Anisotropy of crystallite growth during sintering of SnO2 xerogels

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dc.contributor.authorBrito, G. E S [UNESP]
dc.contributor.authorPulcinelli, Sandra Helena [UNESP]
dc.contributor.authorSantilli, Celso Valentim [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:18:08Z
dc.date.available2014-05-27T11:18:08Z
dc.date.issued1996-12-01
dc.description.abstractThe crytallite and pore-size evolution during isothermal sintering (400 ≤ T ≤ 700°C) of SnO2 xerogels was studied by X-ray line broadening and nitrogen adsorption-desorption isotherms. The experimental results show a strong anisotropy of crystallite growth between [110] and [101] directions. The preferential growth at [101] is followed by an increase in the mean pore size, reduction of the specific surface area and invariance of total pore volume. This behaviour is typical of grain coalescence sintering. The kinetic analysis of experimental results suggests that the crystallite coalescence at [101] is governed by lattice diffusion. The strong anisotropy of the growth causes pore-size distribution broadening, hindering the macroscopic shrinkage of the compact during sintering. © 1996 Chapman & Hall.en
dc.description.affiliationInstituto de Química UNESP, P.O. Box 355, Araraquara, SP, 14800-900
dc.description.affiliationUnespInstituto de Química UNESP, P.O. Box 355, Araraquara, SP, 14800-900
dc.format.extent4087-4092
dc.identifierhttp://dx.doi.org/10.1007/BF00352672
dc.identifier.citationJournal of Materials Science, v. 31, n. 15, p. 4087-4092, 1996.
dc.identifier.doi10.1007/BF00352672
dc.identifier.issn0022-2461
dc.identifier.lattes9971202585286967
dc.identifier.lattes5584298681870865
dc.identifier.orcid0000-0002-8356-8093
dc.identifier.scopus2-s2.0-0030214410
dc.identifier.urihttp://hdl.handle.net/11449/64886
dc.identifier.wosWOS:A1996VB33100023
dc.language.isoeng
dc.relation.ispartofJournal of Materials Science
dc.relation.ispartofjcr2.993
dc.relation.ispartofsjr0,807
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAdsorption
dc.subjectAnisotropy
dc.subjectCoalescence
dc.subjectCrystal growth
dc.subjectCrystal lattices
dc.subjectDesorption
dc.subjectDiffusion
dc.subjectKinetic theory
dc.subjectReduction
dc.subjectShrinkage
dc.subjectSintering
dc.subjectCrystallite growth
dc.subjectGrain coalescence sintering
dc.subjectIsothermal sintering
dc.subjectNitrogen adsorption desorption isotherms
dc.subjectPore size distribution
dc.subjectSpecific surface area
dc.subjectX ray line broadening
dc.subjectXerogels
dc.subjectGels
dc.titleAnisotropy of crystallite growth during sintering of SnO2 xerogelsen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
unesp.author.lattes9971202585286967
unesp.author.lattes5584298681870865[3]
unesp.author.orcid0000-0002-8356-8093[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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