论文部分内容阅读
利用微弧氧化技术在Ti合金表面制备了医用羟基磷灰石(HA)膜,研究了HA膜在模拟体液中的生物相容性,通过SEM观察了HA膜在模拟体液中浸泡不同时间的表面形貌,并利用EDS测试了HA膜浸泡前后的Ca、P原子分数。结果表明,HA膜在模拟体液中浸泡后,体液的pH变化不大,而经过溶解–重结晶,新生成的HA晶粒发育更完整,更利于膜层与骨的结合;HA膜的钙磷比在浸泡前为1.97,浸泡20d后下降为1.66,接近于人体骨骼标准。
The medical hydroxyapatite (HA) membrane was prepared on the surface of Ti alloy by micro-arc oxidation technology. The biocompatibility of HA membrane in simulated body fluid was studied. The surface of HA membrane immersed in simulated body fluid for different time was observed by SEM Morphology, and the use of EDS test HA membrane immersion before and after Ca, P atomic fraction. The results showed that the humoral pH did not change much when the HA membrane immersed in simulated body fluid, but after the solution-recrystallization, the newly formed HA grains developed more completely, which was more conducive to the combination of the membrane and the bone. The ratio was 1.97 before immersion, which dropped to 1.66 after soaking for 20 days, close to the standard of human skeleton.