枇杷叶提取物对盐酸溶液中碳钢的缓蚀作用增强：电化学研究

Enhanced Corrosion Resistance of Carbon Steel in Hydrochloric Acid Solution by Eriobotrya Japonica Thunb. Leaf Extract: Electrochemical Study.

作者信息

Yang Wenjing, Wang Qihui, Xu Ke, Yin Yanjun, Bao Hebin, Li Xueming, Niu Lidan, Chen Shiqi

机构信息

College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China.

Chongqing Institute for food and Drug Control, Chongqing 401121, China.

出版信息

Materials (Basel). 2017 Aug 16;10(8):956. doi: 10.3390/ma10080956.

DOI:10.3390/ma10080956

PMID:28812993

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5578322/

Abstract

The biodegradable inhibitors, which could effectively reduce the rate of corrosion of carbon steel, were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The mixed-type inhibitors extracted from Eriobotrya japonica Thunb. leaf exhibited excellent inhibition performance, and the inhibition efficiency for carbon steel reached 90.0% at 298 K in hydrochloric acid. Moreover, the adsorption mechanism of the inhibitors on a carbon steel surface is described by the Langmuir adsorption isotherm. Simultaneously, the corrosion morphology of the carbon steel and the inhibitor structure were analyzed by scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FT-IR), respectively.

摘要

通过动电位极化和电化学阻抗谱（EIS）研究了可有效降低碳钢腐蚀速率的可生物降解缓蚀剂。从枇杷叶中提取的混合型缓蚀剂表现出优异的缓蚀性能，在298K的盐酸中对碳钢的缓蚀效率达到90.0%。此外，缓蚀剂在碳钢表面的吸附机理用朗缪尔吸附等温线进行描述。同时，分别用扫描电子显微镜（SEM）和傅里叶变换红外光谱（FT-IR）分析了碳钢的腐蚀形貌和缓蚀剂结构。