[A preliminary study on the mechanical characteristics of the titanium scaffolds with three-dimensional mesh structure fabricated by electron beam melting].
Objective:To examine the biomechanical properties of three-dimensional(3D) printed electron beam melting(EBM) Ti-6Al-4V mesh as scaffold for mandibular repairment.Methods:We fabricated Ti-6Al-4V samples of different structures with strut, sheet and 3D mesh scaffolds(a controllable diameter 0.35, 0.50, 0.70 mm, distribution density: intensive sparse) by EBM process. The mechanical properties of these structures were examined by X-ray energy dispersive spectrum(EDS), uniaxial tensile test, three-point bending test, under compression load and compared with their different microstructure and mechanical properties.Results:Compressive deformation behavior of these cellular structures exhibited brittle character that had a typical irregular plateau region in the stress-strain curves. The mesh of larger diameter(d=0.70 mm) showed higher specific strength than the meshs of small diameter(d=0.35 mm) did, and the other 3D mesh under the same condition showed identical specific stiffness.Conclusions:EBM was successfully used to fabricate novel 3D mesh Ti-6Al-4V structures for applications. By optimizing the buckling and bending deformation, Ti-6Al-4V cellular solids with high strength, low modulus. Furthermore, the results of mechanical property and chemistry composition showed that the scaffold could completely satisfy the requirement of hard tissue repairment.
Department of Oral and Maxillofacial Surgery, General Hospital of Chinese PLA, Beijing 100853, China [Present address: Department of Stomatology, Hospital of Jiangxi Provincial Armed Police Corps, Nanchang 330001, China].
R Z
RZ
Yan
Department of Stomatology, Chinese PLA 532 Hospital, Huangshan Anhui 245041, China.
Y F
YF
Li
Department of Oral and Maxillofacial Surgery, General Hospital of Chinese PLA, Beijing 100853, China [Present address: Department of Stomatology, Hospital of Jiangxi Provincial Armed Police Corps, Nanchang 330001, China].
C
C
Wang
Department of Oral and Maxillofacial Surgery, General Hospital of Chinese PLA, Beijing 100853, China [Present address: Department of Stomatology, Hospital of Jiangxi Provincial Armed Police Corps, Nanchang 330001, China].
R X
RX
Li
School of Energy and Power Engineering, Beihang University, Beijing 100191, China.
Z W
ZW
Liu
Department of Oral and Maxillofacial Surgery, General Hospital of Chinese PLA, Beijing 100853, China [Present address: Department of Stomatology, Hospital of Jiangxi Provincial Armed Police Corps, Nanchang 330001, China].
M
M
Hu
D004583:Electrons; D006244:Hardness; D008422:Materials Testing; D019736:Prostheses and Implants; D014025:Titanium
D014025:Titanium