Electrochemical corrosion behavior of a Zr-based bulk-metallic glass

被引：74
|
作者：
Jiang, W. H. [1 ]
Jiang, F.
Green, B. A.
Liu, F. X.
Liaw, P. K.
Choo, H.
Qiu, K. Q.
机构：
[1] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
[2] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
[3] Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110023, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 04期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.2762282
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Using cyclic-anodic-polarization tests, the corrosion behaviors of the as-cast, deformed, and relaxed Zr52.5Cu17.9Ni14.6Al10.0Ti5.0 bulk-metallic glasses were investigated. Their corrosion behaviors are related to the amount of free volume. As the free volume decreased, the glasses became more corrosion resistant. The as-cast and the deformed glasses are less resistant to pit propagation, while the relaxed one is more vulnerable to pit nucleation. It is thought that an increase in free volume favors the pit propagation, and the chemical ordering caused by the relaxation may promote the pit nucleation.
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页数：3
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