A Study on the Preparation and Properties of Hydroxyapatite Bioceramics

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

Journal of the Korean Ceramic Society 1989;26(2): 171.

Hydroxyapatite Bioceramics의 합성 및 물성에 관한 연구

이석곤, 고형열, 이구종¹, 최상흘

한양대학교 무기재료공학과
¹국립공업시험원 요업과

A Study on the Preparation and Properties of Hydroxyapatite Bioceramics

ABSTRACT

In order to develope hydroxyapatite ceramics which has mechanical strength as bio-implant materials and get the basic data for the study and application of biocompatibility, hydroxyapatite was synthesized at Ca/P=1.67~1.75, pH 7~11 by precipitation method. Using prepared powders, the sintered body, fluorine substituted body and the porous body was formed and their properties were investigated. The sample obtained in condition of Ca/P=1.67, pH 7 and sintering at 1,15$0^{circ}C$ was decomposed to $beta$-tricalcium phosphate, and co-existed with hydroxyapatite. Hydroxyapatite synthesized at pH 11 was not easily decomposed to $beta$-tricalcium phosphate at sintering process. The substitution of a small amount of fluorine for hydroxyapatite prevented hydroxyapatite from being decompsed to $beta$-tricalcium phosphate. Hydroxyapatite ceramics which substited of 10% fluorine was prepared at 1,15$0^{circ}C$, and the valueof bending strength for this body were found to be 112MPa.