Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 29, Issue 1, Pages 59-66Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2008.05.047
Keywords
Al2O3-ZrO2; Al2O3-YAG; Nanocomposites; Powder solid-state reactions; Sintering
Categories
Funding
- European Commission
- Italian Ministry MIUR
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Doping of commercial alumina nanopowders by using aqueous solutions of metal salts was exploited to prepare alumina-based nanocomposites. The same procedure was applied to produce a composite made of immiscible phases, that is an alumina-zirconia material, by doping an alpha-alumina powder with a zirconium chloride solution, as well as to produce an alumina-YAG (yttrium aluminium garnet) system by doping alumina with a yttrium chloride solution and promoting YAG formation by solid-state reaction at high temperature. For this latter case, the difference in reactivity between two commercial powders, one made of transition alumina, the other of pure alpha-phase, was investigated in terms of phase evolution and purity. In all cases natural sintering was performed to develop dense bodies. (c) 2008 Elsevier Ltd. All rights reserved.
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