STRUCTURAL EFFECTS OF ORGANIC-COMPOUNDS AS CORROSION-INHIBITORS FOR HYDROGEN ENTRY INTO IRON IN SULFURIC-ACID

被引：15

作者：

KOBAYASHI, K

SHIMIZU, K

IIDA, M

机构：

[1] Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, 223

来源：

CORROSION SCIENCE | 1993年 / 35卷 / 5-8期

关键词：

D O I：

10.1016/0010-938X(93)90368-Q

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of propynol, methyl-propynyl ether, N,N-dimethylpropynylamine and trimethylpropynyl ammonium cation on hydrogen entry into iron and corrosion were investigated by weight loss tests and electrochemical measurements in de-aerated 1 N sulphuric acid. Trimethylpropynyl ammonium cation gave the best inhibition for hydrogen entry. It is proposed that the inhibition of hydrogen entry by acetylenic compounds is essential to lower the pi electron density by the introduction of a strong electron attracting group adjacent to the triple bond, resulting in the enhancement of adsorption by back-donation.

引用

页码：1431 / 1435

页数：5

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