| Title | Fracture toughness of hydroxyapatite reinforced with P 2O
5-CaO glasses containing Na
2O, K
2O and MgO
|
| Publication Type | Conference Paper |
| Year of Publication | 1996 |
| Authors | Silva, PL, Santos, JD, Knowles, JC, Silva, RF, Monteiro, FJ |
| Editor | Anon, |
| Conference Name | Transactions of the Annual Meeting of the Society for Biomaterials in conjunction with the International Biomaterials SymposiumTrans Annu Meet Soc Biomater Int Biomater Symp |
| Date Published | 1996/// |
| Publisher | Soc for Biomaterials |
| Conference Location | Toronto, Can |
| Keywords | Biomaterials, Bone, Composition effects, Fracture toughness, glass, Grain growth, hardness, Hydroxyapatites, Lime, Magnesia, Phosphate minerals, Potassium compounds, Sodium compounds, Thermal effects |
| Abstract | Calcium phosphate materials are widely used in biomedical applications but their poor strength and brittleness limit their use in load bearing applications. To improve their mechanical properties, hydroxyapatite (HA) ceramics were reinforced with P 2O
5-CaO based glasses with additions of Na
2+, Mg
2+ and K
+ oxides. A composite chemical composition that approaches the inorganic part of bone chemical composition was obtained using HA with calcium phosphate-based glasses. Fracture toughness was significantly enhanced by glass additions, and the decrease in fracture toughness at 1300 and 1350 °C was attributed to grain growth since it significantly increased with sintering temperature.
|
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-0030409631&partnerID=40&md5=d9b6e11fdb55db7fe76d61b3cb90b928 |
