可控制β-磷酸三钙生物陶瓷的大孔/微孔结构的制备工艺研究

Study on Process of Preparing Controllable Macropore/Micropore Structure βtricalcium Phosphate Bioceramics

采用了三种湿法工艺制备Ｃａ／Ｐ比为１．５０的磷酸三钙（ＴＣＰ）原料粉末。ＴＣＰ原料粉末经过不同方法成型烧结制得β－ＴＣＰ致密和多孔陶瓷材料；用扫描电镜观测了这些材料的孔隙结构，并测定了孔隙率、抗压强度和其在生理盐水中溶解性能等。研究表明了多孔β－ＴＣＰ陶瓷材料孔隙结构与抗压强度和溶解性能存在一定关系。提出了可控制大孔／微孔结构的多孔β－ＴＣＰ陶瓷的制备新方法。

In the present paper, three wetmethods were used to prepare tricalcium phosphate (TCP) raw powder having Ca/ P ratio 1.50. The TCP raw material powders were modeled and sintered to compact and porous βTCP bioceramics. The porous structure morphology was observed by SEM. The porosity, compressive strength, dissolubility in physiological saline of the bioceramics were also measured.It is showed that there is a certain relationsphip between porous structure and properties including porosity, compressive strength and dissolubility. A new process preparing controllable macropore/ micropore structure porous βTCP bioceramics resulting in controllable dissolubility of the bioceramics has been developed.