Superplasticity in geo2-doped TZP

J. Mimurada, T. Kondo, Y. Takigawa, Y. Ikuhara, T. Sakuma

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The effect of GeO2 addition on the superplasticity flow and tensile ductility in TZP was examined. ZrO2-2.5mol%Y2O3-1.0mol% GeO2 (TZP-lGe) exliibits lower flow stress and larger tensile elongation than ZrO2-2.5mol%Y2O3 (2.5Y-TZP) in a temperature range of 1200 and 155CTC. This reduction in flow stress is mainly caused by a reduction in activation energy ibr plastic flow. Cation's difiusivity must be enhanced by the presence of GeO2 in TZP. The enhanced ductility in TZP-lGe can be explained by the reduction in flow stress.

Original languageEnglish
Pages (from-to)543-548
Number of pages6
JournalMaterials Science Forum
Volume304-306
Publication statusPublished - 1999 Jan 1
Externally publishedYes

Keywords

  • Ductility
  • Superplasticity
  • TZP

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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