Oxidation behavior of Zr56Co28Al16 bulk metallic glasses

被引：9
作者：
Cao, W. H. [1 ]
Zhang, J. L. [1 ]
Shek, C. H. [1 ]
机构：
[1] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon Tong, Hong Kong, Peoples R China
来源：
CORROSION SCIENCE | 2012年 / 65卷
关键词：
Zirconium; Alloy; XPS; Oxidation; ZR-AL-CO; MECHANICAL-PROPERTIES; AMORPHOUS-ALLOYS; COBALT; DIFFUSION; SPECTRA; CUZR; ESCA; XPS; TI;
D O I：
10.1016/j.corsci.2012.08.057
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The oxidation behavior of Zr56Co28Al15 bulk metallic glasses was studied over the temperature range of 673-923 K. The oxidation kinetics of the metallic glass follows a two-stage or single parabolic rate law from 773 K to 923 K. Cobalt oxides precipitated on the topmost oxide layer during oxidation. Below the crystallization temperature, the scale formed after oxidation for ten hours was less than 2 mu m-thickness. The oxidation was accelerated up to 823 K, but the oxidation resistance was enhanced at a further increased temperature 923 K. The oxidation process was governed by the inward diffusion of oxygen and the outward diffusion of Co. (C) 2012 Elsevier Ltd. All rights reserved.
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页码：528 / 534
页数：7
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