Hydroxyapatite Formation on Crystallized Bioactive Glass Coat on Alumina

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doi:2003.40.3.255

J. Korean Ceram. Soc. > Volume 40(3); 2003 > Article

Journal of the Korean Ceramic Society 2003;40(3): 255.
doi: https://doi.org/10.4191/kcers.2003.40.3.255

알루미나에 코팅된 생체활성유리의 결정화에 따른 수산화 아파타이트 형성

이은성, 지상수, 김철영

인하대학교 세라믹공학과

Hydroxyapatite Formation on Crystallized Bioactive Glass Coat on Alumina

ABSTRACT

Alumina glazed with a bioactive glass reacted in Simulated Body Fluids(SBF) to investigate the behavior of hydroxyapatite formation on the glass coat layer. Various crystalline phases were found depending on the firing temperatures when the bioactive glass coat was heat-treated. The glass coat was crystallized into ${beta}$-wollastonite and apatite when fired at 1100$^{circ}C$, and ${alpha}$-wollastonite and apatite when fired at 1200$^{circ}C$. Those samples reacted in SBF, and it is observed that hydroxyapatite developed on the surface of the crystallized glaze. Its formation was much easier in the sample with ${alpha}$-wollastonite than with ${beta}$-wollastonite. This is because that the ${alpha}$-wollastonite dissolves more easily than ${beta}$-wollastonite does in SBF.

Key words: Bioactive glass coat, Alumina, Hydroxyapatite, Simulated body fluids, Wollastonite