在较低温度下对离心喷雾干燥所制备的羟基磷灰石微球进行煅烧，并利用X射线衍射仪、扫描电子显微镜、傅里叶红外光谱仪、比表面积分析仪以及激光粒度分析仪等分析手段，研究了煅烧对羟基磷灰石微球的相组成、微观结构以及比表面积、孔体积和粒度等性能的影响。结果表明，经400℃煅烧，微球比表面积、孔体积及其粒度均明显增大；随煅烧温度升高，比表面积和孔体积均略有降低。
Hydroxyapatite（HA） microspheres were fabricated by centrifugul atomizing spray-drying method. The effects of sintering on mierostructure and properties of the hydroxyapatite microspheres were studied. A set of specimens were prepared by sintering the HA mierospheres in a conventional furnace at temperatures ranged from 400 to 600℃. The phase components, microstructure, specific surface area, total pore volume and size distribution of the microspheres were characterized by X-ray diffraction（XRD） , scanning electron microscopy（SEM） , Fourier-transform infrared spectrometry （FTIR）, surface area analysis （SSA） and laser diffraction particle size analysis（LDPSA） , respectively. The result shows that the specific surface area, pore volume and particle size of the microspheres are significantly increased at 400℃ , and the specific surface area and pore volume of the microspheres decrease with the increasing of sintering temperature.
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