| Numéro |
J. Phys. IV France
Volume 10, Numéro PR6, April 2000
The Sixth Japan-France Materials Science SeminarJFMSS-6 Microstructural Design for Improved Mechanical Behaviour of Advanced Materials |
|
|---|---|---|
| Page(s) | Pr6-157 - Pr6-162 | |
| DOI | https://doi.org/10.1051/jp4:2000627 | |
The Sixth Japan-France Materials Science Seminar
JFMSS-6
Microstructural Design for Improved Mechanical Behaviour of Advanced Materials
J. Phys. IV France 10 (2000) Pr6-157-Pr6-162
DOI: 10.1051/jp4:2000627
Department of Materials Science, The Universify of Tokyo, Bunkyo-ku Hongo 7-3-1, Tokyo 113-8656, Japan
© EDP Sciences 2000
JFMSS-6
Microstructural Design for Improved Mechanical Behaviour of Advanced Materials
J. Phys. IV France 10 (2000) Pr6-157-Pr6-162
DOI: 10.1051/jp4:2000627
Grain boundary-related high temperature plasticity in oxide ceramics : The effect of cation doping
T. SakumaDepartment of Materials Science, The Universify of Tokyo, Bunkyo-ku Hongo 7-3-1, Tokyo 113-8656, Japan
Abstract
High-temperature plastic flow in oxide ceramics is controlled by grain boundary diffusion of the constituent ions in a fairly wide temperature and strain rate region. In such deformation conditions, the plastic flow is very sensitive to the grain boundary segregation of a dopant cation. Two typical examples of the dopant effect, high-temperature creep resistance in high-purity, polycrystalline Al2O3 and tensile ductility in SiO2-doped tetragonal zirconia polycrystal are briefly introduced in this paper.
© EDP Sciences 2000