本文主要对微孔型HAp基生物材料的制备工艺及成孔机制进行了初步研究。研究发现 ,经冷压成型、等静压成型后的坯体再用无压烧结可制得孔径不等的微孔型HAp ZrO2 复合材料。在成型压力、烧结温度及保温时间都相同的条件下 ,添加剂与纳米氧化锆含量越高复合材料的强度越低 ,但其最低弯曲强度也达到 2 3MPa,大大高于已报道的多孔型材料。添加剂及纳米ZrO2 的加入量是材料中孔径大小及孔隙率高低的关键因素 ,而成型方式、烧结温度及保温时间等因素对其也有影响。 In this paper, the preparation of porous HAp-based biomaterials and pore forming mechanism were primarily studied. The study found that after cold forming, isostatic pressing of the green body and then pressureless sintering porous micropores can be obtained HAp ZrO2 composite material. Under the condition of the same molding pressure, sintering temperature and holding time, the higher the content of additive and nano-zirconia, the lower the strength of the composites, but the lowest flexural strength reached 23MPa, much higher than the reported porous materials. Additives and nano-ZrO2 addition amount is the key factor in pore size and porosity of the material, and the forming method, sintering temperature and holding time and other factors also have an impact on it.