The synergistic inhibition effect of octylmercaptopropionate and 8-quinolinol on the corrosion of iron in an aerated 0.5M Na2SO4 solution

被引：46

作者：

Suzuki, T

Nishihara, H

Aramaki, K

机构：

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

来源：

CORROSION SCIENCE | 1996年 / 38卷 / 08期

关键词：

low alloy steel; EPMA; IR spectroscopy; polarization; XPS; neutral inhibition;

D O I：

10.1016/0010-938X(95)00172-G

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The synergistic inhibition effect of sodium octylmercaptopropionate, C8H17S(CH2)(2)COONa (SOMP), and 8-quinolinol, C9H6NOH (Q1), on the corrosion of iron in an aerated 0.5M Na2SO4 solution was investigated by polarization measurement, X-ray photo-electron and FTIR spectroscopies and electron-probe micro-analysis. A high inhibition efficiency, 98.2%, was obtained by a mixture of 3 x 10(-4) M SOMP and 5 x 10(-4) M Q1. It was concluded that the high synergism of the mixture is mostly attributed to coverage of the iron surface with a precipitate layer composed of iron oxide and a chelate of Q1 with Fe3+ and with a layer of Fe3+-SOMP complex precipitated at defects preferentially. Copyright (C) 1996 Elsevier Science Ltd.

引用

页码：1223 / 1234

页数：12

共 18 条

[1] INHIBITION MECHANISM OF MEDIUM-SIZED POLYMETHYLENEIMINE [J].