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Additive Manufacturing of Multi-morphology Graded Titanium Scaffolds for Bone Implant Applications by Aihua Yu; Ce Zhang; Wei Xu; Yun Zhang; Shiwei Tian; Bowen Liu; Jiazhen Zhang; Anrui He; Bo Su; Xin Lu is a Engineering article available to read on EtoBox.

What is Additive Manufacturing of Multi-morphology Graded Titanium Scaffolds for Bone Implant Applications about?

Porous Titanium scaffolds have attracted widespread attention as bone implants for avoiding the stress shielding effect and promoting bone-in-growth. In this study, multi-morphology graded scaffolds hybridized by Primitive and Gyroid structures with porosity of 50, 60, and 70% were designed (denoted as PG50, PG60, and PG70, respectively) and fabricated by selective laser melting. The simulation results showed that the maximum von-Mises stress of hybridized scaffolds increased from 504.22 to 884.24 MPa with porosity. The permeability and average pore size of multi-morphology PG50, PG60, and PG70 were in the range of 3.58 × 10 -9 -5.50 × 10 -9 m 2 and 568.1-758.4 μm, respectively. The microstructure of multi-morphology graded scaffolds consisted of a fully martensitic α phase. Tested permeabilities of PG50 and PG60 were 3.27 × 10 -9 and 4.35 × 10 -9 m 2 , respectively, which were within the range of human bone (0.01-12.1 × 10 -9 m 2 ). Elastic modulus and compressive yield strength of PG50 and PG60 ranged within 5.93-9.86 and 180.06-257.08 MPa, respectively. Therein, the PG50 not only exhibited a similar elastic modulus compared to human cortical bone (10.1 GPa) but also had higher s

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Author

Aihua Yu; Ce Zhang; Wei Xu; Yun Zhang; Shiwei Tian; Bowen Liu; Jiazhen Zhang; Anrui He; Bo Su; Xin Lu

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)