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

Yoshio Sakka; Tatsunori Ishii; Tohru S. Suzuki; Koji Morita; Keijiro Hiraga

doi:10.1016/S0955-2219(03)00207-3

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

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

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

44 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.%Y₂O₃ doped ZrO₂) 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 language	English
Pages (from-to)	449-453
Number of pages	5
Journal	Journal of the European Ceramic Society
Volume	24
Issue number	2
DOIs	https://doi.org/10.1016/S0955-2219(03)00207-3
Publication status	Published - 2004 Feb
Externally published	Yes

Keywords

AlO
Colloidal processing
Grain growth
MnO
Superplasticity
ZrO

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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

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.%Y2O3 doped ZrO2) 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.",

keywords = "AlO, Colloidal processing, Grain growth, MnO, Superplasticity, ZrO",

author = "Yoshio Sakka and Tatsunori Ishii and Suzuki, {Tohru S.} and Koji Morita and Keijiro Hiraga",

year = "2004",

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T1 - Fabrication of high-strain rate superplastic yttria-doped zirconia polycrystals by adding manganese and aluminum oxides

AU - Sakka, Yoshio

AU - Ishii, Tatsunori

AU - Suzuki, Tohru S.

AU - Morita, Koji

AU - Hiraga, Keijiro

PY - 2004/2

Y1 - 2004/2

N2 - 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.%Y2O3 doped ZrO2) 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.

AB - 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.%Y2O3 doped ZrO2) 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.

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KW - Colloidal processing

KW - Grain growth

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KW - ZrO

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