Mechanical optimization of the composite biomaterial based on the tricalcium phosphate, titania and magnesium fluoride
| Autor: | Ibticem Ayadi, Foued Ben Ayed |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Calcium Phosphates
Materials science Composite number Biomedical Engineering Sintering Magnesium Compounds Biocompatible Materials 02 engineering and technology 010402 general chemistry 01 natural sciences Biomaterials chemistry.chemical_compound Fluorides Flexural strength Materials Testing Composite material Magnesium fluoride Titanium Biomaterial 021001 nanoscience & nanotechnology Microstructure 0104 chemical sciences Grain growth chemistry Mechanics of Materials Vickers hardness test 0210 nano-technology |
| Zdroj: | Journal of the mechanical behavior of biomedical materials. 60 |
| ISSN: | 1878-0180 |
| Popis: | The microstructure, the densification and the mechanical properties of the tricalcium phosphate - titania - MgF2 composites were investigated. The effect of MgF2 addition on the performances of the tricalcium phosphate - 40wt% titania composites is discussed. The mechanical properties were investigated by Brazilian test, Vickers indentation and the ultrasound techniques. The mechanical properties of the tricalcium phosphate - 40wt% titania composites reached optimum performances after the sintering process at 1200°C for one hour with 4wt% MgF2. Thus, the highest values of the rupture strength, Vickers hardness, Young׳s and the shear modulus reached 27MPa, 360Hv, 51GPa and 20GPa, respectively. The increase of the mechanical properties of the composites is due to the presence of the liquid phase and the formation of a new compound. Thus, the microstructure of the composites reveals the presence of a new lamella form relative to the Mg2(PO4)F. Beyond 4wt% MgF2, the performances of the composites are hindered by the exaggerated grain growth and the formation of the bubbles. |
| Databáze: | OpenAIRE |
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