绿色缓蚀剂在海水中对X80碳钢的缓蚀性能研究  

Study on Inhibition Effects of the Green Inhibitors on Corrosion Behavior of X80 Carbon Steel in Seawater

作　　者：朱永艳[1] 林嘉欣[1] 谈燕[1] 

机构地区：[1]江苏师范大学化学化工学院,江苏徐州221116

出　　处：《广州化工》2016年第17期69-71,143,共4页GuangZhou Chemical Industry

基　　金：国家自然科学基金青年科学基金项目(21303077)

摘　　要：研究了3种市售绿色缓蚀剂:水溶性咪唑啉、2-膦酸基丁烷-1,2,4-三羧酸(PBTCA)和聚环氧琥珀酸(PESA)对X80碳钢在3.5%Na Cl溶液中的缓蚀作用。通过分析电化学阻抗谱和Tafel曲线得出:在3种缓蚀剂中,水溶性咪唑啉的缓蚀效果最佳;咪唑啉的最佳用量为0.6%(质量分数),PBTCA的最佳用量为7.5 mg/L,PESA的最佳用量为5.0 mg/L。因此,三种绿色缓蚀剂均可替代传统的无机缓蚀剂减缓X80碳钢在海水介质中的腐蚀。The inhibition effects of water soluble imidazoline,2-phosphonic acid butane 1,2,4-tricarboxylic acid（ PBTCA） and poly epoxy succinic acid（ PESA） on the corrosion behavior of X80 carbon steel in 3. 5% Na Cl solution were studied. Comparing the electrochemical impedance spectra and the Tafel plots,it was concluded that imidazoline had the best inhibition effects among the three inhibitors,the optimum dosage of imidazoline was 0. 6%,and the values for PBTCA and PESA were 7. 5 mg / L and 5. 0 mg / L,respectively. So the three green inhibitors could substitute the traditional inorganic inhibitors for reducing the corrosion of X80 carbon steel in seawater.

关 键 词：X80碳钢 绿色缓蚀剂 氯离子腐蚀 

分 类 号：TG174.42[金属学及工艺—金属表面处理]