Hydrogen Permeability of Glass-Forming Ni-Nb-Zr-Ta Crystalline Membranes

Title
Hydrogen Permeability of Glass-Forming Ni-Nb-Zr-Ta Crystalline Membranes
Authors
진홍석서진유박경원이우영에릭플러리
Keywords
alloys; amorphous materials; casting; embrittlement; scanning electron microssopy (SEM)
Issue Date
2011-08
Publisher
Metals and Materials International
Citation
VOL 17, NO 4, 541-545
Abstract
A crystalline form of a glass-forming Ni-Nb-Zr-Ta alloy was studied as a hydrogen permeation membrane working in the temperature range from 573 K to 773 K. The crystalline membrane composed of an Nb-rich phase in an Ni10Zr7 matrix demonstrated a hydrogen permeation property superior to the membrane of the same chemical composition with an amorphous structure and the values of the hydrogen permeability were found to exceed those of the Pd-based membranes. However, the mechanical stability deteriorated significantly such that all membranes failed during hydrogen permeation. This indicates a larger sensitivity to hydrogen embrittlement in comparison with the same alloy in an amorphous state.
URI
http://pubs.kist.re.kr/handle/201004/40396
ISSN
1598-9623
Appears in Collections:
KIST Publication > Article
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