表面技术Issue(1)：127-132,6.
三聚氰胺对碳钢在HCl介质中的缓蚀作用
Corrosion Inhibition of Carbon Steel in HCl Solution by Melamine
摘要
Abstract
ABSTRACT:Objective To investigate the corrosion inhibition of carbon steel in HCl medium by melamine and the mechanism. Methods The electrochemical parameters and inhibitive efficiencies were obtained by measuring the potentiodynamic polarization curves and electrochemical impedance spectroscopy ( EIS ) for carbon steel in the solution containing different concentrations of melamine, and then combined with the result of quantum chemical calculations, the inhibition mechanism of melamine was dis-cussed and analyzed. Results Melamine was a mixed-type inhibitor for the corrosion of carbon steel in 1 mol/L HCl solution, and its inhibitive efficiency increased with increasing inhibitor concentration. The inhibition effect of melamine was produced by the ad-sorption of melamine molecules onto the carbon steel surface through nitrogen atoms, the Mulliken charges of which were relatively more negative. The adsorption process was a spontaneous process, mainly physical adsorption, and obeyed the Langmuir isotherm equation. Conclusion Melamine could inhibit the corrosion of carbon steel in HCl medium.关键词
三聚氰胺/碳钢/缓蚀剂/吸附/量化计算Key words
melamine/carbon steel/corrosion inhibitor/adsorption/quantum chemistry calculation分类
矿业与冶金引用本文复制引用
曾宪光,郑兴文,龚敏,段海兵..三聚氰胺对碳钢在HCl介质中的缓蚀作用[J].表面技术,2015,(1):127-132,6.基金项目
材料腐蚀与防护四川省重点实验室开放基金项目(2012CL05)Fund：Supported by the Open Fund Project of Key Laboratory of Material Corrosion and Protection of Sichuan Province (2012CL05) （2012CL05）
