Novel calcium phosphate ceramics prepared by powder sintering and crystallization of glasses in the pyrophosphate region
- 1 December 1998
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 13 (12) , 3357-3360
- https://doi.org/10.1557/jmr.1998.0455
Abstract
Silica-free phosphate glasses containing small amounts of Na2O and TiO2 with the composition of Ca/P = 1 in atomic ratio were obtained. When powder compacts of the glasses were heated at 850 °C, they crystallized and subsequently sintered, resulting in glass-ceramics containing β–Ca3(PO4)2 and β–Ca2P2O7 crystalline phases. The glass-ceramics show a relatively high fracture toughness of KIC ≈ 2 MPa m0.5. By soaking in simulated body fluid at 37 °C, a calcium phosphate phase was formed newly on the surface of the glass-ceramics.Keywords
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