inhibition effect as MBT itself, synergistic effect could decrease MBT usage by 60%. Because MBT is dissolved in NaOH solution, less MBT will reduce alkali consumption and lower conductivity of cooling water in power generator. © All Right Reserved.
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页码：2120 / 2126
页数：6
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