Structural reinforcement of Nb2O5 in soda-lime borosilicate glasses for nuclear waste immobilization

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dc.contributor.authorSILVA, D.L.C.
dc.contributor.authorSILVA, A.C.
dc.contributor.authorARAUJO, M.S.
dc.contributor.authorMELLO-CASTANHO, S.R.
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL CONGRESS ON CERAMICS, 7th; CONGRESSO BRASILEIRO DE CERÂMICA, 62.pt_BR
dc.date.accessioned2019-02-25T14:00:03Z
dc.date.available2019-02-25T14:00:03Z
dc.date.eventoJune 17-21, 2018pt_BR
dc.description.abstractThe vitrification process has been used for high level nuclear waste (HLW) immobilization for more than 40 years around the word. However, there are still many difficulties involving the radiation effects in the glass matrixes as, for example, crackings that reduce their mechanical and chemical resistance. The impact of Nb2O5 addition in the CaO-Na2O-SiO2-B2O5 glass system was investigated. The glass samples, produced by melting method, were submitted to extreme chemical attacks like the alkaline ISO 695-1984 (E), the acid DIN 12116-1976 and characterized by X-ray diffraction (XRD), Fourier Transformed Infrared Spectroscopy (FTIR) and Raman Spectroscopy. XRD diffraction patterns obtained before the chemical attacks confirmed the vitreous character of the samples. Raman spectra and FTIR spectra obtained after the chemical attacks indicated that the Nb2O5 is well connected to the glass network, supported by the decrease in mass loss after the chemical attacks, as the the Nb2O5 content was raised in the samples. These results are indicative that the chemical resistance of the studied glasses can be improved by increasing the Nb2O5 content. These results show that the process is a promising alternative to produce new family of the appropriate glasses for nuclear wastes immobilization.pt_BR
dc.event.siglaICC; CBCpt_BR
dc.format.extent858-858pt_BR
dc.identifier.citationSILVA, D.L.C.; SILVA, A.C.; ARAUJO, M.S.; MELLO-CASTANHO, S.R. Structural reinforcement of Nb2O5 in soda-lime borosilicate glasses for nuclear waste immobilization. In: INTERNATIONAL CONGRESS ON CERAMICS, 7th; CONGRESSO BRASILEIRO DE CERÂMICA, 62., June 17-21, 2018, Foz do Iguaçu, PR. <b>Abstract...</b> p. 858-858. Disponível em: http://repositorio.ipen.br/handle/123456789/29704.
dc.identifier.orcidaguardandopt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-0155-9100
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/29704
dc.local.eventoFoz do Iguaçu, PRpt_BR
dc.rightsopenAccesspt_BR
dc.titleStructural reinforcement of Nb2O5 in soda-lime borosilicate glasses for nuclear waste immobilizationpt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorMARIANA SILVA DE ARAUJO
ipen.autorSONIA REGINA HOMEM DE MELLO CASTANHO
ipen.autorANTONIO CARLOS DA SILVA
ipen.autorDANILO LOPES COSTA E SILVA
ipen.codigoautor12138
ipen.codigoautor1552
ipen.codigoautor2949
ipen.codigoautor11397
ipen.contributor.ipenauthorMARIANA SILVA DE ARAUJO
ipen.contributor.ipenauthorSONIA REGINA HOMEM DE MELLO CASTANHO
ipen.contributor.ipenauthorANTONIO CARLOS DA SILVA
ipen.contributor.ipenauthorDANILO LOPES COSTA E SILVA
ipen.date.recebimento19-02pt_BR
ipen.event.datapadronizada2018pt_BR
ipen.identifier.ipendoc25492pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication3618926a-f332-4e2e-936e-8f8ceb8abdc5
relation.isAuthorOfPublication421edd64-5958-445c-9f93-1e13aabaa72a
relation.isAuthorOfPublication839a3a2d-55ca-4376-993c-a8279c5cf017
relation.isAuthorOfPublicationf9b5b523-90c6-49de-ba0a-2bee04097634
relation.isAuthorOfPublication.latestForDiscoveryf9b5b523-90c6-49de-ba0a-2bee04097634
sigepi.autor.atividadeSILVA, D.L.C.:11397:720:Spt_BR
sigepi.autor.atividadeSILVA, A.C.:2949:720:Npt_BR
sigepi.autor.atividadeARAUJO, M.S.:12138:720:Npt_BR
sigepi.autor.atividadeMELLO-CASTANHO, S.R.:1552:720:Npt_BR
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