Influence of Cr additions on corrosion resistance of Fe- and Co-based metallic glasses and nanocrystals in H2SO4

被引：33
作者：
Pardo, A. [1 ]
Merino, M. C.
Otero, E.
Lopez, M. D.
M'hich, A.
机构：
[1] Univ Complutense Madrid, Fac Quim, Dept Ciencia Mat, E-28040 Madrid, Spain
[2] Univ Rey Juan Carlos, Escuela Super Ciencias Expt & Tecnol, Madrid 28931, Spain
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2006年 / 352卷 / 30-31期
关键词：
amorphous metals; metallic glasses; alloys; corrosion; electrochemical properties;
D O I：
10.1016/j.jnoncrysol.2006.05.021
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influence of Cr concentration on the corrosion resistance of Fe73.5Si13.5B9Nb3Cu1 and C073.5Si13.5B9Nb3Cu1 metallic glasses was studied by DC electrochemical methods in different concentrations of H2SO4 (1, 3 and 5 M) at room temperature. Gravinietric tests were performed to establish the reliability of the data obtained electrochemically. Every test was determined with the same material in different states: amorphous, nanocrystalline and crystalline. In all cases metallic glasses and nanocrystals showed better resistance to corrosion in the tested conditions with increasing chromium concentration. However, in test conditions, the Fe-based materials maintained a high corrosion rate. The corrosion resistance of Co-based materials was slightly greater than that of Fe-based materials. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：3179 / 3190
页数：12
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