Abstract
ZrO2-Al2O3 powders were synthesized by spray pyrolysis. These powders were sintered at 1 GPa in the temperature range of 700Ç1100 ÉC. The microstructural evolution and densification are reported in this paper. The application of 1 GPa pressure lowers the crystallization temperature from ~850 to 700 ÉC. Similarly, the transformation temperature under 1 GPa pressure for <>g ê a Al2O3 reduces from ~1100 to 700Ç800 ÉC range, and that for t <>ê m ZrO2 reduces from ~1050 to 700Ç800 ÉC range. It was possible to ob-tain highly-dense nanocrystalline ZrO2-Al2O3 composite at temperatures as low as 700 ÉC. The effect of high pressure on nucleation and transformation of phases is discussed.
Recommended Citation
R. S. Mishra et al., "Preparation of a ZrO₂-Al₂O₃ Nanocomposite by High-Pressure Sintering of Spray-Pyrolyzed Powders," Journal of Materials Research, Materials Research Society, Mar 1999.
The definitive version is available at https://doi.org/10.1557/JMR.1999.0111
Department(s)
Materials Science and Engineering
Sponsor(s)
India. Department of Science and Technology
National Science Foundation (U.S.)
United States. Department of Energy
Keywords and Phrases
Aluminium Oxide; Spray-Pyrolyzed Powders; Zirconium Dioxide Baddeleyite
International Standard Serial Number (ISSN)
0884-2914
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 1999 Materials Research Society, All rights reserved.
Publication Date
01 Mar 1999
