摘要
通过控制合成的方法制备出一种新型结构的碳酸钙,进一步利用常压水热反应将其表面转化为羟基磷灰石.制得的球形碳酸钙为方解石聚晶结构,其表面因外突的众多方解石板状单元而显粗糙状,粒度在15～30μm范围内.常压、100℃温度下水热反应10h转化后的产物保留了原料的结构和物理性能,XRD分析表明产物为羟基磷灰石和β-磷酸三钙混合相.根据EDS表面成分分析的结果,其表面大致组成为Ca10[(PO4)5.6(CO3)0.7](OH)1.8.
A novel structure of calcium carbonate crystals was prepared by controlled crystallization methods from supersaturated CaCl_2 and(NH_4)_2CO_3 solutions,and the crystals were converted to hydroxyapatite by hydrothermal reaction.The experimental results showed that the calcium carbonate was calcite-style phase(calcite-style phase) which was a solid sphere about 25 μm with a ledged surface caused by the exposed rhombohedral calcite units. The spherical calcite polycrystalline was identified to be mixed phases of hydroxyapatite and β-Ca_3(PO_4)_2 after conversion under 100 ℃ for 10 hours. EDS analysis showed the composition of its surface after conversion reaction was carbonated substituted hydroxyapatite(Ca_~10 [(PO_4)_~5.6 (CO_3)_~0.7 ](OH)_~1.8 ) retained.
出处
《南昌大学学报（工科版）》
CAS
2005年第2期63-66,共4页
Journal of Nanchang University(Engineering & Technology)
关键词
方解石
聚晶
羟基磷灰石
球形
calcite
polycrystalline
hydroxyapatite
spherical
