Brasil | Otro
dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorGouvea, D.
dc.creatorSmith, A.
dc.creatorBonnet, J. P.
dc.creatorVarela, José Arana
dc.date2014-05-20T15:22:08Z
dc.date2016-10-25T17:55:48Z
dc.date2014-05-20T15:22:08Z
dc.date2016-10-25T17:55:48Z
dc.date1998-01-01
dc.date.accessioned2017-04-05T23:35:13Z
dc.date.available2017-04-05T23:35:13Z
dc.identifierJournal of the European Ceramic Society. Oxford: Elsevier B.V., v. 18, n. 4, p. 345-351, 1998.
dc.identifier0955-2219
dc.identifierhttp://hdl.handle.net/11449/33184
dc.identifierhttp://acervodigital.unesp.br/handle/11449/33184
dc.identifier10.1016/S0955-2219(97)00127-1
dc.identifierWOS:000072879300009
dc.identifierhttp://dx.doi.org/10.1016/S0955-2219(97)00127-1
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/877358
dc.descriptionThe present work presents results on natural sintering of tin dioxide ceramics, prepared by a chemical route or by conventional mixing and containing manganese (X-Mn = Mn/(Mn + Sn)(atomic) with 0 less than or equal to X(Mn)less than or equal to 0.15). This cation, which is practically insoluble in SnO2 network, stays at the grain surface. During thermal treatment (500 degrees C less than or equal to T-s less than or equal to 1400 degrees C), as long as the manganese surface concentration is lower than a critical value, equal to 5.10(-6) mol m(-2), no densification takes place. As soon as this value is reached, densification and grain growth occur simultaneously. The shrinkage kinetics is fast and high rho/rho(t) values can be obtained (for example. rho/rho(t)=0.95 for T-s=1300 degrees C and X-Mn=0.004). The dependence between manganese content, manganese distribution, grain size and sintering behaviour is also discussed. (C) 1998 Published by Elsevier B.V. Limited.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationJournal of the European Ceramic Society
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleDensification and coarsening of SnO2-based materials containing manganese oxide
dc.typeOtro


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