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Designing particle sizing and packing for flowability and sintered mechanical strength

2010Journal article Open access
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dc.contributor.authorSilva, Abílio P.
dc.contributor.authorPinto, Deesy G.
dc.contributor.authorSegadães, A M
dc.contributor.authorDevezas, Tessaleno
dc.date.accessioned2022-12-05T10:40:35Z
dc.date.available2022-12-05T10:40:35Z
dc.date.issued2010
dc.description.abstractIn this work, alumina powders in five different commercially available size ranges were used to prepare various refractory castable mixtures, defined using the statistical design of mixture experiments (STATISTICA, StatSoft Inc.) and the EMMA 3.3 software (Elkem Materials). Those mixtures were characterized for packing density, Andreasen particle size distribution modulus (q), flowability and after sintering properties, in order to investigate the relationships between these variables. The optimization of matrix and aggregate sizes and matrix-aggregate proportion, subjected to different property requirements, brought to light the relationships between q, specific surface area (SSA) and maximum paste thickness (MPT). Those relationships were investigated for three fundamental processing steps, namely, dry powders, fresh paste and consolidated dried and sintered bodies. The optimized all-alumina castable was found to require 47.5wt.% of a fine size matrix with high flowability, which provides the necessary flow bed for 52.5wt.% of coarse aggregates, resulting in a gap-sized particle size distribution, and presented a fresh paste flowability index above 130% with minimum added water (28mg/m2) and sintered modulus of rupture above 50MPa.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.jeurceramsoc.2009.12.017pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/12440
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectE. Refractoriespt_PT
dc.subjectParticle packingpt_PT
dc.titleDesigning particle sizing and packing for flowability and sintered mechanical strengthpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FCTM%2F66302%2F2006/PT
oaire.citation.endPage2962pt_PT
oaire.citation.issue14pt_PT
oaire.citation.startPage2955pt_PT
oaire.citation.titleJournal of the European Ceramic Societypt_PT
oaire.citation.volume30pt_PT
oaire.fundingStream5876-PPCDTI
person.familyNameSilva
person.familyNamePinto
person.familyNameSegadães
person.familyNameDevezas
person.givenNameAbilio
person.givenNameDeesy
person.givenNameAna Maria
person.givenNameTessaleno
person.identifier.ciencia-idD314-9C94-0B0F
person.identifier.ciencia-idF014-D3E5-5C2E
person.identifier.ciencia-idF21F-31FB-D0F3
person.identifier.ciencia-id2F16-EE48-E318
person.identifier.orcid0000-0002-2100-7223
person.identifier.orcid0000-0003-2218-1343
person.identifier.orcid0000-0001-6465-620X
person.identifier.orcid0000-0002-7993-4919
person.identifier.ridO-1474-2013
person.identifier.ridL-3270-2013
person.identifier.ridE-4499-2013
person.identifier.ridF-7479-2016
person.identifier.scopus-author-id8540933900
person.identifier.scopus-author-id35362905700
person.identifier.scopus-author-id56429804700
person.identifier.scopus-author-id6602800227
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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