Hydriding/dehydriding properties of (Mg1-XMx)Ni 2 Laves phase alloys

Naoyoshi Terashita; Seiji Takahashi; Shigeru Tsunokake; Etsuo Akiba

Hydriding/dehydriding properties of (Mg1-XMx)Ni 2 Laves phase alloys

Naoyoshi Terashita, Seiji Takahashi, Shigeru Tsunokake, Etsuo Akiba

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Mg-based Laves phase alloys (Mg_0.7M_0.3)Ni ₂, where M elements were Ca, Nd and Gd were successfully developed. The alloys can be synthesized by a induction melting from intermetallic compounds MgNi₂ and MNi₂ as a source of Mg, Ni and M elements. The crystal structures of the major phases of annealed (Mg _0.7M_0.3)Ni₂ alloys were C15-type for M=Ca and C15_b-type for M=Nd and Gd Laves structures, respectively. The maximum hydrogen contents of the alloys are 1.1-1.7mass% (H/M:0.6∼0.8) under hydrogen pressure of 5MPa at 243∼273K. As the results of measurements of p-c isotherms, in the case of the M=Nd, two step plateaus were clearly observed. After a few hydrogenation/dehydrogenation cycles, the alloys kept C15-type or C15_b-type Laves structures without hydrogen-induced amorphization, disproportionation and decomposition.

Original language	English
Title of host publication	16th World Hydrogen Energy Conference 2006, WHEC 2006
Pages	1438-1441
Number of pages	4
Volume	2
Publication status	Published - 2006
Externally published	Yes
Event	16th World Hydrogen Energy Conference 2006, WHEC 2006 - Lyon, France Duration: Jun 13 2006 → Jun 16 2006

Other

Other	16th World Hydrogen Energy Conference 2006, WHEC 2006
Country/Territory	France
City	Lyon
Period	6/13/06 → 6/16/06

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Fuel Technology

Cite this

@inproceedings{54610b906e95407abe896efa3437c814,

title = "Hydriding/dehydriding properties of (Mg1-XMx)Ni 2 Laves phase alloys",

abstract = "Mg-based Laves phase alloys (Mg0.7M0.3)Ni 2, where M elements were Ca, Nd and Gd were successfully developed. The alloys can be synthesized by a induction melting from intermetallic compounds MgNi2 and MNi2 as a source of Mg, Ni and M elements. The crystal structures of the major phases of annealed (Mg 0.7M0.3)Ni2 alloys were C15-type for M=Ca and C15b-type for M=Nd and Gd Laves structures, respectively. The maximum hydrogen contents of the alloys are 1.1-1.7mass% (H/M:0.6∼0.8) under hydrogen pressure of 5MPa at 243∼273K. As the results of measurements of p-c isotherms, in the case of the M=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.",

author = "Naoyoshi Terashita and Seiji Takahashi and Shigeru Tsunokake and Etsuo Akiba",

year = "2006",

language = "English",

isbn = "9781622765409",

volume = "2",

pages = "1438--1441",

booktitle = "16th World Hydrogen Energy Conference 2006, WHEC 2006",

note = "16th World Hydrogen Energy Conference 2006, WHEC 2006 ; Conference date: 13-06-2006 Through 16-06-2006",

}

TY - GEN

T1 - Hydriding/dehydriding properties of (Mg1-XMx)Ni 2 Laves phase alloys

AU - Terashita, Naoyoshi

AU - Takahashi, Seiji

AU - Tsunokake, Shigeru

AU - Akiba, Etsuo

PY - 2006

Y1 - 2006

N2 - Mg-based Laves phase alloys (Mg0.7M0.3)Ni 2, where M elements were Ca, Nd and Gd were successfully developed. The alloys can be synthesized by a induction melting from intermetallic compounds MgNi2 and MNi2 as a source of Mg, Ni and M elements. The crystal structures of the major phases of annealed (Mg 0.7M0.3)Ni2 alloys were C15-type for M=Ca and C15b-type for M=Nd and Gd Laves structures, respectively. The maximum hydrogen contents of the alloys are 1.1-1.7mass% (H/M:0.6∼0.8) under hydrogen pressure of 5MPa at 243∼273K. As the results of measurements of p-c isotherms, in the case of the M=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.

AB - Mg-based Laves phase alloys (Mg0.7M0.3)Ni 2, where M elements were Ca, Nd and Gd were successfully developed. The alloys can be synthesized by a induction melting from intermetallic compounds MgNi2 and MNi2 as a source of Mg, Ni and M elements. The crystal structures of the major phases of annealed (Mg 0.7M0.3)Ni2 alloys were C15-type for M=Ca and C15b-type for M=Nd and Gd Laves structures, respectively. The maximum hydrogen contents of the alloys are 1.1-1.7mass% (H/M:0.6∼0.8) under hydrogen pressure of 5MPa at 243∼273K. As the results of measurements of p-c isotherms, in the case of the M=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.

UR - http://www.scopus.com/inward/record.url?scp=84875628229&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84875628229&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84875628229

SN - 9781622765409

VL - 2

SP - 1438

EP - 1441

BT - 16th World Hydrogen Energy Conference 2006, WHEC 2006

T2 - 16th World Hydrogen Energy Conference 2006, WHEC 2006

Y2 - 13 June 2006 through 16 June 2006

ER -

Hydriding/dehydriding properties of (Mg1-XMx)Ni 2 Laves phase alloys

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