Fabrication of high-strain rate superplastic yttria-doped zirconia polycrystals by adding manganese and aluminum oxides

Yoshio Sakka, Tatsunori Ishii, Tohru Suzuki, Koji Morita, Keijiro Hiraga

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Conventional superplastic ceramics have been established at temperatures over 1400 °C with a slower deformation velocity of about 10 -4 (s -1 ). For the application of superplasticity to the manufacturing process, however, high-strain rate deformation velocity of around 10 -2 /s -1 is necessary. We have reported that alumina addition to 3YTZ (3 mol.%Y 2 O 3 doped ZrO 2 ) is effective in the enhanced ductility. The purpose of this study is to fabricate high-strain rate superplastic 3YTZ by adding manganese and aluminium oxides. Dense and fine-grained 3YTZ systems were obtained by slip casting and low temperature sintering. Manganese and alminium oxides added 3YTZ showed a maximum tensile ductility of about 600% at 1450 °C at a strain rate of 1.2×10 -2 s -1 .

Original languageEnglish
Pages (from-to)449-453
Number of pages5
JournalJournal of the European Ceramic Society
Volume24
Issue number2
DOIs
Publication statusPublished - 2004 Jan 1
Externally publishedYes

Fingerprint

Yttrium oxide
Aluminum Oxide
Polycrystals
Zirconia
Manganese
Strain rate
Aluminum
Fabrication
Oxides
Ductility
Superplasticity
Casting
Alumina
Sintering
Temperature
zirconium oxide
yttria
manganese oxide

Keywords

  • Al O
  • Colloidal processing
  • Grain growth
  • Mn O
  • Superplasticity
  • ZrO

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Fabrication of high-strain rate superplastic yttria-doped zirconia polycrystals by adding manganese and aluminum oxides. / Sakka, Yoshio; Ishii, Tatsunori; Suzuki, Tohru; Morita, Koji; Hiraga, Keijiro.

In: Journal of the European Ceramic Society, Vol. 24, No. 2, 01.01.2004, p. 449-453.

Research output: Contribution to journalArticle

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AU - Hiraga, Keijiro

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