Synthesis and Properties of Hydroxyapatite-Zirconia Composite Ceramics

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J. Korean Ceram. Soc. > Volume 30(9); 1993 > Article

Journal of the Korean Ceramic Society 1993;30(9): 754.

Hydroxyapatite-Zirconia 복합 Ceramcis의 제조 및 특성

송종택, 변승호, 류동우, 최상흘¹

단국대학교 재료공학과
¹한양대학교 무기재료공학과

Synthesis and Properties of Hydroxyapatite-Zirconia Composite Ceramics

ABSTRACT

Hydroxyapatite(HAp)-zirconia composite ceramics were prepared by simplified synthesis process and then their properties were investigated. Composite powders of HAp and zirconia were successively synthesized under Ca/P=1.69, 1.71, 1.73 and pH=11 by precipitation method. HAp-zirconia ceramics were obtained with sintering of these various HAp-zirconia composite powders. These sintered bodies were mainly composed of HAp and ZrO2(tetragonal), but it was found that a little of HAp was decomposed into TCP as the amount of zirconia and the sintering temperature were increased. When HAp having 10~15wt.% ZrO2 content were sintered in the range of 1150 to 130$0^{circ}C$, the apparent porosity was about 7~11%. This showed that the successive synthesis process employed here had a limit to obtian more densified composite ceramics.