Hydrogen Permeation Characteristics of Melt-Spun Ni-Nb-Zr Amorphous Alloy Membranes
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- Yamaura Shin-ichi
- Institute for Materials Research, Tohoku University
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- Shimpo Yoichiro
- Fukuda Metal Foil & Powder, Co. Ltd.
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- Okouchi Hitoshi
- Fukuda Metal Foil & Powder, Co. Ltd.
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- Nishida Motonori
- Fukuda Metal Foil & Powder, Co. Ltd.
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- Kajita Osamu
- Fukuda Metal Foil & Powder, Co. Ltd.
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- Kimura Hisamichi
- Institute for Materials Research, Tohoku University
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- Inoue Akihisa
- Institute for Materials Research, Tohoku University
Bibliographic Information
- Other Title
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- 急冷凝固Ni-Nb-Zrアモルファス合金膜の水素透過性
- キュウレイ ギョウコ Ni Nb Zr アモルファス ゴウキン マク ノ スイソ トウカセイ
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Abstract
We prepared the melt-spun (Ni0.6Nb0.4)100-xZrx(x = 0 to 40 at%) and other amorphous alloy membranes and examined the permeation of hydrogen through those alloy membranes. The interatomic spacing in the Ni-Nb-Zr amorphous structure increased with increasing Zr content. The crystallization temperature of the Ni-Nb-Zr amorphous alloys decreased with increasing Zr content. The hydrogen flow increased with an increase of the temperature or the difference in the square-roots of hydrogen pressures across the membrane, Δ√p. At relatively higher temperature up to 673 K or at relatively higher hydrogen pressure difference, Δ√p up to 550 Pa1/2, the hydrogen flow was more strictly proportional to Δ√p. This indicates that the diffusion of hydrogen through the membrane is a rate-controlling factor for hydrogen permeation. The permeability of the Ni-Nb-Zr amorphous alloys was strongly dependent on alloy compositions and increased with increasing Zr content. However, it was difficult to investigate the hydrogen permeability of the (Ni0.6Nb0.4)60Zr40 amorphous alloy in this work due to the embrittlement during the measurement. The maximum hydrogen permeability was 1.3 × 10-8(mol·m-1·s-1·Pa-1/2) at 673 K for the (Ni0.6Nb0.4)70Zr30 amorphous alloy. It is noticed that the hydrogen permeability of the (Ni0.6Nb0.4)70Zr30 amorphous alloy is higher than that of pure Pd metal. These permeation characteristics indicate the possibility of future practical use of the melt-spun amorphous alloys as a hydrogen permeable membrane.
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 68 (11), 952-957, 2004
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390282681456071040
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- NII Article ID
- 10014124169
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- NII Book ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL BIB ID
- 7161573
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed