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采用粉末冶金法制备了纳米羟基磷灰石(nHA)钛基生物医用复合材料,借助XRD、EDS、SEM、压缩弹性模量试验以及生物矿化过程和细胞活性分析,研究了10%的nHA对钛基生物医用材料结构及性能的影响。结果表明,钛基生物医用复合材料的主晶相仍为Ti,同时也有少量的Ti2O、Ti5P3和CaTiO3化合物,这些化合物分布于Ti晶粒的周围;添加nHA改变了钛生物材料的高温烧结性能,材料晶粒间孔隙明显增多;添加nHA后的钛基复合材料,压缩弹性模量仅为纯Ti试样的一半左右,接近人体皮质骨的压缩弹性模量;添加nHA后的钛基复合材料具有更好的生物活性。
The nano-hydroxyapatite (nHA) titanium-based biomedical composites were prepared by powder metallurgy. The XRD, EDS, SEM, compressive elastic modulus test, biomineralization process and cell activity analysis were used to study the effect of 10% Effect of Titanium Biomedical Materials on Structure and Properties. The results show that the main phase of Ti-based biomedical composites is still Ti, with a small amount of Ti2O, Ti5P3 and CaTiO3 compounds distributed around the Ti grains. Adding nHA changes the high-temperature sintering properties of titanium biomaterials, The intergranular porosity of the material increased obviously; the compressive elastic modulus of the titanium-based composite added with nHA was only about half that of the pure Ti, which was close to the compressive elastic modulus of the human cortical bone; the addition of nHA to the titanium-based composite possessed Better biological activity.