Abstract
ZrO 2 polycrystals, partially stabilized by 2 to 7 mol% Y 2 O 3 , were arc-melted and rapidly quenched using an arc-imaging furnace with a hammer-anvil unit. Some of the specimens were further annealed at 1700° C for 3 h in air. The phases and the microstructures of these ZrO 2 -Y 2 O 3 polycrystals were examined through X-ray diffraction and transmission electron microscopy. Special emphasis was placed upon the examination of the microstructure of the metastable tetragonal phase (t′ phase) which was formed by a diffusionless transformation of the high-temperature cubic phase. It was found that the t′ phase exhibits a twinned and mosaic structure made of alternating layers of twin-related variants. A comparison of the present experimental results with other related works has also been made.
Original language | English |
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Pages (from-to) | 2689-2692 |
Number of pages | 4 |
Journal | Journal of Materials Science |
Volume | 23 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1988 Jan 1 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering