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Titolo:
Hydrogen storage alloy of Mg2NiH4 hydride produced by hydriding combustionsynthesis from powder of mixture metal
Autore:
Li, LQ; Akiyama, T; Yagi, J;
Indirizzi:
Tohoku Univ, Inst Adv Mat Proc, Aoba Ku, Sendai, Miyagi 9808577, Japan Tohoku Univ Sendai Miyagi Japan 9808577 Ku, Sendai, Miyagi 9808577, Japan Miyagi Natl Coll Technol, Miyagi 9811239, Japan Miyagi Natl Coll Technol Miyagi Japan 9811239 nol, Miyagi 9811239, Japan Res Inst Elect Light Source Mat, Nanjing 210015, Peoples R China Res Inst Elect Light Source Mat Nanjing Peoples R China 210015 s R China
Titolo Testata:
JOURNAL OF ALLOYS AND COMPOUNDS
, volume: 308, anno: 2000,
pagine: 98 - 103
SICI:
0925-8388(20000810)308:<98:HSAOMH>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
X-RAY-DIFFRACTION; KINETICS; PRESSURE;
Keywords:
hydrogen storage materials; intermetallics; energy storage materials; X-ray diffraction; gas-solid reaction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Yagi, J Tohoku Univ, Inst Adv Mat Proc, Aoba Ku, Katahria 1-1,2 Chome, Sendai, Miyagi 9808577, Japan Tohoku Univ Katahria 1-1,2 Chome Sendai Miyagi Japan 9808577 Japan
Citazione:
L.Q. Li et al., "Hydrogen storage alloy of Mg2NiH4 hydride produced by hydriding combustionsynthesis from powder of mixture metal", J ALLOY COM, 308, 2000, pp. 98-103

Abstract

As previous results, we reported that hydrogen storage alloy of Mg2NiH4 was produced by process of hydriding combustion synthesis in laboratory scaleand regardless of the compressive pressure of the compacts from 140 MPa, 280 MPa, 550 MPa to 1.10 GPa. In present work, at first, we study the effectof the hydrogen atmosphere on the synthesis of Mg2NiH4 by this process. Itis confirmed that the hydrogen atmosphere in the heating period plays an important role to the synthesis of Mg2NiH4, in the cooling period due to theexpansion of the compact in the heating period resulted from the hydridingreaction of Mg+H-2-->MgH2. Then, we use powder of the mixture metal of magnesium and nickel as raw material directly and use lower pressures of hydrogen from 2.0 MPa, 1.0 MPa and to 0.5 MPa to produce Mg2NiH4. It is found that pure Mg2Ni4 from X-ray diffraction (XRD) analysis results can be produced at only 1.0 MPa hydrogen atmosphere when powder of mixture metal was used, which is much lower than that of 4.0 MPa when compact of mixture metal was used. (C) 2000 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 08:25:15