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- Title
Solid Solubility and Precipitation in a Single-Crystal Alumina-Zirconia System.
- Authors
Stough, Matthew A.; Hellmann Jr., John R.
- Abstract
Solid solubility was examined in Zr-doped sapphire and Al-doped yttria-stabilized zirconia (YSZ) single crystals from 1200° to 1600°C. Specimens were fabricated via ion implantation of single crystals, followed by annealing in air. Secondary ion mass spectroscopy (SIMS) was used to quantify solute redistribution during annealing. Comparison of SIMS results with analytical electron microscopy (AEM) revealed an alumina solubility of 0.2-0.3 wt% in zirconia, and a zirconia solubility of 0.004-0.027 wt% in alumina. Direct imaging of zirconia precipitates revealed that tetragonal zirconia precipitates from supersaturated sapphire with the following orientation relationship: (100)[sub tetragonal] (0001)[sub sapphire] and [0&1macr;1][sub tetragonal] [1&2macr;10][sub sapphire].
- Subjects
ALUMINUM crystals; ZIRCONIUM compounds; SOLID solutions; PRECIPITATION (Chemistry)
- Publication
Journal of the American Ceramic Society, 2002, Vol 85, Issue 12, p2895
- ISSN
0002-7820
- Publication type
Article
- DOI
10.1111/j.1151-2916.2002.tb00553.x