Alumina crucibles from free dispersant suspensions

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dc.contributor.authorSANTOS, S.C.
dc.contributor.authorMARTINS, A.S.
dc.contributor.authorARAUJO, T.L.
dc.contributor.authorRODRIGUES JUNIOR, O.
dc.contributor.authorCAMPOS, L.L.
dc.coverageInternacional
dc.date.accessioned2025-02-26T14:43:53Z
dc.date.available2025-02-26T14:43:53Z
dc.date.issued2024
dc.description.abstractBackground: Powder technology provides conditions to control particle-particle interactions that drive the formation of final-component/material, which also includes the crystalline structure, microstructure and features. Alumina (Al2O3) is the most studied ceramic based material due to its useful properties, disposal, competitive price, and wide technological applicability. This work aims to produce alumina crucibles with controlled size and shape from free dispensant suspensions. These crucibles will be used as containers for the synthesis of new materials for radiation dosimetry. Methods: The Al2O3 powders were characterized by XRD, SEM, PCS, and EPR. The stability of alumina particles in aqueous solvent was evaluated by zeta potential determination as a function of pH. Alumina suspensions with 30 vol% were shaped by slip casting in plaster molds, followed by sintering at 1600oC for 2 h in an air atmosphere. Alumina based crucibles were characterized by SEM and XRD. Results: ɑ-Al2O3 powders exhibited a mean particle diameter size (d50) of 983nm. Besides, the stability of particles in aqueous solvent was achieved at a range of pH from 2.0-6.0, and from 8.5-11.0. EPR spectra revealed two resonance peaks P1 and P2, with g-values of 2.0004 and 2.0022, respectively. The as-sintered ɑ-alumina based crucibles presented uniform shape and controlled size with no apparent defects. In addition, the final microstructure driven by solid-state sintering revealed a dense surface and uniform distribution of grains. Conclusion: The ɑ-Al2O3 crucibles obtained by slip casting of free dispensant alumina suspensions, followed by sintering, exhibited mechanical strength, and controlled shape and size. These crucibles will be useful labwares for the synthesis of new materials for radiation dosimetry.
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIDFAPESP: 18/05982-0; 22/06695-0
dc.description.sponsorshipIDCNPq: 426513/2018-5
dc.description.sponsorshipIDCAPES: 88882.315568/2019-01
dc.format.extent386-401
dc.identifier.citationSANTOS, S.C.; MARTINS, A.S.; ARAUJO, T.L.; RODRIGUES JUNIOR, O.; CAMPOS, L.L. Alumina crucibles from free dispersant suspensions: a useful labware to form advanced powders for radiation dosimetry. <b>Current Materials Science</b>, v. 17, n. 4, p. 386-401, 2024. DOI: <a href="https://dx.doi.org/10.2174/2666145417666230726153437">10.2174/2666145417666230726153437</a>. Disponível em: https://repositorio.ipen.br/handle/123456789/49113.
dc.identifier.doi10.2174/2666145417666230726153437
dc.identifier.fasciculo4
dc.identifier.issn2666-1454
dc.identifier.orcidhttps://orcid.org/0000-0002-6704-1910
dc.identifier.orcidhttps://orcid.org/0000-0001-7137-0613
dc.identifier.percentilfiSem Percentil F.I.
dc.identifier.percentilfiCiteScore11.00
dc.identifier.urihttps://repositorio.ipen.br/handle/123456789/49113
dc.identifier.vol17
dc.language.isoeng
dc.relation.ispartofCurrent Materials Science
dc.rightsclosedAccess
dc.titleAlumina crucibles from free dispersant suspensions
dc.typeArtigo de periódico
dspace.entity.typePublication
ipen.autorSILAS CARDOSO DOS SANTOS
ipen.autorANDRESSA DA SILVA MARTINS
ipen.autorTAINA LIMA ARAUJO
ipen.autorORLANDO RODRIGUES JUNIOR
ipen.autorLETICIA LUCENTE CAMPOS RODRIGUES
ipen.codigoautor6961
ipen.codigoautor15063
ipen.codigoautor15125
ipen.codigoautor322
ipen.codigoautor1195
ipen.contributor.ipenauthorSILAS CARDOSO DOS SANTOS
ipen.contributor.ipenauthorANDRESSA DA SILVA MARTINS
ipen.contributor.ipenauthorTAINA LIMA ARAUJO
ipen.contributor.ipenauthorORLANDO RODRIGUES JUNIOR
ipen.contributor.ipenauthorLETICIA LUCENTE CAMPOS RODRIGUES
ipen.identifier.fiSem F.I.
ipen.identifier.fiCiteScore0.8
ipen.identifier.ipendoc31170
ipen.subtituloa useful labware to form advanced powders for radiation dosimetry
ipen.type.genreArtigo
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relation.isAuthorOfPublication.latestForDiscovery6d1f35e3-57eb-471d-ae82-5f850a99e01b
sigepi.autor.atividadeSILAS CARDOSO DOS SANTOS:6961:330:S
sigepi.autor.atividadeANDRESSA DA SILVA MARTINS:15063:330:N
sigepi.autor.atividadeTAINA LIMA ARAUJO:15125:330:N
sigepi.autor.atividadeORLANDO RODRIGUES JUNIOR:322:330:N
sigepi.autor.atividadeLETICIA LUCENTE CAMPOS RODRIGUES:1195:330:N
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