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Solid Solubility and Precipitation in a Single‐Crystal Alumina–Zirconia System
Author(s) -
Stough Matthew A.,
Hellmann John R.
Publication year - 2002
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2002.tb00553.x
Subject(s) - materials science , solubility , cubic zirconia , tetragonal crystal system , sapphire , yttria stabilized zirconia , annealing (glass) , precipitation , secondary ion mass spectrometry , analytical chemistry (journal) , solid solution , chemical engineering , mineralogy , crystallography , ion , crystal structure , metallurgy , ceramic , chemistry , chromatography , optics , laser , physics , organic chemistry , meteorology , engineering
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) tetragonal ‖ (0001) sapphire and [01¯1] tetragonal ‖ [12¯10] sapphire .