Hydriding Properties of (Mg<SUB>1−<I>x</I></SUB>M<I><SUB>x</SUB></I>)Ni<SUB>2</SUB> C15-Type Laves Phase Alloys
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- Terashita Naoyoshi
- Japan Metals & Chemicals Co., Ltd.
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- Akiba Etsuo
- National Institute of Advanced Industrial Science and Technology
Bibliographic Information
- Other Title
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- Hydriding Properties of (Mg1-xMx)Ni2 C15-Type Laves Phase Alloys
- Hydriding Properties of (Mg<SUB>1−<I>x</I></SUB>M<I><SUB>x</SUB></I>)Ni<SUB>2</SUB> C15-Type Laves Phase Alloys
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Abstract
Mg-based Laves phase alloys (Mg0.7M0.3)Ni2, where M elements were Ca, La, Ce, Pr, Nd and Gd were successfully developed. The alloys can be synthesized by a conventional induction melting and annealing method from intermetallic compounds MgNi2 and MNi2 as a source of Mg, Ni and M elements. The crystal structures of the major phases of annealed (Mg0.7M0.3)Ni2 alloys were C15-type for M=Ca and C15b-type for M=La, Ce, Pr, Nd and Gd Laves structures, respectively. In the alloys except M=Ce, hydrogenation and dehydrogenation reversibly occurred. The maximum hydrogen contents of the alloys are 1.2–1.6 mass% (H/M:0.6–0.8) under hydrogen pressure of 5 MPa at 243–273 K. As the results of measurements of p-c isotherms, in the case of the M=Pr and Nd, two step plateaus were clearly observed. After a few hydrogenation/dehydrogenation cycles, the alloys kept C15-type or C15b-type Laves structures without hydrogen-induced amorphization, disproportionation and decomposition.
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 47 (8), 1890-1893, 2006
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
- 1390001204251519104
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- NII Article ID
- 130004453227
- 10019296680
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- NII Book ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL BIB ID
- 8021640
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed