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J. Korean Ceram. Soc. > Volume 41(4); 2004 > Article
Journal of the Korean Ceramic Society 2004;41(4): 289.
doi: https://doi.org/10.4191/kcers.2004.41.4.289
합성 수산화아파타이트의 미세구조 발달
Microstructural Development in Synthetic Hydroxyapatite
Jong-Hee Kim, Young-Min Park1, Tae-Young Yang1, Seog-Young Yoon1, Hong-Chae Park
School of Materials Science and Engineering, Pusan National University
1School of Materials Science and Engineering, Pusan National Universit
Whisker and short rod shaped hydroxyapatite (Ca$_{10}$(PO$_4$)$_{6}$(OH)$_2$ with stoichiometric composition (Ca/P=1.62 -1.67, molar ratio) has been synthesized by hydrolysis and hydrothermal reaction of aqueous $alpha$-Ca$_3$(PO$_4$)$_2$($alpha$-TCP) solution (pH 11), respectively. The shape of resultant HAp was mainly dependent on synthetic route and the microstructural development was on processing condition. In hydrolysis processing, the degree of intersection of whiskerlike particles and agglomeration in the apsis line increased with increasing reaction time. In hydrothermal synthesis, the reaction product obtained under excessive reaction time ($geq$3 h at 20$0^{circ}C$) was severely agglomerated without further grain growth above certain critical size (0.75 ${mu}{textrm}{m}$ in length, 0.3${mu}{textrm}{m}$ 11m in diameter).
Key words: Whisker and short rod shaped hydroxyapatite, Hydrolysis, Hydrothermal reaction, $\alpha$-$Ca_3$($PO_4$)$_2$
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