钨酸盐与苯并三唑对X70钢协同缓蚀作用的研究  

SYNERGISTIC EFFECT OF TUNGSTATE AND BENZOTRIAZOLE ON CORROSION INHIBITION OF X70 STEEL

作　　者：张付宝[1] 余晓鹏[1] 潘献晓[1] 肖亦[1] 李容[1] 蔡铎昌[1] 

机构地区：[1]西华师范大学化学化工学院,南充637002

出　　处：《腐蚀与防护》2006年第9期454-456,共3页Corrosion & Protection

基　　金：四川省科技厅重点项目(04jy029-100)

摘　　要：应用动电位扫描法和电化学阻抗法研究了钨酸盐和苯并三唑(BTA)在氯化钠介质中对X70钢的协同缓蚀作用。结果表明:X70钢在0.03%的NaCl溶液中的腐蚀为混合控制过程。Na2WO4.2H2O和苯并三唑均为阳极型缓蚀剂。在保持缓蚀剂总浓度为2×10-3mol/L时,Na2WO4.2HO∶BTA为1∶1时缓蚀率达最大,为83.01%。The corrosion inhibition behaviors of tungstate or/and benzotriazole（BTA） in 0.03% NaCI solution were studied using polarization curves and electrochemical impedance spectroscopy（EIS）. The inhibition efficiency of tungstate was higher than that of BTA. With the concentration ratio of tungstate/BTA being 1 ： 1 at the total concentration of 2 × 10^-3 mol/L, the inhibition efficiency reached the max 83.01%.

关 键 词：钨酸钠 苯并三唑 X70钢 协同缓蚀效应 

分 类 号：TG174.42[金属学及工艺—金属表面处理]