Mishra, RS and Jayaram, V and Majumdar, B and Lesher, CE and Mukherjee, AK (1999) Preparation of a ZrO2–Al2O3 nanocomposite by high-pressure sintering of spray-pyrolyzed powders. In: Journal of Materials Research, 14 (3). pp. 834-840.
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ZrO2–Al2O3 powders were synthesized by spray pyrolysis. These powders were sintered at 1 GPa in the temperature range of 700–1100 °C. The microstructural evolution and densification are reported in this paper. The application of 1 Gpa pressure lowers the crystallization temperature from ∼850 to <700 °C. Similarly, the transformation temperature under 1 GPa pressure for γ → α–Al2O3 reduces from ∼1100 to 700–800 °C range, and that for t → m ZrO2 reduces from ∼1050 to 700–800 °C range. It was possible to obtain highly dense nanocrystalline ZrO2–Al2O3 composite at temperatures as low as 700 °C. The effect of high pressure on nucleation and transformation of phases is discussed.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of Materials Research |
| Publisher: | Cambridge University Press |
| Additional Information: | Copyright of this article belongs to Cambridge University Press. |
| Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
| Date Deposited: | 25 Aug 2011 10:21 |
| Last Modified: | 25 Aug 2011 10:21 |
| URI: | http://eprints.iisc.ac.in/id/eprint/40318 |
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