Fracture toughness of hydroxyapatite reinforced with P2O5-CaO glasses containing Na2O, K2O and MgO

• Type: Article in International Conference Proceedings Book
• Date: 1996

Authors

Silva, PL (Author) Other; Santos, JD (Author) FEUP; Knowles, JC (Author) Other; Silva, RF (Author) Other; Monteiro, FJ (Author) FEUP

Conference proceedings International

Title: Transactions of the Annual Meeting of the Society for Biomaterials in conjunction with the International Biomaterials Symposium

Final page: 58

Proceedings of the 1996 5th World Biomaterials Congress. Part 2 (of 2)

Toronto, Can, 29 May 1996 through 2 June 1996

Indexing

ISI Web of Knowledge

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Other information

Authenticus ID: P-007-767

Abstract (EN): 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 P2O5-CaO based glasses with additions of Na2+, Mg2+ 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.

Language: English

Type (Professor's evaluation): Scientific