摘要
以2-氨基苯并咪唑和含三嗪环阴离子表面活性剂为原料合成了两种苯并咪唑衍生物BSC6T和BSC8T。采用静态失重、动电位极化、电化学阻抗和扫描电镜等方法研究了它们在1mol/L HCl溶液中对45#碳钢的缓蚀行为。结果表明,与2-氨基苯并咪唑相比,BSC6T和BSC8T具有优良的缓蚀性能,其中,BSC8T的缓蚀性能更佳。在25℃下,1mol/L HCl溶液中,当BSC8T使用浓度达到0.9g/L时,缓蚀率为98.6%。BSC8T是一种以阴极为主的混合型缓蚀剂。
Two new benzimidazole derivatives, BSC6T and BSC8T, were synthesized using 2-aminobenzimidazole and triazine anionic surfactants. Their inhibition effect on steel 45(GB) in 1 mol/L HCl solution were studied by means of mass loss method, potentiodynamic polarization, electrochemical impedance spectroscopy(EIS) and scanning electron microscopy(SEM). Results showed that the inhibition efficiency increased significantly with the increasing inhibitor concentration;BSC6T and BSC8 T acted as a mixed type inhibitors with cathodic inhibition as the dominative action; BSC6T and BSC8T had better inhibition effect rather than 2- aminobenzimidazole; however,among the three inhibitors, BSC8T exhibited the best inhibition performance with inhibition efficiency up to 98.6% for a concentration of 0.9g/L.
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2015年第1期49-54,共6页
Journal of Chinese Society For Corrosion and Protection
基金
山西省科技攻关项目(20130313006-3)资助
