Effect of titania and magnesia addition to 3 mol% yttria doped tetragonal zirconia on some diffusion related phenomena

Y. Sakka; T. S. Suzuki; T. Matsumoto; K. Morita; K. Hiraga; Y. Moriyoshi

doi:10.1016/j.ssi.2004.02.058

Effect of titania and magnesia addition to 3 mol% yttria doped tetragonal zirconia on some diffusion related phenomena

Y. Sakka^*, T. S. Suzuki, T. Matsumoto, K. Morita, K. Hiraga, Y. Moriyoshi

^*Corresponding author for this work

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

8 Citations (Scopus)

Abstract

The 3 mol% yttria doped tetragonal zirconia (3YTZ) is known to show ionic conductivity and superplastic property. However, the application of superplasticity to the manufacturing process is limited because the strain rate is low. The purpose of this study is to fabricate high-strain rate superplastic zirconias by adding titania and magnesia to 3YTZ. Effect of titania and magnesia addition to 3YTZ on diffusion related phenomena such as sintering, grain growth, superplastic properties and ionic conductivity was investigated. Dense and fine-grained zirconia polycrystals were obtained by colloidal processing, where aqueous suspensions were prepared by dispersing 3YTZ, magnesia and titania powders by ultrasonication and adding the appropriate amount of polyelectrolyte. The grain growth was controlled by cation lattice diffusion and the grain growth rate was enhanced by adding titania and magnesia. The tensile ductility of about 216% was established for the titania and magnesia added 3YTZ at the low temperature of 1350°C and high strain rate of 1.2×10^-2 s^-1. The ionic conductivity of 3YTZ was decreased with titania addition.

Original language	English
Pages (from-to)	499-503
Number of pages	5
Journal	Solid State Ionics
Volume	172
Issue number	1-4 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.ssi.2004.02.058
Publication status	Published - 2004 Aug 31
Externally published	Yes

Keywords

Diffusion
Grain growth
Ionic conductivity
Superplasticity
Zirconia

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1016/j.ssi.2004.02.058

Cite this

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title = "Effect of titania and magnesia addition to 3 mol% yttria doped tetragonal zirconia on some diffusion related phenomena",

abstract = "The 3 mol% yttria doped tetragonal zirconia (3YTZ) is known to show ionic conductivity and superplastic property. However, the application of superplasticity to the manufacturing process is limited because the strain rate is low. The purpose of this study is to fabricate high-strain rate superplastic zirconias by adding titania and magnesia to 3YTZ. Effect of titania and magnesia addition to 3YTZ on diffusion related phenomena such as sintering, grain growth, superplastic properties and ionic conductivity was investigated. Dense and fine-grained zirconia polycrystals were obtained by colloidal processing, where aqueous suspensions were prepared by dispersing 3YTZ, magnesia and titania powders by ultrasonication and adding the appropriate amount of polyelectrolyte. The grain growth was controlled by cation lattice diffusion and the grain growth rate was enhanced by adding titania and magnesia. The tensile ductility of about 216% was established for the titania and magnesia added 3YTZ at the low temperature of 1350°C and high strain rate of 1.2×10-2 s-1. The ionic conductivity of 3YTZ was decreased with titania addition.",

keywords = "Diffusion, Grain growth, Ionic conductivity, Superplasticity, Zirconia",

author = "Y. Sakka and Suzuki, {T. S.} and T. Matsumoto and K. Morita and K. Hiraga and Y. Moriyoshi",

note = "Funding Information: This study was supported in part by the Budget for Nuclear Research of the Ministry of Education, Culture, Sports, Science and Technology.",

year = "2004",

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doi = "10.1016/j.ssi.2004.02.058",

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T1 - Effect of titania and magnesia addition to 3 mol% yttria doped tetragonal zirconia on some diffusion related phenomena

AU - Sakka, Y.

AU - Suzuki, T. S.

AU - Matsumoto, T.

AU - Morita, K.

AU - Hiraga, K.

AU - Moriyoshi, Y.

N1 - Funding Information: This study was supported in part by the Budget for Nuclear Research of the Ministry of Education, Culture, Sports, Science and Technology.

PY - 2004/8/31

Y1 - 2004/8/31

N2 - The 3 mol% yttria doped tetragonal zirconia (3YTZ) is known to show ionic conductivity and superplastic property. However, the application of superplasticity to the manufacturing process is limited because the strain rate is low. The purpose of this study is to fabricate high-strain rate superplastic zirconias by adding titania and magnesia to 3YTZ. Effect of titania and magnesia addition to 3YTZ on diffusion related phenomena such as sintering, grain growth, superplastic properties and ionic conductivity was investigated. Dense and fine-grained zirconia polycrystals were obtained by colloidal processing, where aqueous suspensions were prepared by dispersing 3YTZ, magnesia and titania powders by ultrasonication and adding the appropriate amount of polyelectrolyte. The grain growth was controlled by cation lattice diffusion and the grain growth rate was enhanced by adding titania and magnesia. The tensile ductility of about 216% was established for the titania and magnesia added 3YTZ at the low temperature of 1350°C and high strain rate of 1.2×10-2 s-1. The ionic conductivity of 3YTZ was decreased with titania addition.

AB - The 3 mol% yttria doped tetragonal zirconia (3YTZ) is known to show ionic conductivity and superplastic property. However, the application of superplasticity to the manufacturing process is limited because the strain rate is low. The purpose of this study is to fabricate high-strain rate superplastic zirconias by adding titania and magnesia to 3YTZ. Effect of titania and magnesia addition to 3YTZ on diffusion related phenomena such as sintering, grain growth, superplastic properties and ionic conductivity was investigated. Dense and fine-grained zirconia polycrystals were obtained by colloidal processing, where aqueous suspensions were prepared by dispersing 3YTZ, magnesia and titania powders by ultrasonication and adding the appropriate amount of polyelectrolyte. The grain growth was controlled by cation lattice diffusion and the grain growth rate was enhanced by adding titania and magnesia. The tensile ductility of about 216% was established for the titania and magnesia added 3YTZ at the low temperature of 1350°C and high strain rate of 1.2×10-2 s-1. The ionic conductivity of 3YTZ was decreased with titania addition.

KW - Diffusion

KW - Grain growth

KW - Ionic conductivity

KW - Superplasticity

KW - Zirconia

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ER -

Effect of titania and magnesia addition to 3 mol% yttria doped tetragonal zirconia on some diffusion related phenomena

Abstract

Keywords

ASJC Scopus subject areas

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