Abstract
The thermodynamic stability of tetragonal (t-) ZrO2nanocrystallites below the bulk stability temperature 1200 °C was studied through specially synthesized crystallites that exhibited an extremely slow coarsening rate. The nanocrystallites were mechanically transformed to the monoclinic (m-) structure, and, because the crystallite size was kept below approximately 20 nm, thet-structure was completely recovered solely by thermal treatments between 900 and 1100 °C. These results gave strong evidence to the notion that, for sufficiently small crystallite size, nanocrystallinet-ZrO2is not just kinetically metastable but can be truly thermodynamically more stable than thempolymorph in air below 1200 °C.
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Dates
Type | When |
---|---|
Created | 17 years, 5 months ago (March 5, 2008, 9:39 p.m.) |
Deposited | 1 year, 6 months ago (Feb. 23, 2024, 1:51 a.m.) |
Indexed | 1 year, 3 months ago (May 15, 2024, 2:19 p.m.) |
Issued | 24 years, 6 months ago (March 1, 2001) |
Published | 24 years, 6 months ago (March 1, 2001) |
Published Online | 12 years, 9 months ago (Nov. 26, 2012) |
Published Print | 24 years, 6 months ago (March 1, 2001) |
@article{Wu_2001, title={Thermodynamic stability of tetragonal zirconia nanocrystallites}, volume={16}, ISSN={2044-5326}, url={http://dx.doi.org/10.1557/jmr.2001.0114}, DOI={10.1557/jmr.2001.0114}, number={3}, journal={Journal of Materials Research}, publisher={Springer Science and Business Media LLC}, author={Wu, Nae-Lih and Wu, Ton-Fon and Rusakova, Irene A.}, year={2001}, month=mar, pages={666–669} }