Hydriding properties of ordered-/disordered-Mg-based ternary Laves phase structures

Nobuko Hanada; Shin Ichi Orimo; Hironobu Fujii

doi:10.1016/S0925-8388(03)00227-5

Hydriding properties of ordered-/disordered-Mg-based ternary Laves phase structures

Nobuko Hanada^*, Shin Ichi Orimo, Hironobu Fujii

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

23 Citations (Scopus)

Abstract

Ternary Laves phase structures with compositions MgYNi₄, MgCaNi₄ and CaYNi₄ were prepared, and the relationship between the structures and hydriding properties was studied in detail. Only in MgYNi₄ are Mg and Y found to be ordered and a plateau pressure is clearly observed in the P-C isotherm during the dehydriding process. In MgCaNi₄, however, Mg and Ca are disordered, and hydrogen content of MgCaNi₄ is ~30% larger than that of MgYNi₄. Control of their order/disorder in Laves phase structures may provide the hydriding properties with higher hydrogen concentrations and flatter plateau regions.

Original language	English
Pages (from-to)	429-432
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	356-357
DOIs	https://doi.org/10.1016/S0925-8388(03)00227-5
Publication status	Published - 2003 Aug 11
Externally published	Yes
Event	Proceedings of the Eight International Symposium on Metal Hyd (MH 2002) - Annecy, France Duration: 2002 Sept 2 → 2002 Sept 6

Keywords

Hydrogen storage material
Mechanical alloying
Thermal analysis
X-ray diffraction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/S0925-8388(03)00227-5

Cite this

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title = "Hydriding properties of ordered-/disordered-Mg-based ternary Laves phase structures",

abstract = "Ternary Laves phase structures with compositions MgYNi4, MgCaNi4 and CaYNi4 were prepared, and the relationship between the structures and hydriding properties was studied in detail. Only in MgYNi4 are Mg and Y found to be ordered and a plateau pressure is clearly observed in the P-C isotherm during the dehydriding process. In MgCaNi4, however, Mg and Ca are disordered, and hydrogen content of MgCaNi4 is ~30% larger than that of MgYNi4. Control of their order/disorder in Laves phase structures may provide the hydriding properties with higher hydrogen concentrations and flatter plateau regions.",

keywords = "Hydrogen storage material, Mechanical alloying, Thermal analysis, X-ray diffraction",

author = "Nobuko Hanada and Orimo, {Shin Ichi} and Hironobu Fujii",

note = "Funding Information: This work was partially supported by a Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research on Priority Area and on COE (13CE202).; Proceedings of the Eight International Symposium on Metal Hyd (MH 2002) ; Conference date: 02-09-2002 Through 06-09-2002",

year = "2003",

month = aug,

day = "11",

doi = "10.1016/S0925-8388(03)00227-5",

language = "English",

volume = "356-357",

pages = "429--432",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Hydriding properties of ordered-/disordered-Mg-based ternary Laves phase structures

AU - Hanada, Nobuko

AU - Orimo, Shin Ichi

AU - Fujii, Hironobu

N1 - Funding Information: This work was partially supported by a Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research on Priority Area and on COE (13CE202).

PY - 2003/8/11

Y1 - 2003/8/11

N2 - Ternary Laves phase structures with compositions MgYNi4, MgCaNi4 and CaYNi4 were prepared, and the relationship between the structures and hydriding properties was studied in detail. Only in MgYNi4 are Mg and Y found to be ordered and a plateau pressure is clearly observed in the P-C isotherm during the dehydriding process. In MgCaNi4, however, Mg and Ca are disordered, and hydrogen content of MgCaNi4 is ~30% larger than that of MgYNi4. Control of their order/disorder in Laves phase structures may provide the hydriding properties with higher hydrogen concentrations and flatter plateau regions.

AB - Ternary Laves phase structures with compositions MgYNi4, MgCaNi4 and CaYNi4 were prepared, and the relationship between the structures and hydriding properties was studied in detail. Only in MgYNi4 are Mg and Y found to be ordered and a plateau pressure is clearly observed in the P-C isotherm during the dehydriding process. In MgCaNi4, however, Mg and Ca are disordered, and hydrogen content of MgCaNi4 is ~30% larger than that of MgYNi4. Control of their order/disorder in Laves phase structures may provide the hydriding properties with higher hydrogen concentrations and flatter plateau regions.

KW - Hydrogen storage material

KW - Mechanical alloying

KW - Thermal analysis

KW - X-ray diffraction

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U2 - 10.1016/S0925-8388(03)00227-5

DO - 10.1016/S0925-8388(03)00227-5

M3 - Conference article

AN - SCOPUS:0043199583

SN - 0925-8388

VL - 356-357

SP - 429

EP - 432

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

T2 - Proceedings of the Eight International Symposium on Metal Hyd (MH 2002)

Y2 - 2 September 2002 through 6 September 2002

ER -

Hydriding properties of ordered-/disordered-Mg-based ternary Laves phase structures

Abstract

Keywords

ASJC Scopus subject areas

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