Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1474955 | Journal of the European Ceramic Society | 2010 | 5 Pages |
Abstract
This paper reports the preparation of nanometric powders of 3.5 mol% Y2O3-doped ZrO2, with controlled microstructure, by the spray pyrolysis process, assisted by ultrasonic atomizer, at relatively low temperature. As-prepared powders were found crystalline and consisted of dense and chemically homogeneous spherical particles. Conventional sintering at 1500 °C for 2 h in air yields dense ceramics of 83 nm of average grain size. The electrical properties of electrode/electrolyte interface were determined by impedance spectroscopy measurements before, during and after thermal ageing for 2000 h at 700 °C in dry air. The effect of thermal ageing on the electrical responses of the ceramic and interfaces with platinum electrodes was investigated.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
R.A. Rocha, E.N.S. Muccillo, L. Dessemond, E. Djurado,