A Synthesis and Characteristics for ZrO2-Y2O3 System Powders by Coprecipitation Method ; I. The Properties and Sinterabilities of ZrO2-8m/o Y2O3

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J. Korean Ceram. Soc. > Volume 26(2); 1989 > Article

Journal of the Korean Ceramic Society 1989;26(2): 242.

공침법에 의한 ZrO2-Y2O3계 분말합성 및 특성;I. ZrO2-8m/o Y2O3의 특성 및 소결성

방대규, 윤종석, 이희수

연세대학교 요업공학과

A Synthesis and Characteristics for ZrO2-Y2O3 System Powders by Coprecipitation Method ; I. The Properties and Sinterabilities of ZrO2-8m/o Y2O3

ABSTRACT

The powder properties and sinterability of ZrO2-8m/o Y2O3 prepared by coprecipitation were investigated. The specific surface area and the total pore volume were increased with increasing pH of sediment and using of ethyl alcohol for washing. The powders of prepared by freeze drying method were showed the smallest particle size and lowest agglomerate rate, and the powders obtained from spray drying method were showed porous structure. At 130$0^{circ}C$, their relative density were 94-96%, so these sintered bodies have revealed high sinterability in spite of low sintering temperature.