银杏叶提取物对碳钢在CO_2体系中的缓蚀性能  

Inhibition of carbon steel corrosion in solution saturated with CO_2 by ginkgo leaves extract

作　　者：苏芳[1] 顾明广[1] 赵景茂[2] 

机构地区：[1]燕京理工学院化工与材料工程学院,河北三河065201 [2]北京化工大学材料科学与工程学院,北京100061

出　　处：《河北大学学报（自然科学版）》2016年第3期264-268,共5页Journal of Hebei University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51471021)

摘　　要：用超生波辅助浸提法从银杏叶中提取有机缓蚀组分,并将其作为饱和二氧化碳盐水溶液中缓蚀剂的主要成分.对以银杏叶浸泡提取物为主的复合缓蚀剂的缓蚀效果进行了研究,实验表明:银杏叶提取物的缓蚀率最高可达84.7%,与硫脲复配后缓蚀率最高达到94.7%.电化学研究表明:银杏叶提取液与硫脲复配的缓蚀剂为混合型缓蚀剂.The active ingredients of ginkgo leaves were extracted by ultrasonic-assisted extraction.The inhibition effect of ginkgo leaves extract（QLE）on carbon steel corrosion in NaCl solution saturated with CO2 was studied.Experimental results showed that QLE is a good corrosion inhibitor with maximum inhibition efficiency up to 84.7% and to 94.7% when combined with thiourea.Polarization curves reveal that QLE combined with thiourea behaves like a mixed-type corrosion inhibitor.

关 键 词：银杏叶 缓蚀剂 CO2 腐蚀 

分 类 号：TG174[金属学及工艺—金属表面处理]