钨酸钠的缓蚀作用及其复配协同效应研究  

Study on the Corrosion Effect of Sodium Tungstate and Its Compounding Synergistic Effect

作　　者：杨秦欢[1,2] 熊中平[3] 

机构地区：[1]四川理工学院材料与化学工程学院,四川自贡643000 [2]材料腐蚀与防护四川省重点实验室,四川自贡643000 [3]四川理工学院化学与制药工程学院,四川自贡643000

出　　处：《四川理工学院学报（自然科学版）》2014年第6期16-19,共4页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

基　　金：腐蚀与防护四川省重点实验室项目(2013CL14;2014CL07)

摘　　要：用开路电位测试、Tafel极化曲线测试和失重法研究了模拟海水中钨酸钠对AZ31镁合金的缓蚀作用。研究结果表明,当钨酸钠浓度为0.03 mol/L时具有较好的缓蚀效果,缓蚀效率为60%。钨酸钠通过与镁合金腐蚀产物共同成膜而起到保护作用。将钨酸钠与有机型缓蚀剂六次甲基四胺进行复配,其缓蚀性能仍主要由钨酸钠决定,缓蚀性能没有显著提升。The corrosion effect of sodium tungstate （Na2WO4） on AZ31 magnesium alloy is investigated by open circuitpotential test, Tafel polarization curves test and weight loss method. The results show that the best inhibition effect is obtainedat a concentration of 0.03 mol/L of Na2WO4 and the inhibition efficiency is 60%. The film is consisted of sodium tungstateand the corrosion product of magnesium alloy, so it can play a role in protection. The sodium tungstate is also combined withhexamethylenetetramine. But the corrosion inhibition is still mainly decided by sodium tungstate, and not improves signifi-cantly.

关 键 词：镁合金 缓蚀剂 钨酸钠 复配 

分 类 号：TG174.1[金属学及工艺—金属表面处理]