Effects of Sintering Temperature on the Porosity and Mechanical Behavior of Porous Titanium Scaffolds Prepared by Freeze-Casting
| Autor: | Guan-Lin Liu, Chang Joe-Ming, Hsiao-Ming Tung |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Sintering chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Compressive strength chemistry Mechanics of Materials 0103 physical sciences Freeze-casting General Materials Science Composite material 0210 nano-technology Porosity Elastic modulus Porous titanium Titanium |
| Zdroj: | Journal of Materials Engineering and Performance. 28:5494-5500 |
| ISSN: | 1544-1024 1059-9495 |
| DOI: | 10.1007/s11665-019-04291-w |
| Popis: | The purpose of this study was to investigate the effects of sintering temperature on the microstructure, and associated mechanical properties of porous titanium scaffolds prepared by freeze-casting. Sintering temperature significantly influenced the porosity and the mechanical properties of the titanium scaffolds. The porosity decreased from 60 to 20% as the sintering temperatures increased from 800 to 1100 °C. The scaffolds were of an open pore structure with pore sizes ranging from 2 to 20 μm. The average wall thickness of the porous titanium was measured, using a micro-computed tomography, to be in the range from 9.2 to 26.2 μm. Elastic modulus was between 2 to 7 GPa, depending on vacuum annealing conditions. The compression strength of the scaffolds may exceed 1000 MPa as the sintering temperature higher than 1000 °C. The increase in titanium strength and stuffiness could be mainly attributed to the decrease in porosity as well as the increase in wall thickness. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink