Synthesis and Characterization of HydroxyapatiteWollastonite Composite Powders by SolGel Processing
| Autor: | Martín A. Encinas-Romero, Victor M. Castaño, Santos Jesús Castillo, Felipe F. Castillón-Barraza, Salvador Aguayo-Salinas |
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| Rok vydání: | 2008 |
| Předmět: |
Marketing
Triethyl phosphate Materials science Hydrochloric acid engineering.material Condensed Matter Physics Wollastonite chemistry.chemical_compound symbols.namesake Calcium carbonate chemistry Distilled water Chemical engineering Materials Chemistry Ceramics and Composites symbols engineering Composite material Thermal analysis Raman spectroscopy Sol-gel |
| Zdroj: | International Journal of Applied Ceramic Technology. 5:401-411 |
| ISSN: | 1744-7402 1546-542X |
| DOI: | 10.1111/j.1744-7402.2008.02212.x |
| Popis: | Composites of hydroxyapatite–wollastonite were synthesized by a sol–gel route using calcium acetate and triethyl phosphate as precursors of hydroxyapatite and high-purity natural wollastonite added in ratios of 20, 50, and 80 wt%. These composites were characterized by thermal analysis, X-ray diffraction, FT-IR and Raman spectroscopy, and scanning and transmission electron microscopic techniques. Formation of hydroxyapatite occurs at a relatively low temperature, about 420°C, accompanied by calcium carbonate; wollastonite remains unreacted. The composites were purified by heat treatment to a higher temperature and washed with hydrochloric acid and distilled water, to produce B-type carbonated hydroxyapatite–wollastonite composites as final products. |
| Databáze: | OpenAIRE |
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