Thermal stability of hydrides of magnesium-transition metal system prepared under a high pressure

H. Kakuta; A. Kamegawa; H. Takamura; M. Okada

doi:10.4028/www.scientific.net/msf.350-351.329

Thermal stability of hydrides of magnesium-transition metal system prepared under a high pressure

H. Kakuta, A. Kamegawa, H. Takamura, M. Okada

ENG - Materials Science

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

30 Citations (Scopus)

Abstract

Phases present and thermal stability of synthesized hydrides of Mg-TM-H systems (TM = Co and Ni) by preparing under a high pressure of 5 GPa using an anvil-type apparatus were studied. The MgNi₂ phase with a novel crystal structure was formed at 1073 K under 5 GPa In addition, for MgH₂- Ni system, two novel phases with a new composition of Mg-64 at% Ni, and Mg-55 at% Ni were formed. Using an additional hydrogen source to supply enough hydrogen, the volume fraction of the new phase with a composition of Mg-55 at%Ni increased, and the other phase vanished. This Mg-Ni-H compound was thermally stable up to 498K under an Ar atmosphere of 0.5 MPa.

Original language	English
Pages (from-to)	329-332
Number of pages	4
Journal	Materials Science Forum
Volume	350
DOIs	https://doi.org/10.4028/www.scientific.net/msf.350-351.329
Publication status	Published - 2000
Event	Proceedings of the 1st Nagaoka International Workshop on Magnesium Platform Science and Technology 2000 - Nagaoka, Jpn Duration: 2000 Jul 27 → 2000 Jul 29

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Thermal stability of hydrides of magnesium-transition metal system prepared under a high pressure",

abstract = "Phases present and thermal stability of synthesized hydrides of Mg-TM-H systems (TM = Co and Ni) by preparing under a high pressure of 5 GPa using an anvil-type apparatus were studied. The MgNi2 phase with a novel crystal structure was formed at 1073 K under 5 GPa In addition, for MgH2- Ni system, two novel phases with a new composition of Mg-64 at% Ni, and Mg-55 at% Ni were formed. Using an additional hydrogen source to supply enough hydrogen, the volume fraction of the new phase with a composition of Mg-55 at%Ni increased, and the other phase vanished. This Mg-Ni-H compound was thermally stable up to 498K under an Ar atmosphere of 0.5 MPa.",

author = "H. Kakuta and A. Kamegawa and H. Takamura and M. Okada",

note = "Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; Proceedings of the 1st Nagaoka International Workshop on Magnesium Platform Science and Technology 2000 ; Conference date: 27-07-2000 Through 29-07-2000",

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T1 - Thermal stability of hydrides of magnesium-transition metal system prepared under a high pressure

AU - Kakuta, H.

AU - Kamegawa, A.

AU - Takamura, H.

AU - Okada, M.

PY - 2000

Y1 - 2000

N2 - Phases present and thermal stability of synthesized hydrides of Mg-TM-H systems (TM = Co and Ni) by preparing under a high pressure of 5 GPa using an anvil-type apparatus were studied. The MgNi2 phase with a novel crystal structure was formed at 1073 K under 5 GPa In addition, for MgH2- Ni system, two novel phases with a new composition of Mg-64 at% Ni, and Mg-55 at% Ni were formed. Using an additional hydrogen source to supply enough hydrogen, the volume fraction of the new phase with a composition of Mg-55 at%Ni increased, and the other phase vanished. This Mg-Ni-H compound was thermally stable up to 498K under an Ar atmosphere of 0.5 MPa.

AB - Phases present and thermal stability of synthesized hydrides of Mg-TM-H systems (TM = Co and Ni) by preparing under a high pressure of 5 GPa using an anvil-type apparatus were studied. The MgNi2 phase with a novel crystal structure was formed at 1073 K under 5 GPa In addition, for MgH2- Ni system, two novel phases with a new composition of Mg-64 at% Ni, and Mg-55 at% Ni were formed. Using an additional hydrogen source to supply enough hydrogen, the volume fraction of the new phase with a composition of Mg-55 at%Ni increased, and the other phase vanished. This Mg-Ni-H compound was thermally stable up to 498K under an Ar atmosphere of 0.5 MPa.

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ER -

Thermal stability of hydrides of magnesium-transition metal system prepared under a high pressure

Abstract

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