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J. Korean Ceram. Soc. > Volume 34(11); 1997 > Article
Journal of the Korean Ceramic Society 1997;34(11): 1113.
공침법으로 제조한 아트리아 안정화 지르코니아-알루미나 분말의 특성
동신대학교 세라믹공학과
Properties of Yttria Stabilized Zirconia-Alumina Powders Prepared by Coprecipitation Method
The 2, 4, 6 and 8mol% Y2O3 doped-ZrO2 powders (20 kinds) with the addedtion of Al2O3 upto 8wt% were prepared by coprecipitation method using the zirconium oxyacetate, yttrium chloride and aluminum nitrate as starting materials. The coprecipitated powders were characterized by XRD, TG-DTA, FT-IR and SEM. The sintering properties of zirconia-alumina composites prepared by 2YSZ and 8YSZ powders containing various Al2O3 contents were also investigated. With increasing the yttria stabilizer contents, the amount of exothermic heat for zirconia crystallization decreased. And it was confirmed that the crystallizing temperature of coprecipitated zirconia powders increased and the crystallization process occurred in a wide temperature range, as Al2O3 content increased in 8YSZ.
Key words: Zirconia-alumina powders, Coprecipitation, Zirconium oxyacetate, Yttrium chloride, Aluminum nitrate
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