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Titolo:
Hydrogen storage characteristics of magnesium mechanically alloyed with YNi5-xAlx (x=0, 1 and 3) intermetallics
Autore:
Khrussanova, M; Bobet, JL; Terzieva, M; Chevalier, B; Radev, D; Peshev, P; Darriet, B;
Indirizzi:
Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, Bulgaria Bulgarian Acad Sci Sofia Bulgaria BU-1113 Chem, BU-1113 Sofia, Bulgaria Univ Bordeaux 1, CNRS UPR 9048, ICMCB, F-33608 Pessac, France Univ Bordeaux 1 Pessac France F-33608 048, ICMCB, F-33608 Pessac, France
Titolo Testata:
JOURNAL OF ALLOYS AND COMPOUNDS
, volume: 307, anno: 2000,
pagine: 283 - 289
SICI:
0925-8388(20000714)307:<283:HSCOMM>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEHYDRIDING CHARACTERISTICS; ABSORPTION PROPERTIES; COMPOSITE; MIXTURES; BEHAVIOR; KINETICS; SYSTEM;
Keywords:
hydrogen storage materials; energy storage materials; composite materials; rare earth compounds; crystal structure;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Khrussanova, M Bulgarian Acad Sci, Inst Gen & Inorgan Chem, G Bonchev Str,Bldg 11, BU-1113 Sofia, Bulgaria Bulgarian Acad Sci G Bonchev Str,Bldg 11 Sofia Bulgaria BU-1113
Citazione:
M. Khrussanova et al., "Hydrogen storage characteristics of magnesium mechanically alloyed with YNi5-xAlx (x=0, 1 and 3) intermetallics", J ALLOY COM, 307, 2000, pp. 283-289

Abstract

The hydrogen sorption properties of the composite materials Mg+10 wt% YNi5-xAlx (x=0, 1 and 3) prepared by ball milling were studied. In the case of YNi2Al3 addition, mixtures with a nominal content of 1 and 50 wt% of the intermetallic compound were also investigated. The crystal structure of the YNi4Al phase was determined (CaCu5 type structure, a=0.4940 nm, c=0.4036 nm). It was established that the presence of YNi4Al or YNi2Al3 in the composites significantly improved the kinetics of hydrogen absorption and desorption, whereas YNi5 did not affect the sorption process. An explanation of the results obtained, based on the catalytic effect of the YNi4Al and YNi2Al3 intermetallics is proposed. It is shown that a higher intermetallic content of the composites is accompanied by: (i) an increase of the initial rate oftheir hydriding, (ii) a decrease of the maximum hydrogen capacity, and (iii) an increasing of the latent period of dehydriding. (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 01/06/20 alle ore 02:35:02