| Full text | |
| Author(s): |
Total Authors: 2
|
| Affiliation: | [1] Instituto de Pesquisas Energéticas e Nucleares. Centro de Ciência e Tecnologia de Materiais
[2] Instituto de Pesquisas Energéticas e Nucleares. Centro de Ciência e Tecnologia de Materiais
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Cerâmica; v. 57, n. 342, p. 244-253, 2011-06-00. |
| Abstract | |
BaZr0.8Y0.2O3-δprotonic conductors, prepared by the ceramic route, were pressed and sintered with ZnO and B2O3 sintering aids. The sintered pellets were analyzed by X-ray diffraction and impedance spectroscopy. Polished and thermally etched surfaces of the pellets were observed in a scanning probe microscope. The highest values of apparent density, 95%T.D., were obtained with 2 and 5 wt.% ZnO. The lowest value of electrical resistivity was evaluated in the yttrium-doped barium zirconate compounds with 5 wt.% ZnO. Boron oxide and zinc oxide sintering aids were efficient to improve the apparent density as well as the electrical conductivity of BaZr0.8Y0.2O3-δprotonic conductors. (AU) | |
| FAPESP's process: | 05/53241-9 - Study of intergranular phenomena in ceramic materials |
| Grantee: | Reginaldo Muccillo |
| Support Opportunities: | Research Projects - Thematic Grants |