Na_2WO_4与BTA复配对碳钢的缓蚀作用  

Complex of Tungstate and BTA as An Inhibitor for Carbol-steel Corrosion

作　　者：徐群杰[1] 陆柱[2] 周国定[1] 

机构地区：[1]上海电力学院国家电力公司热力设备腐蚀与防护重点实验室,上海200090 [2]华东理工大学防腐蚀中心,上海200237

出　　处：《华东理工大学学报（自然科学版）》2003年第5期493-495,共3页Journal of East China University of Science and Technology

基　　金：上海市青年科技启明星计划(02QF14022);上海市教委科技发展基金(01I01);上海市教委重点培育学科资助项目

摘　　要：采用交流阻抗法和极化曲线法来研究环境友好型缓蚀剂钨酸盐和苯并三氮唑(BTA)、ZnSO4、D-葡萄糖酸钠等的复配对碳钢的缓蚀效果。研究发现,当缓蚀剂总浓度为5×10-4mol/L时,钨酸盐和BTA复配摩尔比为2∶1时缓蚀效果最好,当配方中含有4mg/LZnSO4,其缓蚀效果有一定增加;再加入10mg/LD-葡萄糖酸钠后缓蚀效果明显增加。The corrosion inhibition of carbon steel electrode in modulated water with various inhibitors such as tungstate and the complex of tungstate and BTA was studied using AC impedance and polarization curves. When the concentration of inhibitor is 5×10-4 mol/L and the molar ratio of Na2WO4 to BTA is 2∶1, the complex of Na2WO4 and BTA shows good synergistic effects. Adding 4 mg/L ZnSO4 and 10 mg/L dextrosate sodium to the complex of Na2WO4 and BTA, the inhibitors show the best inhibition effects on carbon steel.

关 键 词：钨酸钠 复配 碳钢 缓蚀 电化学阻抗谱 

分 类 号：TG174.2[金属学及工艺—金属表面处理]