Print Email Facebook Twitter Near net-shape fabrication of hydroxyapatite glass composites Title Near net-shape fabrication of hydroxyapatite glass composites Author Zhu, Q. de With, G. Dortmans, L.J.M.G. Feenstra, F. TNO Industrie Publication year 2004 Abstract Near net-shape fabrication of hydroxyapatite (HA) glass composites has been attempted by infiltrating a glass into porous HA performs. Main efforts were put to develop glasses that are chemically compatible with HA at elevated temperatures. After extensive investigations in the phosphate and borosilicate systems, glasses of (50-55)SiO2-(20-25)B2O 3-(10-20)Li2O-(0-6)CaO (wt%) composition were successfully developed. The glass shows good chemical compatibility with HA at elevated temperatures. Dense HA/glass composites can be fabricated at 850-950°C by the melt infiltration process. Investigations demonstrated a good near net-shape capability of the process, where the linear shrinkage induced by the infiltration process is less than 0.1%. Preliminary mechanical tests showed that the fracture strength and toughness of the infiltrated HA/glass composite are comparable with dense HA. Subject Borosilicate glassComposite materialsFracture toughnessHigh temperature effectsInfiltrationShrinkageChemical compatibilityHydroxyapatite glass compositesLinear shrinkageNet-shape capabilityHydroxyapatitePhosphateSilicon dioxideChemical compositionMelting pointMolecular mechanicsMolecular stabilityStress strain relationshipBiocompatible MaterialsDurapatiteManufactured MaterialsMaterials TestingSurface PropertiesTensile Strength To reference this document use: http://resolver.tudelft.nl/uuid:d74afabc-57b3-4041-94e3-50910d6968f5 TNO identifier 238073 ISSN 0957-4530 Source Journal of Materials Science: Materials in Medicine, 15 (11), 1187-1191 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.