表面技术Issue(10)：79-85,7.DOI:10.16490/j.cnki.issn.1001-3660.2015.10.014
2,3-二巯基丁二酸对铜的缓蚀性能研究
Corrosion Inhibition Performance of 2,3-dimercaptosuccinic Acid on Copper
摘要
Abstract
Objective 2,3-dimercaptosuccinic acid(DMSA) was synthesized with maleic acid as raw material, to study the cor-rosion inhibition performance of DMSA on copper in 0. 5 mol/L NaOH solution. Methods DMSA was prepared by methods of addi-tion, elimination, addition and hydrolysis with maleic acid as raw material, the structure of which was then characterized by Fourier infrared spectroscopy (IR) and mass spectrometry (MS). The corrosion rates of copper in 0. 5 mol/L NaOH supplemented with different concentrations of DMSA were investigated by static weight loss tests, the corrosion inhibition performance was investigated by polarization curves and electrochemical impendence spectroscopy ( EIS) , respectively. Copper surface corrosion morphology was observed by scanning electronmicroscopy ( SEM) . Results IR and mass spectrometry jointly confirmed that the target product was DMSA. The corrosion rates of Cu in 0. 5 mol/L NaOH were 7. 60, 3. 25, 2. 13 μg/( cm2 ·h) with supplementation of 0, 2. 5, 5. 0 g/L DMSA, respectively. When the DMSA concentration in NaOH solution was 5. 0 g/L, the inhibition efficiency reached 94. 92%. Conclusion DMSA could absorb on the copper surface, decrease water erosion and increase the corrosion product film resistance and the charge transfer resistance. DMSA was an anodic inhibitor.关键词
2 ,3-二巯基丁二酸/硫醇/交流阻抗谱/铜/缓蚀剂/腐蚀Key words
2,3-dimercaptosuccinic acid/thiol/AC impedance spectroscopy/copper/corrosion inhibitor/corrosion分类
矿业与冶金引用本文复制引用
赵红冉,周玉丰,刘栓,苏胜培,余海斌..2,3-二巯基丁二酸对铜的缓蚀性能研究[J].表面技术,2015,(10):79-85,7.基金项目
国家自然科学基金(41506098) （41506098）
中国科学院海洋新材料与应用技术重点实验开放基金资助(LMMT-KFKT-2014-008)Fund：Supported by the National Natural Science Foundation of China (41506098)and Key Laboratory of Marine Materials and Related Technologies in China Academy of Sciences (LMMT-KFKT-2014-008) （LMMT-KFKT-2014-008）
