期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 60, 期 -, 页码 139-143出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2015.09.001
关键词
Bulk metallic glasses; Composite; Corrosion resistance; X-ray photoelectron spectroscopy
资金
- National Natural Science Foundation of China [51371065]
The corrosion behaviors of Ti40Zr25Ni12-xNbxCu3Be20 (x = 0, 4, 8, and 12 at.%) alloys in 0.5 mol/L H2SO4 solution were studied, aiming to establish the relationship between Nb content and corrosion resistance. The addition of Nb element gives rise to a clear microstructural evolution, from a completely amorphous structure for the alloys without Nb and with 4% Nb alloys to an amorphous/crystalline composite structure for the alloys with 8% and 12% Nb. The alloy with higher Nb content exhibits better corrosion resistance, which can be attributed to the formation of Ti4+-, Zr4+ -, and Nb5+-enriched highly protective surface film in corrosive solutions. (C) 2015 Elsevier B.V. All rights reserved.
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