Development of nano cerium oxide incorporated aluminium alloy sacrificial anode for marine applications

被引：56

作者：

Shibli, S. M. A. ^{[1
]}

Archana, S. R. ^{[1
]}

Ashraf, P. Muhamed ^{[2
]}

机构：

[1] Univ Kerala, Dept Chem, Thiruvananthapuram 695581, Kerala, India

[2] Cent Inst Fisheries Technol, Cochin 682029, Kerala, India

来源：

CORROSION SCIENCE | 2008年 / 50卷 / 08期

关键词：

Aluminium; Alloy; EIS; Cathodic protection;

D O I：

10.1016/j.corsci.2008.06.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Aluminium-zinc alloy sacrificial anodes are extensively used for cathodic protection. The performance of the sacrificial anodes can be significantly improved by incorporation of microalloying elements in the aluminium matrix. In the present work nano cerium oxide particles of different concentrations ranging, from 0 to 1 wt% were incorporated for activating and improving the performance of the anode. The electrochemical test results revealed the increased efficiency of the anode. The electrochemical impedance spectroscopy revealed the information that the presence of nano cerium oxide in the anode matrix caused effective destruction of the passive alumina film, which facilitated enhancement of galvanic performance of the anode. Moreover, the biocidal activity of cerium oxide prevented the bio accumulation considerably which enables the anodes to be used in aggressive marine conditions. (C) 2008 Elsevier Ltd. All rights reserved

引用

页码：2232 / 2238

页数：7