Determination of Ductile-to-Brittle Transition Hydrogen Concentrations (DBTC) for Group 5 Hydrogen Permeable Membranes Using <i>In-Situ</i> Small Punch Test
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- Matsumoto Yoshihisa
- Department of Mechanical Engineering, Oita National College of Technology
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- Yukawa Hiroshi
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya University
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- Nambu Tomonori
- Department of Materials Science and Engineering, Suzuka National College of Technology
Bibliographic Information
- Other Title
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- その場小型パンチ試験による 5 族水素透過膜の延性-脆性遷移水素濃度(DBTC)解析
- ソノ バ コガタ パンチ シケン ニ ヨル 5ゾク スイソ トウカマク ノ エンセイ-ゼイセイ センイ スイソ ノウド(DBTC)カイセキ
- Determination of Ductile-to-Brittle Transition Hydrogen Concentrations (DBTC) for Group 5 Hydrogen Permeable Membranes Using In-Situ Small Punch Test
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Abstract
For the group 5 metals, even in an ambient hydrogen atmosphere (pressure), a large amount of hydrogen dissolves into them and severe hydrogen embrittlement occurs. This means that there is a large barrier to the practical application of these metals as a hydrogen permeation membrane for hydrogen separation and purification. In this study, we have found that a ductile-to-brittle transition occurs for the niobium (Nb) or vanadium (V) metals as a function of the “hydrogen concentration”, by using a special setup of the in-situ small punch (SP) testing apparatus equipped with a gas-flow system. This paper deals with a definition for the discovered phenomenon that group 5 metals have hydrogen concentration which changes from ductile-to-brittle fracture (DBTC: Ductile-to-Brittle Transition hydrogen Concentration). The grain size and the alloying effects of tungsten (W) and molybdenum (Mo) on the DBTC of Nb or V have also been clarified. Using this advanced approach, the importance of the DBTC analyses is described on the design of group 5 metal based hydrogen permeation membranes.<br>
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 77 (12), 585-592, 2013
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
- 1390282681458787200
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- NII Article ID
- 40019896361
- 130004456372
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- NII Book ID
- AN00187860
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- COI
- 1:CAS:528:DC%2BC2cXivFSnur8%3D
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL BIB ID
- 025058726
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed