Preparation and sinterability of zirconia-toughened-alumina composite powder

Chii Shyang Hwang; Wen Haun Lin

doi:10.2109/jcersj.99.271

Preparation and sinterability of zirconia-toughened-alumina composite powder

Chii Shyang Hwang
, Wen Haun Lin

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

5 Citations (Scopus)

Abstract

To improve the properties of zirconia-toughened-alumina (ZTA) ceramics, a technique which involves hydrolysis of Zr(OC₃H₇)₄ in an Al₂O₃ slurry to form an Al₂O₃ powder with uniformly distributed ZrO₂ is described. The addition of TiO₂ within its solubility limit enhanced sinterability of the powder. A relative density of 98% can be obtained by firing at 1500°C for 2 h. The presence of TiO₂ promotes the grain growth of Al₂O₃ and ZrO₂, and contributes to the retention of tetragonal ZrO₂ in the sintered body.

Original language	English
Pages (from-to)	271-275
Number of pages	5
Journal	Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume	99
Issue number	1148
DOIs	https://doi.org/10.2109/jcersj.99.271
Publication status	Published - 1991

All Science Journal Classification (ASJC) codes

Ceramics and Composites
General Chemistry
Condensed Matter Physics
Materials Chemistry

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title = "Preparation and sinterability of zirconia-toughened-alumina composite powder",

abstract = "To improve the properties of zirconia-toughened-alumina (ZTA) ceramics, a technique which involves hydrolysis of Zr(OC3H7)4 in an Al2O3 slurry to form an Al2O3 powder with uniformly distributed ZrO2 is described. The addition of TiO2 within its solubility limit enhanced sinterability of the powder. A relative density of 98\% can be obtained by firing at 1500°C for 2 h. The presence of TiO2 promotes the grain growth of Al2O3 and ZrO2, and contributes to the retention of tetragonal ZrO2 in the sintered body.",

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AU - Hwang, Chii Shyang

AU - Lin, Wen Haun

PY - 1991

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N2 - To improve the properties of zirconia-toughened-alumina (ZTA) ceramics, a technique which involves hydrolysis of Zr(OC3H7)4 in an Al2O3 slurry to form an Al2O3 powder with uniformly distributed ZrO2 is described. The addition of TiO2 within its solubility limit enhanced sinterability of the powder. A relative density of 98% can be obtained by firing at 1500°C for 2 h. The presence of TiO2 promotes the grain growth of Al2O3 and ZrO2, and contributes to the retention of tetragonal ZrO2 in the sintered body.

AB - To improve the properties of zirconia-toughened-alumina (ZTA) ceramics, a technique which involves hydrolysis of Zr(OC3H7)4 in an Al2O3 slurry to form an Al2O3 powder with uniformly distributed ZrO2 is described. The addition of TiO2 within its solubility limit enhanced sinterability of the powder. A relative density of 98% can be obtained by firing at 1500°C for 2 h. The presence of TiO2 promotes the grain growth of Al2O3 and ZrO2, and contributes to the retention of tetragonal ZrO2 in the sintered body.

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EP - 275

JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

IS - 1148

ER -

Preparation and sinterability of zirconia-toughened-alumina composite powder

Abstract

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