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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/40180
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dc.contributor.authorde Oliveira, A. L. M.-
dc.contributor.authorFerreira, J. M.-
dc.contributor.authorSilva, Marcia R. S.-
dc.contributor.authorde Souza, Soraia C.-
dc.contributor.authorVieira, F. T. G.-
dc.contributor.authorLongo, Elson-
dc.contributor.authorSouza, A. G.-
dc.contributor.authorSantos, Ieda M. G.-
dc.date.accessioned2014-05-20T15:30:53Z-
dc.date.accessioned2016-10-25T18:06:34Z-
dc.date.available2014-05-20T15:30:53Z-
dc.date.available2016-10-25T18:06:34Z-
dc.date.issued2009-07-01-
dc.identifierhttp://dx.doi.org/10.1007/s10973-009-0244-8-
dc.identifier.citationJournal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 97, n. 1, p. 167-172, 2009.-
dc.identifier.issn1388-6150-
dc.identifier.urihttp://hdl.handle.net/11449/40180-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/40180-
dc.description.abstractNiWO4 and ZnWO4 were synthesized by the polymeric precursor method at low temperatures with zinc or nickel carbonate as secondary phase. The materials were characterized by thermal analysis (TG/DTA), infrared spectroscopy, UV-Vis spectroscopy and X-ray diffraction. NiWO4 was crystalline after calcination at 350 A degrees C/12 h while ZnWO4 only crystallized after calcination at 400 A degrees C for 2 h. Thermal decomposition of the powder precursor of NiWO4 heat treated for 12 h had one exothermic transition, while the precursor heat treated for 24 h had one more step between 600 and 800 A degrees C with a small mass gain. Powder precursor of ZnWO4 presented three exothermic transitions, with peak temperatures and mass losses higher than NiWO4 has indicating that nickel made carbon elimination easier.en
dc.format.extent167-172-
dc.language.isoeng-
dc.publisherSpringer-
dc.sourceWeb of Science-
dc.subjectWolframiteen
dc.subjectZnWO4en
dc.subjectNiWO4en
dc.subjectThermal treatmenten
dc.subjectOrder-disorderen
dc.titleInfluence of the thermal treatment in the crystallization of NiWO4 and ZnWO4en
dc.typeoutro-
dc.contributor.institutionUniversidade Federal da Paraíba (UFPB)-
dc.contributor.institutionCentro Federal de Educação Tecnológica (CEFET)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniversidade Federal da Paraíba (UFPB), Depto Quim, Lab Combust & Mat, Joao Pessoa, PB, Brazil-
dc.description.affiliationCEFETPB, Ctr Fed Educ Tecnol Paraiba, COAMA, Joao Pessoa, PB, Brazil-
dc.description.affiliationUNESP, CMDMC, Ctr Multidisciplinar Desenvolvimento Mat Ceram, Araraquara, SP, Brazil-
dc.description.affiliationUnespUNESP, CMDMC, Ctr Multidisciplinar Desenvolvimento Mat Ceram, Araraquara, SP, Brazil-
dc.identifier.doi10.1007/s10973-009-0244-8-
dc.identifier.wosWOS:000270840800030-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Thermal Analysis and Calorimetry-
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