CeCl3对Zn在NH4Cl溶液中的缓蚀作用

稀土, 2000, 21(4): 43-46. doi: 10.3969/j.issn.1004-0277.2000.04.011

CeCl3对Zn在NH4Cl溶液中的缓蚀作用

李道山 ^1, , 周德瑞 ^2, , 彭文 ^3, , 段接新 ^4,

1.大庆石油管理局,黑龙江,大庆,163712

2.哈尔滨工业大学应用化学系,黑龙江,哈尔滨,150001

3.大庆石油管理局,黑龙江,大庆,163712

4.大庆油田甲醇厂,黑龙江,大庆,163700

关键词：锌 , 缓蚀作用 , 氯化铈 , 极化曲线

Corrosion Inhibition of Zinc with Cerous Chloride

研究了Zn在含有少量CeCl3的NH4Cl溶液中的缓蚀作用.表面分析和Tafel极化曲线结果表明:Zn获得缓蚀作用是由于在其表面形成含铈的氢氧化物和CeO2的复合膜.这层膜大大降低了阴极反应速度,提高锌电极的极化性,达到保护锌的作用.

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