Poly(4-vinylpyridine-poly(3-oxide-ethylene) tosyle) as an inhibitor for iron in sulphuric acid at 80 °C

被引：78

作者：

Chetouani, C

Medjahed, K

Sid-Lakhdar, KE

Hammouti, B

Benkaddour, M

Mansri, A

机构：

[1] Univ Mohammed Ier, Lab Chim Eaux & Corros, Fac Sci, Oujda, Morocco

[2] Univ Tlemcen, Inst Chim, USTL, Tilimsen, Algeria

[3] Fac Sci, Lab Analyse & Caracterisat Mat, Oujda, Morocco

来源：

CORROSION SCIENCE | 2004年 / 46卷 / 10期

关键词：

iron; poly(4-vinylpyridine); inhibition; corrosion; sulphuric acid;

D O I：

10.1016/j.corsci.2004.01.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of poly(4-vinylpyridine-poly(3-oxide-ethylene) tosyle) P4VPPEO5000Ts, on the corrosion inhibition of iron in molar sulphuric acid solution is studied using weight-loss, polarisation resistance, potentiodynamic and EIS measurements. P4VPPEO5000Ts is an excellent inhibitor and its inhibition efficiency increases with the increase of concentration to attain 100% since 2.5 x 10(-8) M. Potentiodynamic polarisation studies clearly reveal that it acts as a mixed-type inhibitor. The polymer studied reduces the corrosion rates. E% values obtained from weight-loss, corrosion current density, polarisation resistance and EIS methods are in good agreement. Adsorption of this compound on iron surface has an S-shaped adsorption isotherm with two consecutive steps. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：2421 / 2430

页数：10

共 19 条

[1] An electrochemical study of the action of a poly(vinylpyridine) derivative as inhibitor for corrosion of iron in 1M H2SO4 [J].