SBF 对植入物用多孔钛构件循环压缩性能的影响

Munshi Muhammad Raihan¹, Afrina Khan Piya¹, Mohammad Alamgir Hossain²
1、长冈市长冈工业大学机械工程系
2、军事科学技术学院机械工程系

摘要

近年来，多孔结构因其优于块状材料的特性而受到植入物应用研究者的关注。本研究的目的是评估多孔钛部
件在模拟体液（SBF）中的循环压缩行为。以复型浸渍法制备的多孔钛构件为研究对象。空气中的压缩试验表明，多
孔体的屈服强度平均为 8MPa，弹性模量约为 180MPa，这与松质骨应用兼容。在 10%应变后，多孔结构塑性变形，
产生长平台区域。压缩疲劳试验表明，在较高应力水平下，多孔钛在 SBF 中比在空气中更早失效。相比之下，多孔基
材的疲劳极限为 2MPa，不受 SBF 介质的影响。在 SBF 中进行 1000 万次循环后，通过 SBF 的再沉淀，在多孔钛表面
部分形成磷酸钙层。EDS 分析表明，Ca/P 原子比为 1.44，接近β-TCP 和 HA 相，这些相有利于骨组织向内生长。

关键词

SBF；循环压缩性能；多孔钛；植入物应用；耐腐蚀性；EDS 分析；骨传导率和生物活性涂层

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