Preparation of dense ZrO2/ZrW2O8 cosintered ceramics with controlled thermal expansion coefficients

Eiki Niwa; Shuhji Wakamiko; Takaaki Ichikawa; Shaorong Wang; Takuya Hashimoto; Kohji Takahashi; Yuko Morito

doi:10.2109/jcersj.112.271

Preparation of dense ZrO₂/ZrW₂O₈ cosintered ceramics with controlled thermal expansion coefficients

Eiki Niwa, Shuhji Wakamiko, Takaaki Ichikawa, Shaorong Wang, Takuya Hashimoto, Kohji Takahashi, Yuko Morito

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

10 Citations (Scopus)

Abstract

Various kinds of ZrO₂-ZrW₂O₈ composite ceramics were successfully prepared by cosintering of ZrO₂ and ZrW₂O₈ mixture with various ratios at 1200°C. The thermal expansion coefficient of the composite could be controlled from -9.6 × 10^-6K^-1-8.2 × 10^-6K^-1 by varying ZrO₂/ZrW₂O₈ ratios and zero thermal expansion was observed in the specimen with a ZrO₂/ZrW ₂O₈ weight ratio of 2/1. A small amount of Al ₂O₃ addition less than 0.25 mass% was effective in increasing the density of the composite. It was suggested that the generation of a liquid phase of Al₂ (WO₄)₃ improved the sintering property of the ZrO₂-ZrW₂O₈ mixture.

Original language	English
Pages (from-to)	271-275
Number of pages	5
Journal	Journal of the Ceramic Society of Japan
Volume	112
Issue number	1305
DOIs	https://doi.org/10.2109/jcersj.112.271
Publication status	Published - May 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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title = "Preparation of dense ZrO2/ZrW2O8 cosintered ceramics with controlled thermal expansion coefficients",

abstract = "Various kinds of ZrO2-ZrW2O8 composite ceramics were successfully prepared by cosintering of ZrO2 and ZrW2O8 mixture with various ratios at 1200°C. The thermal expansion coefficient of the composite could be controlled from -9.6 × 10-6K-1-8.2 × 10-6K-1 by varying ZrO2/ZrW2O8 ratios and zero thermal expansion was observed in the specimen with a ZrO2/ZrW 2O8 weight ratio of 2/1. A small amount of Al 2O3 addition less than 0.25 mass% was effective in increasing the density of the composite. It was suggested that the generation of a liquid phase of Al2 (WO4)3 improved the sintering property of the ZrO2-ZrW2O8 mixture.",

author = "Eiki Niwa and Shuhji Wakamiko and Takaaki Ichikawa and Shaorong Wang and Takuya Hashimoto and Kohji Takahashi and Yuko Morito",

year = "2004",

month = may,

doi = "10.2109/jcersj.112.271",

language = "English",

volume = "112",

pages = "271--275",

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

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

number = "1305",

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T1 - Preparation of dense ZrO2/ZrW2O8 cosintered ceramics with controlled thermal expansion coefficients

AU - Niwa, Eiki

AU - Wakamiko, Shuhji

AU - Ichikawa, Takaaki

AU - Wang, Shaorong

AU - Hashimoto, Takuya

AU - Takahashi, Kohji

AU - Morito, Yuko

PY - 2004/5

Y1 - 2004/5

N2 - Various kinds of ZrO2-ZrW2O8 composite ceramics were successfully prepared by cosintering of ZrO2 and ZrW2O8 mixture with various ratios at 1200°C. The thermal expansion coefficient of the composite could be controlled from -9.6 × 10-6K-1-8.2 × 10-6K-1 by varying ZrO2/ZrW2O8 ratios and zero thermal expansion was observed in the specimen with a ZrO2/ZrW 2O8 weight ratio of 2/1. A small amount of Al 2O3 addition less than 0.25 mass% was effective in increasing the density of the composite. It was suggested that the generation of a liquid phase of Al2 (WO4)3 improved the sintering property of the ZrO2-ZrW2O8 mixture.

AB - Various kinds of ZrO2-ZrW2O8 composite ceramics were successfully prepared by cosintering of ZrO2 and ZrW2O8 mixture with various ratios at 1200°C. The thermal expansion coefficient of the composite could be controlled from -9.6 × 10-6K-1-8.2 × 10-6K-1 by varying ZrO2/ZrW2O8 ratios and zero thermal expansion was observed in the specimen with a ZrO2/ZrW 2O8 weight ratio of 2/1. A small amount of Al 2O3 addition less than 0.25 mass% was effective in increasing the density of the composite. It was suggested that the generation of a liquid phase of Al2 (WO4)3 improved the sintering property of the ZrO2-ZrW2O8 mixture.

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Preparation of dense ZrO₂/ZrW₂O₈ cosintered ceramics with controlled thermal expansion coefficients

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