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dc.contributor.authorŞimşek, Deniz
dc.contributor.authorÇiftçioğlu, Rukiye
dc.contributor.authorHarsa, Şebnem
dc.contributor.authorÇiftçioğlu, Muhsin
dc.date.accessioned2021-02-12T18:41:16Z
dc.date.available2021-02-12T18:41:16Z
dc.date.issued2004
dc.identifier.issn1013-9826
dc.identifier.urihttps://hdl.handle.net/11147/9723
dc.descriptionProceedings of the 8th Conference and Exhibition of the European Ceramic Societyen_US
dc.description.abstractThe preparation of calcium phosphate based powders through chemical precipitation in order to determine the optimum conditions for the preparation of stoichiometric, thermally stable hydroxyapatite (HA) powders was investigated in this work. The effects of parameters like pH, aging time, and heat treatment temperature on the phase structure and morphology of the powders were investigated by SEM and XRD.HA was prepared at a Ca/P ratio of 1.67. The precipitation pH had a profound influence on the morphology and crystallite size of the powders in the 4-11 pH range. Relatively large 5?m prismatic particles were obtained at low pH whereas the powders were formed from agglomerates of nano sized particles at high pH. Powders had a HA dominant phase structure above a pH of 8. Phase pure HA powders were obtained with close to theoretical yields at pH = 10 and 11. The crystallite sizes of the powders varied from about 30 nm at 90°C to 50-90 nm at 1250°C with the smallest crystallite sizes obtained for pH 10 and 11 powders at 1250°C. The crystallite size increased significantly with aging temperature.en_US
dc.language.isoengen_US
dc.publisherTrans Tech Publicationsen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCrystallite sizeen_US
dc.subjectHydroxyapatiteen_US
dc.subjectPowderen_US
dc.subjectPrecipitationen_US
dc.titlePreparation and characterization of hydroxyapatite /calcium phosphate powdersen_US
dc.typeconferenceObjecten_US
dc.relation.journalKey Engineering Materialsen_US
dc.contributor.departmentIzmir Institute of Technology. Chemical Engineeringen_US
dc.identifier.volume264-268en_US
dc.identifier.startpage2075en_US
dc.identifier.endpage2078en_US
dc.identifier.wosWOS:000223059700498
dc.identifier.scopusSCOPUS:2-s2.0-8644246827
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US


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