J. Phys. Colloques
Volume 46, Numéro C10, Décembre 1985Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
|Page(s)||C10-549 - C10-552|
J. Phys. Colloques 46 (1985) C10-549-C10-552
INTERNAL FRICTION IN PARTIALLY STABILIZED ZIRCONIAK. MATSUSHITA1, T. OKAMOTO1 and M. SHIMADA2
1 The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka, Japan
2 Department of Applied Chemistry, Faculty of Engineering, Tohoku University, Sendai, Miyagi, Japan
Internal friction was measured by the flexural vibration method at 1-6 KHz. Internal friction peaks in partially stabilized zirconia with Y2O3 or Nd2O3 are observed at about 200 °C. The intensity of these peaks increases with increasing Y203, La2O3, Nd2O3, La2O3 or CeO2 content. Both internal friction peaks appearing on heating and on cooling are reversible without temperature hysteresis. From the frequency dependence of the peak temperature, the activation energy for the relaxation relating to the peak is 80-90 KJ/mol. It is concluded that these peaks are associated with stress induced oxygen ion movement.