蒲公英叶提取物在盐酸中对铁片的缓蚀行为研究  

Study on the corrosion inhibition performance of Dandelion leafextract on iron tablets in hydrochloric Acid

作　　者：刘静[1] 刘余安琪 王胥翔 LIU Jing;LIU Yu′anqi;WANG Xuxiang(College of Materials and Architectural Engineering,Guizhou Normal University,Guiyang,Guizhou 550025,China)

机构地区：[1]贵州师范大学材料与建筑工程学院,贵州贵阳550025

出　　处：《贵州师范大学学报（自然科学版）》2024年第3期106-112,共7页Journal of Guizhou Normal University：Natural Sciences

基　　金：贵州省科学技术基金(黔科合基础-ZK[2023]-250)。

摘　　要：通过浸提法从蒲公英叶中提取植物缓蚀剂,采用失重法、傅里叶红外光谱测试、腐蚀形貌表征法及吸附等温曲线拟合,研究了蒲公英叶提取物在1 mol/L HCl中对纯铁的缓蚀性能和机制。结果表明:蒲公英叶提取物对铁片均有显著的缓蚀效果,在35℃下,0.8 g/L的蒲公英叶提取物对铁片的缓蚀效率高达97.45%,效果最佳;蒲公英叶提取物中的活性分子官能团,以物理吸附的形式占据铁片表面反应位点来抑制铁片腐蚀。吸附等温线拟合结果显示,蒲公英叶提取物在铁片表面的吸附为单分子层吸附,吸附过程符合Langmuir吸附等温模型。In this paper,a plant corrosion inhibitor was extracted from Dandelion leaves by leaching method,and weight loss method,Fourier infrared spectroscopy test,corrosion morphology characterization method and combined with adsorption isothermal curve fitting were used to jointly investigate the corrosion inhibition performance and mechanism of Dandelion leaf extracts on pure iron in 1 mol/L HCl.The experimental results showed that the Dandelion leaf extract had a significant corrosion inhibition effect on all iron flakes.At 35℃,the corrosion inhibition efficiency of 0.8 g/L dandelion leaf extract was 97.45%,which was the best effect;The active molecular functional groups in Dandelion leaf extract occupy the reaction sites on the surface of iron tablets in the form of physical adsorption,inhibiting the corrosion of iron tablets.The results of adsorption isotherm fitting showed that the adsorption of Dandelion leaf extract on the surface of iron sheets was monomolecular layer adsorption.The adsorption process was consistent with Langmuir adsorption isotherm modeling.

关 键 词：植物缓蚀剂 蒲公英 纯铁 吸附 

分 类 号：TG178[金属学及工艺—金属表面处理]