Fabrication of solid state foams based on full stabilized zirconia ceramics facilitating the superplasticity with dispersoids

Yuri Hashida, Hidetaka Hayashi, Akira Kishimoto

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Model ceramic foams were fabricated by expanding once-sintered dense shells utilizing the superplastic deformation of 8 mol% yttria-stabilized zirconia (8YSZ) dispersed with silica, titania or alumina. Similar to the case without dispersoid, 8YSZ based ceramic foam could not be fabricated with any amount of alumina addition. By adding silica more than 20 mol%, ceramic mono-foam can successfully be fabricated. The porosity increased with the sintering time up to 24 h, then saturated at about 40%. The porosity also increased with the amount of silica addition. In the case of titania addition, porosity was smaller compared with the same amount of silica addition.

Original languageEnglish
Pages (from-to)740-743
Number of pages4
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume54
Issue number11
DOIs
Publication statusPublished - Nov 1 2007

Keywords

  • Ceramics
  • Grain size
  • Insulators
  • Superplasticity
  • Zirconia

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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