The effect of the nano- bioglass reinforcement on magnesium based composite
| Autor: | Alireza Valanezhad, Mohammad Javad Shirani, Ikuya Watanabe, Farahnaz Nejatidanesh, Omid Savabi, Mohammad Khodaei |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Ceramics
Materials science Time Factors Compressive Strength Composite number Biomedical Engineering Sintering chemistry.chemical_element Spark plasma sintering 02 engineering and technology Prosthesis Design Chemical reaction Nanocomposites Biomaterials Matrix (chemical analysis) 03 medical and health sciences 0302 clinical medicine X-Ray Diffraction Powder metallurgy Nano Materials Testing Pressure Magnesium Composite material Particle Size Calorimetry Differential Scanning 030206 dentistry Prostheses and Implants 021001 nanoscience & nanotechnology Kinetics chemistry Mechanics of Materials Metals Bone Substitutes Microscopy Electron Scanning Stress Mechanical Powders 0210 nano-technology Porosity |
| Zdroj: | Journal of the mechanical behavior of biomedical materials. 100 |
| ISSN: | 1878-0180 |
| Popis: | Nano-bioceramic particles serving as a reinforcement can improve the mechanical and biological properties of magnesium implants, but they might have some side effects, that must be addressed. In this research, magnesium composites including 10 wt% nano-bioglass (nBG) were fabricated using powder metallurgy (PM10) and spark plasma sintering (SPS10) methods for bone reconstruction purposes. The results of the compression test indicated that the SPS10 sample had higher mechanical properties, in comparison to the PM10 sample, and nBG had more reinforcing effect on the mechanical properties of magnesium matrix. X-ray difractometery indicated that nBG was chemically reacted with magnesium in the PM10 sample, and resulted in some extra phases (MgO and Mg2Si) formation, while there was no detectable extra phases in the SPS10 sample. However, a higher in vitro degradation rate was observed for PM10 sample, because of multi-phase formation at the magnesium matrix. To inhibit the chemical reaction between magnesium and nBG kinetically, a short time sintering process can be, therefore, recommended. |
| Databáze: | OpenAIRE |
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