Superplasticity in geo2-doped TZP

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

Superplasticity in geo₂-doped TZP

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

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	543-548
Number of pages	6
Journal	Materials Science Forum
Volume	304-306
Publication status	Published - 1999 Jan 1
Externally published	Yes

Keywords

Ductility
Superplasticity
TZP

ASJC Scopus subject areas

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

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T1 - Superplasticity in geo2-doped TZP

AU - Mimurada, J.

AU - Kondo, T.

AU - Takigawa, Y.

AU - Ikuhara, Y.

AU - Sakuma, T.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - 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.

AB - 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.

KW - Ductility

KW - Superplasticity

KW - TZP

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