硫酸溶液中聚天冬氨酸对铜的缓蚀作用  

Corrosion Inhibition of Polyaspartic Acid for Cooper in Sulphur Acid

作　　者：贾艳霞[1] 谷宁[2] 李春梅[2] 

机构地区：[1]河北北方学院农林科技学院,河北张家口075000 [2]河北师范大学化学学院,河北石家庄050016

出　　处：《河北北方学院学报（自然科学版）》2008年第1期39-42,共4页Journal of Hebei North University:Natural Science Edition

基　　金：河北省自然科学基金项目(B2006000131);河北省教育厅资助项目(20052022);河北师范大学科研基金资助(L2004Y05)

摘　　要：目的对聚天冬氨酸(PASP)在0.5 mol/L硫酸中对铜的缓蚀性能进行了测试.方法采用电化学稳态极化法和交流阻抗法.结果PASP同时抑制阴阳极过程,室温20℃时缓蚀效率随着聚天冬氨酸浓度的增加而增加,当PASP质量浓度达到8 g/L时缓蚀效率达到87.4%;PASP在铜表面的吸附作用符合修正过的Langmuir等温式形式.结论PASP对铜具有一定的缓蚀保护能力.Objective The corrosion inhibition ability of corrosion inhibitor PASP to cooper in H2SO4 solution is discussed. Methods With electrochemical impedance spectroscopy （EIS） and stable polarity curve method. Results PASP inhibited the process of anode and cathode reaction. The inhibiting performance of PASP increased with the rise of concentration at 20℃. The maximum inhibition efficiency was 87.4% within the previous scope of concentration. And the dynamic absorbing process was consistent with the amended Longmuir absorption model. Conclusion PASP has certain corrosion inhibition function.

关 键 词：聚天冬氨酸 铜 缓蚀剂 电化学 

分 类 号：O657.1[理学—分析化学]