Physico‐chemical properties and ultrasonic characterization of calcium phosphate ceramics
| Autor: | Serge Derible, Mihai Valentin Predoi, Cristian Catalin Petre, Hugues Duflo, Daniela Predoi |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Thermogravimetric analysis
Materials science Acoustics and Ultrasonics chemistry.chemical_element Calcium Apatite Crystal Arts and Humanities (miscellaneous) chemistry Chemical engineering visual_art Differential thermal analysis Phase (matter) visual_art.visual_art_medium Fourier transform infrared spectroscopy Stoichiometry |
| Zdroj: | The Journal of the Acoustical Society of America. 123:3282-3282 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.2933646 |
| Popis: | Calcium phosphate compounds have been studied for biomedical applications due to their chemical and structural similarity to the mineral phase of bone and tooth. The composition, physical and chemical properties, crystal size and morphology of synthetic apatite are extremely sensitive to preparation conditions and sometimes it resulted into non‐ stoichiometric calcium deficient hydroxyapathite (Hap) powders. The present paper refers to calcinations of calcium phosphate ceramics at 800 and 1000oC. The effect of heat treatment were investigated by X‐ray diffraction (XRD), Fourier transform infrared (FTIR), differential thermal analysis (DTA) and thermal gravimetric analysis (TGA). FTIR spectra showed the presence of various PO43‐ and OH‐groups present in the powders. Powders compacted and sintered at 800 and 1000oC showed an increase in density. The main objective of the paper is a comparison of the results obtained by the previous methods to those obtained using the ultrasonic air‐coupling technique. Modul... |
| Databáze: | OpenAIRE |
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