Ultrafine‐Grained Dense Monoclinic and Tetragonal Zirconia
- 1 July 1994
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 77 (7) , 1706-1710
- https://doi.org/10.1111/j.1151-2916.1994.tb07040.x
Abstract
Nanoparticles of ZrO2 with diameters ranging from 4 to 8 nm were synthesized by gas condensation. As‐prepared n‐ZrO2 particles have a monoclinic and a high‐pressure tetragonal structure depending on size. Pure ZrO2 was sintered to full density under vacuum at 04Tm within the monoclinic phase field. Final grain sizes in theoretically dense pellets are below 60 nm. By sintering below the monoclinic–tetragonal transition temperature, microcracking was completely avoided. Tetragonal ZrO2 stabilized with 3 mol% Y2O3 was prepared by interdiffusion of nanoparticles and sintered to near‐theoretical density.Keywords
This publication has 12 references indexed in Scilit:
- Phase transformation and interface structure of nanocrystalline ZrO2Nanostructured Materials, 1993
- Sintering and Characterization of Polycrystalline Monoclinic, Tetragonal, and Cubic ZirconiaJournal of the American Ceramic Society, 1992
- Sinter-Forging of Nanocrystalline TiO2MRS Proceedings, 1992
- Nanostructured Y2O3: Synthesis and relation to microstructure and propertiesScripta Metallurgica et Materialia, 1991
- Stability of Monoclinic and Orthorhombic Zirconia: Studies by High‐Pressure Phase Equilibria and CalorimetryJournal of the American Ceramic Society, 1991
- Sintering characteristics of nanocrystalline TiO2Journal of Materials Research, 1990
- The production of nanocrystalline powders by magnetron sputteringJournal of Applied Physics, 1990
- Nanocrystalline materials an approach to a novel solid structure with gas-like disorder?Physics Letters A, 1984
- Ultrafine metal particlesJournal of Applied Physics, 1976
- A Method of Producing Very Dense ZrO2Journal of the American Ceramic Society, 1961