表面技术2017，Vol.46Issue(1)：182-186,5.DOI:10.16490/j.cnki.issn.1001-3660.2017.01.000
肉桂酸咪唑啉化合物对N80钢在盐酸介质中缓蚀性能的研究
A Cinnamyl Imidazoline as Effective Inhibitor of N80 Steel in Hydrochloric Acid
摘要
Abstract
The work aims to study the inhibition performance of cinnamyl imidazoline as inhibitor of N80 steel in hydroch-loric acid. A cinnamyl imidazoline was synthesized using solvent method, with cinnamic acid and N-hydroxyethyl - ethylene-diamine as raw materials and aluminum oxide as catalyst. The molecular structure of the product was characterized by means of UV spectrum and IR spectroscopy. Inhibition performance of the imidazoline corrosion inhibitor of N80 steel in hydrochloric acid was studied by virtue of static weight-loss measurement, polarization curves and electrochemical impedance spectroscopy, and the corrosion inhibition mechanism was also discussed preliminarily. The results of weight-loss measurement indicated that inhibition efficiency of the investigated compound was found to depend on mass concentration of the inhibitor. The corrosion inhibition efficiency was stable and up to 86.9% as imidazoline mass concentration reached 400 mg/L. Corrosion rate increased with the increase of temperature, and the corrosion inhibitor had good inhibition efficiency when the temperature ranged from 30℃ to 50℃. The results of polarization curves indicated that the inhibitor was mixed-type inhibitor which worked to control anodic reaction with geometric blanketing effect. The analysis of electrochemical impedance spectroscopy implied that the inhi-bition efficiency increased with the increase of corrosion inhibitor mass concentration and suppressed corrosion of carbon steel in HCl medium significantly. Cinnamyl imidazoline is an effective corrosion inhibitor of N80 steel in HCl medium.关键词
咪唑啉/溶剂法/碳钢/缓蚀剂/失重法/电化学方法Key words
imidazoline/solvent method/mild steel/corrosion inhibitor/weight loss method/electrochemical method分类
矿业与冶金引用本文复制引用
郭睿,程敏,杨江月,李欢乐,刘爱玉..肉桂酸咪唑啉化合物对N80钢在盐酸介质中缓蚀性能的研究[J].表面技术,2017,46(1):182-186,5.基金项目
陕西省科技统筹创新工程计划项目(2014KTCL01-11) Shaanxi Science& Technology Coordination& Innovation Project(2014KTCL01-11) （2014KTCL01-11）
