Effect of sintering atmosphere on microstructure and mechanical properties of TiO2-added zirconia-toughened alumina (Part 1) - diffusion of Ti and sinterability -

Chii Shyang Hwang; Yu Jing Chang

doi:10.2109/jcersj.103.987

Effect of sintering atmosphere on microstructure and mechanical properties of TiO₂-added zirconia-toughened alumina (Part 1) - diffusion of Ti and sinterability -

Chii Shyang Hwang, Yu Jing Chang

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

1 Citation (Scopus)

Abstract

To improve mechanical properties of TiO₂-added zirconia-toughened alumina (ZTA), the microstructure and sinterability of ZTA composites fabricated from ZTA powders containing (Zr, Ti)O₂ and sintered in an atmosphere of N₂ + 5 %H₂ were investigated. In the sintered ZTA, the concentration of Ti in grains of Al₂O₃ or (Zr, Ti)O₂, was analyzed with EDS attached to an AEM apparatus. Experimental results indicated that some Ti ions diffused to the grain boundary and into Al₂O₃ grains, thereby enhancing the densification of ZTA powders sintered in N₂ + 5 %H₂, the grain growth is less than that of powders sintered in air. The solubility of TiO₂ in (Zr, Ti)O₂ in ZTA sintered in N₂ + 5 %H₂ was smaller than that of ZTA sintered in air, which diminished the tetragonal zirconia phase in the ZTA sintered body.

Original language	English
Pages (from-to)	987-991
Number of pages	5
Journal	Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume	103
Issue number	1202
DOIs	https://doi.org/10.2109/jcersj.103.987
Publication status	Published - 1995

All Science Journal Classification (ASJC) codes

Ceramics and Composites
General Chemistry
Condensed Matter Physics
Materials Chemistry

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title = "Effect of sintering atmosphere on microstructure and mechanical properties of TiO2-added zirconia-toughened alumina (Part 1) - diffusion of Ti and sinterability -",

abstract = "To improve mechanical properties of TiO2-added zirconia-toughened alumina (ZTA), the microstructure and sinterability of ZTA composites fabricated from ZTA powders containing (Zr, Ti)O2 and sintered in an atmosphere of N2 + 5 %H2 were investigated. In the sintered ZTA, the concentration of Ti in grains of Al2O3 or (Zr, Ti)O2, was analyzed with EDS attached to an AEM apparatus. Experimental results indicated that some Ti ions diffused to the grain boundary and into Al2O3 grains, thereby enhancing the densification of ZTA powders sintered in N2 + 5 %H2, the grain growth is less than that of powders sintered in air. The solubility of TiO2 in (Zr, Ti)O2 in ZTA sintered in N2 + 5 %H2 was smaller than that of ZTA sintered in air, which diminished the tetragonal zirconia phase in the ZTA sintered body.",

author = "Hwang, {Chii Shyang} and Chang, {Yu Jing}",

year = "1995",

doi = "10.2109/jcersj.103.987",

language = "English",

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pages = "987--991",

journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",

issn = "0914-5400",

publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",

number = "1202",

}

Effect of sintering atmosphere on microstructure and mechanical properties of TiO₂-added zirconia-toughened alumina (Part 1) - diffusion of Ti and sinterability -. / Hwang, Chii Shyang; Chang, Yu Jing.
In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 103, No. 1202, 1995, p. 987-991.

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

TY - JOUR

T1 - Effect of sintering atmosphere on microstructure and mechanical properties of TiO2-added zirconia-toughened alumina (Part 1) - diffusion of Ti and sinterability -

AU - Hwang, Chii Shyang

AU - Chang, Yu Jing

PY - 1995

Y1 - 1995

N2 - To improve mechanical properties of TiO2-added zirconia-toughened alumina (ZTA), the microstructure and sinterability of ZTA composites fabricated from ZTA powders containing (Zr, Ti)O2 and sintered in an atmosphere of N2 + 5 %H2 were investigated. In the sintered ZTA, the concentration of Ti in grains of Al2O3 or (Zr, Ti)O2, was analyzed with EDS attached to an AEM apparatus. Experimental results indicated that some Ti ions diffused to the grain boundary and into Al2O3 grains, thereby enhancing the densification of ZTA powders sintered in N2 + 5 %H2, the grain growth is less than that of powders sintered in air. The solubility of TiO2 in (Zr, Ti)O2 in ZTA sintered in N2 + 5 %H2 was smaller than that of ZTA sintered in air, which diminished the tetragonal zirconia phase in the ZTA sintered body.

AB - To improve mechanical properties of TiO2-added zirconia-toughened alumina (ZTA), the microstructure and sinterability of ZTA composites fabricated from ZTA powders containing (Zr, Ti)O2 and sintered in an atmosphere of N2 + 5 %H2 were investigated. In the sintered ZTA, the concentration of Ti in grains of Al2O3 or (Zr, Ti)O2, was analyzed with EDS attached to an AEM apparatus. Experimental results indicated that some Ti ions diffused to the grain boundary and into Al2O3 grains, thereby enhancing the densification of ZTA powders sintered in N2 + 5 %H2, the grain growth is less than that of powders sintered in air. The solubility of TiO2 in (Zr, Ti)O2 in ZTA sintered in N2 + 5 %H2 was smaller than that of ZTA sintered in air, which diminished the tetragonal zirconia phase in the ZTA sintered body.

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Effect of sintering atmosphere on microstructure and mechanical properties of TiO₂-added zirconia-toughened alumina (Part 1) - diffusion of Ti and sinterability -

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