Corrosion behavior and glass-forming ability of Cu-Zr-Al-Nb alloys

被引：35
|
作者：
Tam, M. K. [1 ]
Pang, S. J. [1 ]
Shek, C. H. [1 ]
机构：
[1] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2007年 / 353卷 / 32-40期
关键词：
amorphous metals; metallic glasses; chemical properties; corrosion; x-ray diffraction; glass formation; microscopy; scanning electron microscopy; processing; calorimetry;
D O I：
10.1016/j.jnoncrysol.2007.05.119
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：
Amorphous CU50-xZr(45)Al(5)Nb(x), (x = 0, 1, 3 and 5 at.%) samples with critical diameters of 1.54-2.05 mm were formed by copper-mold suction casting. The effects of Nb on the glass formation ability were evaluated with differential scanning calorimetry and the corrosion resistances of the alloys with the addition of Nb were evaluated in 1 N HCl, 3% NaCl and 0.5 N H2SO4 solutions, respectively, by weight loss and polarization curve measurements. The samples surfaces were examined after the corrosion test with SEM. It was found that the addition of Nb causes a decrease of AT, Of Cu50-xZr45Al5Nbx alloy from 54 K to 45 K. On the other hand, the corrosion resistances in various solutions were improved with the addition of Nb. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：3596 / 3599
页数：4
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