X-ray photoelectron spectroscopy study of the corrosion behaviour of galvanised steel implanted with rare earths

被引：35
作者：
Arenas, MA [1 ]
García, I [1 ]
de Damborenea, J [1 ]
机构：
[1] CSIC, CENIM, Dept Corros & Protecc, E-28040 Madrid, Spain
来源：
CORROSION SCIENCE | 2004年 / 46卷 / 04期
关键词：
galvanised steel; cerium salts; XPS; EIS; neutral inhibition;
D O I：
10.1016/S0010-938X(03)00193-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present paper studies the effect of ion implantation of 2 x 10(16) ions/cm(2) of Ce+ and 2 x 10(16) ions/cm(2) of La+ at 150 keV on the corrosion behaviour of hot-dip galvanised steel. After implantation, galvanised steel was characterised by means of XPS previous to and following immersion in the medium. The results revealed incorporation of cerium and lanthanum on the surface as Ce2O3 and La2O3, respectively. Electrochemical impedance spectroscopy was carried out in order to evaluate its corrosion behaviour in 0.6 M NaCl during I month of immersion. The corrosion resistance was improved by an increase in the charge transfer resistance of the implanted specimens in the medium. This effect could be associated with changes in the morphology/microstructure of the corrosion products layer rather than in its composition variations. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1033 / 1049
页数：17
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