Brasil
| Otro
Densification and coarsening of SnO2-based materials containing manganese oxide
| dc.contributor | Universidade Estadual Paulista (UNESP) | |
| dc.creator | Gouvea, D. | |
| dc.creator | Smith, A. | |
| dc.creator | Bonnet, J. P. | |
| dc.creator | Varela, José Arana | |
| dc.date | 2014-05-20T15:22:08Z | |
| dc.date | 2016-10-25T17:55:48Z | |
| dc.date | 2014-05-20T15:22:08Z | |
| dc.date | 2016-10-25T17:55:48Z | |
| dc.date | 1998-01-01 | |
| dc.date.accessioned | 2017-04-05T23:35:13Z | |
| dc.date.available | 2017-04-05T23:35:13Z | |
| dc.identifier | Journal of the European Ceramic Society. Oxford: Elsevier B.V., v. 18, n. 4, p. 345-351, 1998. | |
| dc.identifier | 0955-2219 | |
| dc.identifier | http://hdl.handle.net/11449/33184 | |
| dc.identifier | http://acervodigital.unesp.br/handle/11449/33184 | |
| dc.identifier | 10.1016/S0955-2219(97)00127-1 | |
| dc.identifier | WOS:000072879300009 | |
| dc.identifier | http://dx.doi.org/10.1016/S0955-2219(97)00127-1 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/877358 | |
| dc.description | The 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.language | eng | |
| dc.publisher | Elsevier B.V. | |
| dc.relation | Journal of the European Ceramic Society | |
| dc.rights | info:eu-repo/semantics/closedAccess | |
| dc.title | Densification and coarsening of SnO2-based materials containing manganese oxide | |
| dc.type | Otro |