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- Title
Dielectrical and structural characterization of iron oxide added to hydroxyapatite.
- Authors
Silva, C. C.; Filho, F. P.; Graça, M. F. P.; Valente, M. A.; Sombra, A. S. B.
- Abstract
In this work we report preparation, structural and dielectric analyses of iron oxide added in hydroxyapatite bioceramic (Ca10(PO4)6(OH)2 - HAP). Hydroxyapatite is the main mineral constituent of teeth and bones with excellent biocompatibility with hard and muscle tissues. The samples were prepared through a calcination procedure associated with dry high-energy ball milling process with different iron concentrations (1, 2·5 and 5 wt%). The dielectric analyses were made measuring the sample impedance in the frequency range 1 kHz-10 MHz, at room temperature. The relative permittivity of the ceramics, at 10 MHz, are between 7·13 ± 0·07 (1 wt%) and 6·20 ± 0·11 (5 wt%) while e" are between 0·0795 ± 0·008 (1 wt%) and 0·067 ± 0·012 (5 wt%). These characteristics were related to the sample microstructures studied by X-ray diffraction and SEM.
- Subjects
DIELECTRICS research; IRON oxides; X-ray diffraction; HYDROXYAPATITE; BIOCOMPATIBILITY
- Publication
Bulletin of Materials Science, 2008, Vol 31, Issue 4, p635
- ISSN
0250-4707
- Publication type
Article
- DOI
10.1007/s12034-008-0101-6