【摘要】 以β-磷酸三钙/硅酸钙(β-TCP/CS)纳米复合粉体为原料,制备了质量比为50∶50的β-TCP/CS复合生物陶瓷．研究表明,1150℃烧结5h得到的样品强度最好,其致密度＞96%,晶粒尺寸约120nm,强度达126MPa、同人体致密骨相当；复合陶瓷在模拟体液中浸泡1天表面就全部被类骨羟基磷灰石层覆盖住,28天的降解率达10．1%,具有良好的生物活性和降解性．研究结果显示β-TCP/CS复合生物陶瓷有望作为强度较好的可降解生物活性硬组织修复材料．更多还原

【Abstract】 Theβ-Ca3（PO₄）₂/CaSiO₃ （β-TCP/CS） composite bioceramics with weight ratio of 50:50 were fabricated by using theβ-TCP/CS nano-composite powders.Theβ-TCP/CS composite bioceramics with＞96% relative density and 120nm grain size were obtained after sintering at 1150℃for 5h.The bending strength of the samples reached about 126MPa,which was similar to those of the human cortical bone.After soaking in simulated body fluid for 1 day,the samples were completely covered wity hydroxyapatite layers.The degradability of the samples reached 10.1% within 28 days in vitro.The results suggest excellent in vitro bioactivity and degradability of theβ-TCP/CS composite bioceramics.Therefore,theseβ-TCP/CS composite bioceramics may be potential candidates as good mechanical strength,bioactive and degradable biomaterials for hard tissue repair applications.更多还原