| Numéro |
J. Phys. Colloques
Volume 46, Numéro C10, Décembre 1985
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
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|---|---|---|
| Page(s) | C10-545 - C10-548 | |
| DOI | https://doi.org/10.1051/jphyscol:198510121 | |
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 46 (1985) C10-545-C10-548
DOI: 10.1051/jphyscol:198510121
1 The Institute of Scientific and Industrial Research, Osaka University, Ibaraki , Osaka 567, Japan
2 Department of Applied Chemistry, Faculty of Engineering, Tohoku University, Sendai, Miyagi 980, Japan
J. Phys. Colloques 46 (1985) C10-545-C10-548
DOI: 10.1051/jphyscol:198510121
INTERNAL FRICTION AND MECHANICAL PROPERTIES OF NEW CERAMICS
K. MATSUSHITA1, T. OKAMOTO1 and M. SHIMADA21 The Institute of Scientific and Industrial Research, Osaka University, Ibaraki , Osaka 567, Japan
2 Department of Applied Chemistry, Faculty of Engineering, Tohoku University, Sendai, Miyagi 980, Japan
Abstract
Stress amplitude and temperature dependences of internal friction in polycrystal and single crystal aluminas and aluminas subjected to thermal shock, were measured. Microcracks introduced by water quenching were detected by internal friction measurement. An increase ininternal friction due to softening at the grain boundary in the polycrystal alumina was observed above 600 C. The flexural strength and the hardness decreased with increasing internal friction.