The effect of Ti-addition on the corrosion behavior of the partially crystallized Ni-based bulk metallic glasses

被引：15
作者：
Tan, C. G. [1 ,2 ]
Jiang, W. J. [1 ,2 ]
Zhang, Z. C. [1 ,2 ]
Wu, X. Q. [1 ,2 ]
Lin, J. G. [1 ,2 ]
机构：
[1] Xiangtan Univ, Fac Mat Sci & Photoelect Phys, Xiangtan 411105, Peoples R China
[2] Xiangtan Univ, Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2008年 / 108卷 / 01期
基金：
中国国家自然科学基金;
关键词：
amorphous materials; crystallization; electrochemical property; corrosion;
D O I：
10.1016/j.matchemphys.2007.08.036
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ni55Nb30Sn5Ti5Zr5 and Ni55Nb30Sn5Zr10 bulk metallic glasses with the partially crystallized structure were prepared by water-cooled copper-mold casting. The microstructures of the two alloys were investigated by means of XRD. The corrosion behavior of the alloys in 1 M NaCl and 1 M NaOH aqueous solution at room temperature was investigated by potentiodynamic polarization and immersion methods. The surface morphology after corrosion in 10% HCl solution was observed by SEM. Both Ni-based alloys exhibited spontaneous passive behavior in the selected electrolytes. The partially crystallized alloys had higher corrosion resistance in comparison with the fully amorphous alloy. Ti-addition to Ni55Nb30Sn5Zr10 alloy can improve the corrosion resistance due to the formation of Ti oxides. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：29 / 32
页数：4
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