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J. Korean Ceram. Soc. > Volume 25(6); 1988 > Article
Journal of the Korean Ceramic Society 1988;25(6): 601.
이트리아 안정화 지르코니아 소결체의 특성에 SiO2첨가가 미치는 영향
김상희, 최시영, 조상희1
경북대학교 전자공학과
1경북대학교 재료공학과
Effect of SiO2 Addition on Sintering Characteristics in Ytrriastabilized Zirconia Ceramics
The effect of SiO2 addition on sintering characteristics of 8 mole percent yttria-stabilized zirconia ceramics is investigated. As the addition of SiO2 is increased, sinterbility, microstructure, and Vickers hardness of the zirconia ceramic increased but fracture toughness and electrical conductivity are decreased. It is considered that the electrical conductivity decrease with the increase of SiO2 is due to the decrease of defect concentration of ionized oxygen. From the complex impedance measurement, it is shown that the influence of SiO2 is more dominant at the resistivity of bulk region than of grain boundary region.
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