Thermal stability and corrosion behavior of Cu-Zr-Al-Y bulk metallic glass

被引：12
作者：
Chen, S. F. [1 ]
Lin, S. L. [1 ]
Chen, J. K. [1 ]
Lin, Y. L. [1 ]
机构：
[1] Natl Taipei Univ Technol, Inst Mat Sci & Engn, Taipei 106, Taiwan
来源：
INTERMETALLICS | 2010年 / 18卷 / 10期
关键词：
Glasses; metallic; Glass-forming ability; Corrosion; MINOR ALLOYING ADDITIONS; MECHANICAL-PROPERTIES; FORMING ABILITY;
D O I：
10.1016/j.intermet.2010.02.051
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, (Cu0.46Zr0.46Al0.08)(100-X)Y-X (0 <= X <= 8,in at.%) alloy ribbons and rods are prepared by single roller melt-spinning method and suction casting method. X-ray spectra show that the obtained alloy ribbons with X = 0, 2, 4, 8 and alloy rods with X = 0 and 4 at.% Y are fully amorphous. Amorphous rod of 4 at.% Y containing alloy up to 6 mm diameter can be achieved and has a large supercooled region (Delta T-X) up to 75 K. In contrast, alloy rods with either X = 2 or 8 at.% Y contain small amount of crystallites. In H2SO4 solution, the Cu-Zr-Al-Y metallic glass rods form uniform oxide films on surface and have corrosion rate of 0.051-0.073 mm/yr. Pitting occurs when the glass rods are immersed in 3% NaCl solution and sea water and the corrosion rate ranges from 0.194 to 0.286 mm/yr. In all solutions, the corrosion resistance of Cu-Zr-Al-Y bulk metallic glass outperforms 304 L stainless steel. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1954 / 1957
页数：4
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