Structural transformations of bioactive glass 45S5 with thermal treatments
| Autor: | Alexandre Govin, Rachid Zenati, Jérôme Chevalier, Laurent Gremillard, Leila Lefebvre, D. Bernache-Assolant, G. Thollet |
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| Přispěvatelé: | Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Polymers and Plastics Mineralogy 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention [SPI.MAT]Engineering Sciences [physics]/Materials Crystallization kinetics chemistry.chemical_compound Differential scanning calorimetry law Phase (matter) Thermal Crystallization Metals and Alloys 021001 nanoscience & nanotechnology Silicate 0104 chemical sciences Electronic Optical and Magnetic Materials Chemical engineering chemistry Bioactive glass X-ray crystallography Ceramics and Composites 0210 nano-technology |
| Zdroj: | Acta Materialia Acta Materialia, Elsevier, 2007, pp.3305-3313 |
| ISSN: | 1359-6454 |
| Popis: | International audience; We report on the structural transformations of Bioglass® during thermal treatments. Just after the glassy transition, at 550 °C, a glassy phase separation occurs at 580 °C, with the appearance of one silicate- and one phosphate-rich phase. It is followed by the crystallization of the major phase Na2CaSi2O6, from 610 to 700 °C and of the secondary phase, silico-rhenanite, at 800 °C. The latter evolves from the phosphate-rich glassy phase, which is still present after the first crystallization. In order to control the processing of glass-ceramic products from Bioglass®, crystallization kinetics were studied via differential scanning calorimetry measurements in the range of 620-700 °C and temperature-time-transformation curves were established. |
| Databáze: | OpenAIRE |
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