Preparation and characterization of Al2O3 reinforced hydroxyapatite
| Autor: | Huaxia Ji, Peter M. Marquis |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Materials science
Aluminate Composite number Biophysics Biomaterial Mineralogy Sintering Bioengineering Microstructure Biomaterials Microscopy Electron chemistry.chemical_compound X-Ray Diffraction chemistry Chemical engineering Mechanics of Materials Agglomerate Aluminum Oxide Ceramics and Composites Aluminium oxide Calcium aluminates Hydroxyapatites |
| Zdroj: | Biomaterials. 13:744-748 |
| ISSN: | 0142-9612 |
| DOI: | 10.1016/0142-9612(92)90011-c |
| Popis: | The microstructure of Al2O3 reinforced hydroxyapatite (HA-Ca5(PO4)3OH) was studied. It was demonstrated that in this composite the Al2O3 particles are uniformly distributed in a matrix of spherical HA agglomerates formed by primary needlelike HA particles present before making green compact. In the HA + 20 wt% Al2O3 system, hydroxyapatite is partially decomposed into alpha-Ca3(PO4)2 and CaO with H2O vapour during sintering. Subsequently, the CaO is combined with Al2O3 to produce calcium aluminates (CaAl2O4 and CaAl4O7). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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