摘要
采用静态挂片失重法、电化学方法、扫描电子显微镜分析研究了水溶性咪唑啉酰胺在小分子有机酸中的缓蚀性能,并考察水溶性咪唑啉酰胺的最佳加入量。结果表明,在甲酸、乙酸质量浓度均为250mg/L的混合溶液中,50℃条件下,水溶性咪唑啉酰胺加入量为15mg/L时,缓蚀率可达97.1%;极化曲线及阻抗谱测试结果与静态挂片失重法结果一致,通过扫描电镜可以看出水溶性咪唑啉酰胺可以在碳钢表面成膜起到保护作用。
Weight-loss method,electrochemical methods and scanning electron microscopy(SEM)were used to study the inhibition performance of water soluble imidazoline amide in small molecule organic acid,the optimum amount of water soluble imidazoline amide was investigated.The results showed that when the formic acid and acetic acid concentration in the mixed solution was 250 mg/L,under the condition of 50 ℃,15 mg/L water soluble imidazoline amide was added,the inhibition rate was the highest,up to 97.1%.Polarization curve and electrochemical impedance spectroscopy(EIS)test results coincided with those of static weight-loss method.The scanning electronic microscopy results demonstrated that a film could form on the surface of the carbon steel specimen to protect it from corrosion.
出处
《腐蚀与防护》
北大核心
2015年第10期910-913 917,共5页
Corrosion & Protection
基金
973计划项目(2011CB606301)
关键词
咪唑啉酰胺
缓蚀性能
成膜性能
缓蚀率
imidazoline amide
inhibition performance
filming performance
corrosion inhibition rate
