Hydrogen Permeability of Glass-Forming Ni-Nb-Zr-Ta Crystalline Membranes
- Hydrogen Permeability of Glass-Forming Ni-Nb-Zr-Ta Crystalline Membranes
- 진홍석; 서진유; 박경원; 이우영; 에릭플러리
- alloys; amorphous materials; casting; embrittlement; scanning electron microssopy (SEM)
- Issue Date
- Metals and Materials International
- VOL 17, NO 4, 541-545
- 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.
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