为探索制备不同形态半透明羟基磷灰石(T-HA)陶瓷的方法,采用微米级HA粉体为原料,甲壳素为粘结剂,用溶胶-凝胶法制备出球状和纤维状的陶瓷初坯,然后进行常压烧结得到纯HA陶瓷,最后经过热等静压烧结得到T-HA陶瓷.溶胶-凝胶法赋形简单,制备出的球状T-HA陶瓷的球形度良好,纤维状T-HA陶瓷的纵横比高,其致密度为99.1％,平均晶粒尺寸为2.2 μm.其中球状半透明HA陶瓷的抗压强度为10.2 MPa,高于常规烧结得到的球状致密和多子孔 HA陶瓷(分别为8.9和4.7 MPa).仿生矿化和细胞培养的结果显示半透明HA陶瓷具有良好的生物相容性.
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