Effect of grain size on diffusion-induced grain-boundary migration in Ba(Zn{sub 1/3}Nb{sub 2/3})O{sub 3} ceramics
Journal Article
·
· Journal of the American Ceramic Society
- Seoul National Univ. (Korea, Republic of). Dept. of Inorganic Materials Engineering
Diffusion-induced grain-boundary migration (DIGM) in Ba(Zn{sub 1/3}Nb{sub 2/3})O{sub 3} (BZN) ceramics was investigated with small (3.0 {micro}m) and large (31.4 {micro}m) grain size specimens. The specimens were embedded in Nb{sub 2}O{sub 5} or ZnO powders and then heat-treated at 1,250 and 1,310 C, respectively. The grain boundaries of the small grain size specimens were immobile, while those of the large grain size specimens migrated away from their centers of curvature. From the observed difference in migration behavior depending on grain size, the magnitude of the driving force for the DIGM was estimated.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 253579
- Journal Information:
- Journal of the American Ceramic Society, Vol. 79, Issue 5; Other Information: PBD: May 1996
- Country of Publication:
- United States
- Language:
- English
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