表面技术2012，Vol.41Issue(5)：25-29,5.
色氨酸复配缓蚀剂对碳钢在硫酸中的缓蚀性能
The Corrosion Inhibition of Tryptophan and Its Compound for Carbon Steel in H2SO4 Solution
摘要
Abstract
The tryptophan and its compound were tested as corrosion inhibitors for carbon steel Q235 in an aqueous solution of 0. 5 mol/L sulphuric acid by weight-loss and electrochemistry methods. The inhibitory mechanism was discussed by isothermal adsorption model and corrosion kinetics. The results show that single tryptophan has low corrosion inhibitor effect, while L-tryptophan and potassium iodide have certain synergistic effect, but synergistic effect with ascorbic acid is not significant. The three optimum amount of compound, the inhibition efficiency reaches 92. 43 % ; The L-tryptophan and ascorbic acid are mixed type inhibitors, whereas the potassium iodide and complex inhibitors are the anodic type; Tryptophan is absvrbed on the surface of carbon steel by chemisorption adsorbed, in line with the Langmuir adsorption isotherm.关键词
色氨酸/协同效应/缓蚀剂/吸附等温模型Key words
tryptophan/ synergistic effect/ corrosion inhibitor/ isothermal adsorption model分类
矿业与冶金引用本文复制引用
黄开宏,周坤,芮玉兰,曹毅..色氨酸复配缓蚀剂对碳钢在硫酸中的缓蚀性能[J].表面技术,2012,41(5):25-29,5.基金项目
河北省教育厅项目(2009330) （2009330）
