Microstructure and mechanical properties of open cellular Ti–6Al–4V prototypes fabricated by electron beam melting for biomedical applications
Microstructure and mechanical properties of open cellular Ti–6Al–4V prototypes fabricated by electron beam melting for biomedical applications
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DOI：
10.1179/1753555715y.0000000056
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发表时间：
2016-01
影响因子：
3.1
通讯作者：
S. Zhao;Shumu Li;W. Hou;Y. Hao;Rui Yang;Lawrence E. Murr
中科院分区：
文献类型：
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作者：
S. Zhao;Shumu Li;W. Hou;Y. Hao;Rui Yang;Lawrence E. Murr
具有开放式多孔结构和泡沫的钛及钛合金具有与人体骨骼相匹配的低杨氏模量，并且能够为骨组织向内生长提供空间以达到更好的固定，被认为是替代商业致密种植体的良好选择。然而，目前开发的钛多孔合金的制造方法，例如粉末烧结，存在孔隙率低以及对孔隙尺寸、形状和分布控制不佳等缺点。最近，使用电子束熔化方法的增材制造已成功应用于制造钛多孔网和泡沫。与其他报道的方法相比，该技术具有精确控制内部孔隙结构和复杂细胞形状的优点。在本文中，作者简要回顾了电子束熔化技术制备的 Ti-6Al-4V 多孔结构的制备、杨氏模量、力学性能和生物相容性，以及未来的发展趋势。
Titanium and titanium alloys with open cellular structures and foams possess low Young's modulus matching to human bone and the capability to provide space for bone tissue ingrowth to reach a better fixation, which have been thought as a good choice for the replacement of commercial dense implants. However, currently developed fabrication methods of titanium cellular alloys, such as powder sintering, reveal shortcomings like the low porosity and poor control over the size, shape and distribution of the pores. Recently, additive manufacturing using the electron beam melting method has been applied successfully to fabricate titanium cellular meshes and foams. Compared to other reported methods, this technique has the advantages of accurate control of internal pore architectures and complex cell shapes. In the present paper, the authors briefly review the fabrication, Young's modulus, mechanical properties and biocompatibility of Ti–6Al–4V cellular structures fabricated by electron beam melting techniques, along with future development trends.