Title: Synthesis and characterisation of CeO2-coated ZrO2 powder-based TZP
Authors: Yuan, Zheng Xi ×
Vleugels, Jef
Van der Biest, Omer #
Issue Date: Dec-2000
Publisher: North-Holland
Series Title: Materials Letters vol:46 issue:5 pages:249-254
Abstract: A novel technique is described for the preparation of Al2O3-doped CeO2-coated ZrO2 nanopowders from a solution of :aluminium nitrate and cerium nitrate in a mixed alcohol/water suspension with monoclinic zirconia (m-ZrO2) powder. Drying of the suspension and subsequent calcination of the powder at 800 degreesC results in alumina-doped CeO2-coated m-ZrO2 nanopowder with a grain size below 100 nm. The as-prepared powder can be pressureless sintered in air at 1450 degrees into dense ceria-stabilised tetragonal polycrystals (Ce-TZP) materials with an excellent fracture toughness of 11 MPa m(1/2) and a Vickers hardness of 750 kg/mm(2) (HV30). The microstructure and mechanical properties of the alumina-doped CeO2-coated powder-based TZP are compared with that of a Ce-TZP obtained from commercially available co-precipitated powder. (C) 2000 Elsevier Science B.V. All rights reserved.
ISSN: 0167-577X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
× corresponding author
# (joint) last author

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