Zirconia-toughened alumina ceramics of helical spring shape with improved properties from extruded sol-derived pastes

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High strength (1270 MPa) and tough (>9 MPa m(1/2)) zirconia-toughened alumina (ZTA) ceramics with a helical spring shape were produced from sol-derived pastes comprising a mixture of boehmite (gamma-AlOOH) and nano-size zirconia powders using extrusion. It is shown that the mechanical response of the extruded ZTA ceramics can be controlled/altered by manipulating the microstructure. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.


Original languageEnglish
Pages (from-to)359-364
Number of pages6
JournalScripta Materialia
Issue number4
Publication statusPublished - 1 Feb 2003


  • microstructure, extrusion, toughness, ZTA