Mixture of fuels approach for the solution combustion synthesis of Al{sub 2}O{sub 3}-ZrO{sub 2} nanocomposite
A modified solution combustion approach was used for the first time in the preparation of nanosize zirconia toughened alumina (ZTA) composite. ZTA-1 with an average particle size of {approx}37 nm was prepared using corresponding metal nitrates and urea. ZTA-2 with an average particle size of <10 nm was prepared by using mixture of fuels such as ammonium acetate, urea and glycine. The products formed were characterised by powder X-ray diffractometry, Transmission electron microscopy and BET surface area analysis. By using mixture of fuels, the energetics of the combustion reaction and eventually the properties of the combustion product have been changed. A series of combustion reactions were carried out to optimise the fuel ratio combinations required to obtain <10 nm ZTA particles. The microstructure of ZTA consisted of crystallites of Al{sub 2}O{sub 3} and ZrO{sub 2} both of which were nanocrystalline as evident from TEM.
- OSTI ID:
- 20888012
- Journal Information:
- Materials Research Bulletin, Vol. 39, Issue 2; Other Information: DOI: 10.1016/j.materresbull.2003.10.005; PII: S0025540803003040; Copyright (c) 2003 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
Synthesis of monodisperse spherical nanometer ZrO{sub 2} (Y{sub 2}O{sub 3}) powders via the coupling route of w/o emulsion with urea homogenous precipitation
Ripening of inter- and intragranular ZrO/sub 2/ particles in ZrO/sub 2/-toughened Al/sub 2/O/sub 3/