Synthesis by high-energy ball milling of MgH2-TiFe composites for hydrogen storage

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dc.contributor.authorLEAL NETO, RICARDO M.
dc.contributor.authorSILVA, RAFAEL de A.
dc.contributor.authorFLORIANO, RICARDO
dc.contributor.authorCOUTINHO, GRAZIELE C.S.
dc.contributor.authorFALCAO, RAILSON B.
dc.contributor.authorLEIVA, DANIEL R.
dc.contributor.authorBOTTA, WALTER J.
dc.coverageInternacionalpt_BR
dc.date.accessioned2017-10-17T16:32:05Z
dc.date.available2017-10-17T16:32:05Z
dc.date.issued2017pt_BR
dc.description.abstractThe aim of this work is to investigate the influence of some processes variables on the microstructure and hydrogen absorption kinetics of MgH2 - X wt.% TiFe composites. Samples were synthesized by high-energy ball milling in a planetary (X = 40, 50, 60) and shaker mill (X = 40) under high-purity argon atmosphere. Commercial MgH2 instead of Mg powder was used in order to reduce adherence on the vial and balls. TiFe powder was previously produced by ball milling a mixture of TiH2 and Fe powders followed by a reaction synthesis at 600ºC. Milled composites samples were characterized by XRD and SEM analysis. Milling time was preliminary investigated (X = 40) in the planetary ball mill (6 to 36h). TiFe particle size reduction was shown to be difficult since they are surrounded by MgH2 matrix. Strong particle reduction was obtained by using a shaker mill only for 2 hours and adding cyclohexane as process control agent. No reaction between MgH2 and TiFe compound was observed in any milled sample. Hydrogen absorption kinetics measurements of the as-milled samples were conducted on an Sieverts' type apparatus at room temperature after hydrogen desorption at 350ºC under vacuum. The best hydrogen kinetics (3 wt% at the first hour) was attained by the planetary milled sample (36 h). Higher hydrogen capacity was observed for the sample milled in the shaker mill (4.0 wt.%), but only after 13h.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorshipIDFAPESP: 01/03961-4; 07/50018-2pt_BR
dc.format.extent13-18pt_BR
dc.identifier.citationLEAL NETO, RICARDO M.; SILVA, RAFAEL de A.; FLORIANO, RICARDO; COUTINHO, GRAZIELE C.S.; FALCAO, RAILSON B.; LEIVA, DANIEL R.; BOTTA, WALTER J. Synthesis by high-energy ball milling of MgH2-TiFe composites for hydrogen storage. <b>Materials Science Forum</b>, v. 899, p. 13-18, 2017. DOI: <a href="https://dx.doi.org/10.4028/www.scientific.net/MSF.899.13">10.4028/www.scientific.net/MSF.899.13</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/27919.
dc.identifier.doi10.4028/www.scientific.net/MSF.899.13pt_BR
dc.identifier.issn1662-9752pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-5104-7392
dc.identifier.percentilfien
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/27919
dc.identifier.vol899pt_BR
dc.relation.ispartofMaterials Science Forumpt_BR
dc.rightsopenAccesspt_BR
dc.subjectmilling
dc.subjecthydrogen storage
dc.subjectmagnesium hydrides
dc.subjectcomposite materials
dc.subjectiron base alloys
dc.subjecttitanium
dc.titleSynthesis by high-energy ball milling of MgH2-TiFe composites for hydrogen storagept_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorRAILSON BOLSONI FALCÃO
ipen.autorGRAZIELE CRISTIANE SECO COUTINHO
ipen.autorRICARDO MENDES LEAL NETO
ipen.codigoautor5980
ipen.codigoautor11712
ipen.codigoautor520
ipen.contributor.ipenauthorRAILSON BOLSONI FALCÃO
ipen.contributor.ipenauthorGRAZIELE CRISTIANE SECO COUTINHO
ipen.contributor.ipenauthorRICARDO MENDES LEAL NETO
ipen.date.recebimento17-10pt_BR
ipen.identifier.fiSem F.I.pt_BR
ipen.identifier.ipendoc23231pt_BR
ipen.identifier.ods7
ipen.type.genreArtigo
relation.isAuthorOfPublicatione9bb2aa8-1c3e-4659-911b-f73fd95a5e2d
relation.isAuthorOfPublication668c4283-36ca-4224-8a8b-74b4dd9eef94
relation.isAuthorOfPublicationb5e83d03-1f9c-4e57-8e02-628a903c95f8
relation.isAuthorOfPublication.latestForDiscoveryb5e83d03-1f9c-4e57-8e02-628a903c95f8
sigepi.autor.atividadeLEAL NETO, RICARDO M.:520:730:Spt_BR
sigepi.autor.atividadeCOUTINHO, GRAZIELE C.S.:11712:730:Npt_BR
sigepi.autor.atividadeFALCAO, RAILSON B.:5980:730:Npt_BR
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