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


KAYA C. , Butler E.

SCRIPTA MATERIALIA, vol.48, no.4, pp.359-364, 2003 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 4
  • Publication Date: 2003
  • Doi Number: 10.1016/s1359-6462(02)00460-8
  • Journal Name: SCRIPTA MATERIALIA
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.359-364
  • Keywords: ZTA, extrusion, toughness, microstructure

Abstract

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.