Pyridine-pyrazole compound as inhibitor for steel in 1 M HC1

被引：60

作者：

Bouklah, M

Attayibat, A

Hammouti, B ^{[1
]}

Ramdani, A

Radi, S

Benkaddour, M

机构：

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

[2] Fac Sci, Chim Organ Phys Lab, Oujda, Morocco

来源：

APPLIED SURFACE SCIENCE | 2005年 / 240卷 / 1-4期

关键词：

steel; pyridine-pyrazole; inhibition; corrosion; hydrochloric acid;

D O I：

10.1016/j.apsusc.2004.07.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The influence of 3,5-dimethyl-1H-pyrazole (P1), pyridine (P2) and 2-(3-methyl-1H-pyrazol-5-yl) pyridine (P3) on the corrosion inhibition of steel in molar hydrochloric acid solution is studied using weight-loss potentiodynamic and EIS measurements. Results obtained shows that P3 is the best inhibitor and its inhibition efficiency increases with the increase of concentration to attain 89% since 10(-3) M. Potentiodynamic polarisation studies clearly reveal that it acts essentially as a cathodic inhibitor. The inhibitor studied reduces the corrosion rates. E (%) values obtained from various methods used are in good agreement. Adsorption of P3 on steel surface has an S-shaped adsorption isotherm. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：341 / 348

页数：8

共 20 条

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