Postsintering Hot Isostatic Pressing of Ceria‐Doped Tetragonal Zirconia/Alumina Composites in an Argon–Oxygen Gas Atmosphere

Tsugio Sato, Tadashi Endo, Masahiko Shimada

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

Ceria‐doped tetragonal zirconia (Ce‐TZP)/alumina (Al2O3) composites were fabricated by sintering at 1450° to 1600°C in air, followed by hot isostatic pressing (postsintering hot isostatic pressing) at 1450°C and 100 MPa in an 80 vol% Ar–20 vol% O2 gas atmosphere. Dispersion of Al2O3 particles into Ce‐TZP was useful in increasing the relative density and suppressing the grain growth of Ce‐TZP before hot isostatic pressing, but improvement of the fracture strength and fracture toughness was limited. Postsintering hot isostatic pressing was useful to densify Ce‐TZP/Al2O3 composites without grain growth and to improve the fracture strength and thermal shock resistance.

Original languageEnglish
Pages (from-to)761-764
Number of pages4
JournalJournal of the American Ceramic Society
Volume72
Issue number5
DOIs
Publication statusPublished - 1989 Jan 1

Keywords

  • alumina
  • ceria
  • composites
  • isostatic pressing
  • zirconia

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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