Heterocycles as corrosion inhibitors for zinc pigments in aqueous alkaline media

被引：25
|
作者：
Muller, B
Imblo, G
机构：
[1] Fachhochschule fuer Druck Stuttgart, Germany
来源：
CORROSION SCIENCE | 1996年 / 38卷 / 02期
关键词：
aluminium; zinc;
D O I：
10.1016/0010-938X(96)00122-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Zinc pigments react in aqueous alkaline media (e.g. water-borne paints) by the evolution of hydrogen. Heterocyclic compounds can inhibit this corrosion reaction. The corrosion inhibiting effect of the heterocycles depends strongly on the base which is used for adjusting the pH value to 10. Ammonia accelerates the corrosion reaction very much; the protection factors for the heterocycles are 5-40%. The examined heterocycles inhibit significantly better if dimethylethanolamine or sodium hydroxide are used as bases; protection factors increase up to 98%. The corrosion inhibiting effect of heterocycles can be explained by reference to Pearson [R.G.Pearson, J. Chem. Ed, 45, 581 (1968)]
引用
收藏
页码：293 / 300
页数：8
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