Abstract
The purpose of this study was to apply the dynamic compaction process to calcium phosphate biomaterials. this new technique is currently used to compact metallic powders at room temperature but has not been previously applied to biomaterials. A detailed study of hydroxyapatite compacts was carried out to determine shock compaction parameters. Low static precompaction (3.1 MPa) resulted in slight peripheral cracks. A compaction degree of about 70% and macrohardness of 51 Hv were achieved for a striker velocity of about 50 m/s. FTIR spectroscopy and X-ray diffraction showed no differences in structure and composition after dynamic compaction. Two other infrequently used biomaterials were also tested: an unstable octacalcium phosphate and β-calcium metaphosphate fibres. Scanning electron microscopy showed that dynamic compaction preserved the initial fibre structure of the material. No major structural or chemical changes were noted after shock consolidation. Our results show that dynamic compaction could extend the range of bioceramics.
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Trecant, M., Daculsi, G. & Leroy, M. Dynamic compaction of calcium phosphate biomaterials. J Mater Sci: Mater Med 6, 545–551 (1995). https://doi.org/10.1007/BF00151037
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DOI: https://doi.org/10.1007/BF00151037