| Full text | |
| Author(s): |
Felix, Anderson A.
;
Bezzon, Vinicius D. N.
;
Orlandi, Marcelo O.
;
Vengust, Damjan
;
Spreitzer, Matjaz
;
Longo, Elson
;
Suvorov, Danilo
;
Varela, Jose A.
Total Authors: 8
|
| Document type: | Journal article |
| Source: | Journal of the European Ceramic Society; v. 37, n. 1, p. 129-136, JAN 2017. |
| Web of Science Citations: | 20 |
| Abstract | |
Phase stability and microstructure evolution of polycrystalline CaCu3Ti4O12 (CCTO) ceramics were studied by controlling the partial pressure of oxygen (from a poor to an oxygen rich atmosphere) during the sintering process at high temperatures. The samples were analyzed by X-ray powder diffraction, scanning electron microscopy and X-ray energy dispersive spectroscopy. Our results show that the oxygen partial pressure during the sintering process is an important parameter that controls the phase stability, non-stoichiometry, and decomposition process of the CCTO phase as well as the densification and grain growth mechanisms on these polycrystalline ceramics. These results provided us further insight into the important role of copper reduction and copper/oxygen diffusion on the crystalline structure and morphological characteristics of polycrystalline CCTO ceramics. (C) 2016 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 09/00367-6 - Study of Properties of CaCu3Ti4O12 Nanostructured Films. |
| Grantee: | Anderson André Felix |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 13/14647-6 - Gas sensors based on p-type metal semiconductor oxides: in-situ and operando advanced studies |
| Grantee: | Anderson André Felix |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 13/07296-2 - CDMF - Center for the Development of Functional Materials |
| Grantee: | Elson Longo da Silva |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |
| FAPESP's process: | 12/51195-3 - Modeling effects of sensor response of semiconducting oxide with functionalized nanoparticles |
| Grantee: | José Arana Varela |
| Support Opportunities: | Regular Research Grants |