Additively manufactured heterogeneously porous metallic bone with biostructural functions and bone-like mechanical properties

• 作者: Pan Wang Xinwei Li Shumin Luo Mui Ling Sharon Nai Jun Ding Jun Wei
• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2021,（3）
• 页码范围: 173-179
• 页数: 7页
• 语种: 英文

摘要

A compatible artificial bone implant requires large pores for enhanced nutrients transports,small pores to allow cell seeding and bone-like mechanical properties to avoid stress shielding.Herein,we report novel improved gyroid lattices with millimetre-scaled gyroid wall spacings and micrometre-scaled additional pores on the walls.Designs are successfully fabricated by electron beam melting using Ti-6Al-4V to high part qualities while exhibiting bone-like mechanical properties with a range of Young's modulus of 8-15 GPa and strength of 150-250 MPa.The improved design also eliminates brittle failure by allowing the structure to deform more stably.