Fabrication of multiple-layered gradient cellular metal scaffold via electron beam melting for segmental bone reconstruction
| Autor: | Andrei Koptioug, Svetlana Nikolaevna Gorodzha, E. Chudinova, Lars-Erik Rännar, Mikhail S. Tkachev, Roman A. Surmenev, Maria A. Surmeneva |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Scaffold
Fabrication Materials science Quantitative Biology::Tissues and Organs Alloy 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Quantitative Biology::Subcellular Processes Metal Condensed Matter::Materials Science lcsh:TA401-492 General Materials Science Composite material Arch Quantitative Biology::Molecular Networks Mechanical Engineering technology industry and agriculture equipment and supplies 021001 nanoscience & nanotechnology 0104 chemical sciences Mechanics of Materials visual_art engineering Cathode ray visual_art.visual_art_medium lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology |
| Zdroj: | Materials & Design, Vol 133, Iss, Pp 195-204 (2017) |
| ISSN: | 0264-1275 |
| Popis: | The triple- and double-layered mesh Ti-based alloy scaffolds were successfully fabricated using electron beam melting (EBM). In this study Ti-based alloy cylindrical scaffolds with different 3D architectures intended for the segmental bone defect treatment were systematically compared. All lattice-like scaffolds were additively manufactured using EBM technology from Ti6Al4V to mimic the structures of human trabecular bone. Cylindrically-shaped lattice scaffolds (outer diameter of 15 mm and length of 35 mm) of five different types were designed and manufactured. Four types were tubular with inner hole diameter of 5 mm and two lattice layers of different density. Fifth type was cylindrical with three lattice layers of different density. In all samples outer lattice layer was most dense, and inner layers- least dense. Mechanical properties of scaffolds were determined by conducting uniaxial compression testing. The strain-stress curves for all samples with gradient porosities showed considerable ductility. Keywords: Additive manufacturing, Electron beam melting, Titanium alloy Ti6Al4V, Compression testing, Scaffold |
| Databáze: | OpenAIRE |
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