Peptidic compound as corrosion inhibitor for brass in nitric acid solution

被引：22

作者：

Abed, Y

Kissi, M

Hammouti, B

Taleb, M

Kertit, S

机构：

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

[2] DEM, Fac Sci, Dept Chim, Fes, Morocco

[3] ENS, Lab Physicochim Mat, Rabat, Morocco

来源：

PROGRESS IN ORGANIC COATINGS | 2004年 / 50卷 / 02期

关键词：

peptidic compound; corrosion inhibitor; brass; nitric acid;

D O I：

10.1016/j.porgcoat.2004.02.001

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The study of Boc-Phe-Met-OCH3 as corrosion inhibitor for 60Cu-40Zn in nitric acid solution was performed through weight loss and electrochemical polarisation measurements. The corrosion rate is highly reduced in the inhibited nitric acid. The inhibition efficiency E (%) reached a maximum value of 100% for Boc-Phe-Met-OCH3. Polarisation measurements indicated that Boc-Phe-Met-OCH3 acted as cathodic inhibitors without changing the mechanism of the hydrogen evolution reaction. The results showed that the inhibition occurred via chemisorption of the inhibitor molecules on the corroding metal following Frumkin's isotherm. The effect of the temperature in the range 303-353 K on the corrosion of Cu-Zn alloy in 0.5 M nitric acid with and without addition of Boc-Phe-Met-OCH3 has been studied. The associated activation energy has been determined. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：144 / 147

页数：4

共 29 条

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