Effects of crystallization on corrosion behaviours of a Ni-based bulk metallic glass

被引：0
作者：
Sen Liu
Lu Huang
Shu-jie Pang
Tao Zhang
机构：
[1] Beihang University,Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering
来源：
International Journal of Minerals, Metallurgy, and Materials | 2012年 / 19卷
关键词：
bulk metallic glasses; nickel alloys; microstructure; corrosion; crystallization;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effects of microstructure change on the corrosion behaviours of Ni55Nb20Ti10Zr8Co7 bulk glass-forming alloy were investigated in 1 mol/L HCl and 0.5 mol/L H2SO4 solutions. Different microstructures of the Ni-based alloy were achieved by annealing the bulk glassy rod prepared by copper mould casting. The microstructure, grain size, grain distribution, and phase composition were characterized. Electrochemical behaviours of the Ni-based alloy were revealed by static immersion and anodic potentiodynamic polarization tests. It is indicated that the corrosion behaviours of the Ni-based bulk glass-forming alloy are related to its microstructures, while the fully crystallized alloy exhibits a relatively lower corrosion resistance than those of the amorphous states.
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页码：146 / 150
页数：4
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