書誌事項
- タイトル別名
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- Mechanical Properties in Hydrogen Atmosphere and Hydrogen Permeability of Nb-W-Ta Alloys for Hydrogen Permeable Membrane
- 水素透過膜用Nb-W-Ta合金の水素雰囲気中における機械的性質と水素透過能
- スイソ トウカ マクヨウ Nb W Ta ゴウキン ノ スイソ フンイキ チュウ ニ オケル キカイテキ セイシツ ト スイソ トウカノウ
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抄録
Pressure-Composition-Isotherm (PCT) measurements, in-situ small punch (SP) tests in hydrogen gas atmosphere and hydrogen permeation tests are conducted for Nb-W-Ta ternary alloys in order to investigate the alloying effects of tantalum on the hydrogen solubility, the mechanical properties and hydrogen permeability of Nb-5 mol%W alloy. It is found that the hydrogen solubilities of Nb-5 mol%W-Xmol%Ta (X=5, 10) alloys are very similar with that of Nb-5 mol%W alloy. Also, the mechanical properties in hydrogen gas atmosphere and hydrogen permeability of the alloys are comparable with Nb-5 mol%W alloy. Therefore, the addition of tantalum scarcely modifies the properties of Nb-5 mol%W alloys. Thus, it is not necessary to take into account the amount of tantalum in Nb-W alloys for hydrogen permeable membrane. In other words, it is not needed to remove tantalum impurity from niobium mineral ores in the course of the refinery process of niobium metal. This means that niobium mineral ore containing high tantalum impurity can be used to reduce the material cost of Nb-W-based hydrogen permeable membranes.<br>
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 73 (9), 742-746, 2009
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001206478139776
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- NII論文ID
- 10025157405
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 10425371
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可