摘要
采用静态失重、动电位极化、电化学阻抗等方法研究了两种苯并咪唑-N-曼尼希碱(PAB和PPB)在盐酸介质中对N80钢的缓蚀性能。结果表明:两种缓蚀剂均为混合控制型缓蚀剂,都能自发吸附于碳钢表面,其行为符合Langmuir吸附等温式。PPB的缓蚀性能好于PAB,这与量子化学计算和分子动力学模拟的结论相吻合。
The inhibition performance of two compounds of benzimidazole N-mannich base namely PAB and PPB for N80 steel in HCl solution was investigated by means of weight loss test, potentiodynamic polarization and electrochemical impedance spectroscopy. The results showed that both PAB and PPB were mixed-type inhibitor, and were adsorbed on the surface of mild steel spontaneously; whilst PPB has higher inhibition efficiency than that of PAB, which accorded well with theoretical prediction. Furthermore,the adsorption of both PAB and PPB follows Langmuir isotherm law.
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2015年第5期415-422,共8页
Journal of Chinese Society For Corrosion and Protection
基金
长江大学工程技术学院科研基金项目(13J0603)资助
关键词
苯并咪唑衍生物
缓蚀剂
电化学测试
量子化学计算
分子动力学模拟
benzimidazol derivative
corrosion inhibitor
electrochemical measurement
quantum chemistry calculation
molecular dynamics simulation
