Enhanced Phase Stability for Tetragonal Zirconia in Precipitation Synthesis
- 20 December 2000
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 83 (12) , 3225-3227
- https://doi.org/10.1111/j.1151-2916.2000.tb01713.x
Abstract
Tetragonal ZrO2 nanocrystallites—with or without yttria (3 mol%) doping—have been synthesized via a precipitation process in which the hydrous oxide precipitate reacts with hexamethyldisilazane (HMDS) vapor before calcination. The nanocrystallites are formed and retain a tetragonal structure for hours after calcination at temperatures of 300°–1100°C. The enhanced structural metastability has been attributed to the combined effect of suppressed grain growth and reduced surface energy that results from the HMDS treatment.Keywords
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