表面技术2013，Vol.42Issue(3)：28-32,5.
硫酸介质中榕树叶提取液的缓蚀性能及其与KI的缓蚀协同效应
Corrosion Inhibition of Ficus Microcarpa Leaves Extract and Its Synergistic Effect with KI in Sulfuric Acid
摘要
Abstract
Through electrochemical methods and weight loss measurement,the corrosion inhibition of ficus microcarpa leaves extract (FLE) for carbon steel in sulfuric acid solutions was studied,and the synergistic effect between FLE and KI was investigated,furthermore the inhibition mechanism of FLE was discussed.The results showed that FLE was a mixed-type inhibitor for carbon steel,and the inhibition efficiency of FLE for carbon steel increased with increase of the concentration of FLE.There existed significant synergistic effect between FLE and KI,which made the mixture of FLE and KI was used as corrosion inhibitor,the corrosion current density and double layer capacitance decreased,the charge transfer resistance increased,consequently showed better corrosion inhibition and higher inhibition efficiency.The adsorption of FLE with the presence and absence of KI on the carbon steel surface was a spontaneous process,and obeyed Langmuir adsorption isotherm model.关键词
榕树叶/缓蚀剂/碳钢/硫酸/KI/协同效应Key words
ficus microcarpa leaves/ corrosion inhibitor/ carbon steel/ sulfuric acid/ KI/ synergistic effect分类
矿业与冶金引用本文复制引用
卢燕,郑兴文,刘新露,曾凤春..硫酸介质中榕树叶提取液的缓蚀性能及其与KI的缓蚀协同效应[J].表面技术,2013,42(3):28-32,5.基金项目
材料腐蚀与防护四川省重点实验室项目(2011CL07) （2011CL07）
绿色催化四川省高校重点实验室项目(LYJ1102) （LYJ1102）
