Recrystallization of Amorphous Phases via Post-Coating Heat-Treatment of Plasma-Sprayed Hydroxyapatite Coatings

摘要

Plasma-sprayed hydroxyapatite coating suffer from amorphous phases which dissolve in body fluid environment. An attempt has been made to reduce these amorphous phases by post-coating heat treatment of plasma-sprayed specimens. The specimens after post-coating heat treatment were analyzed using scanning electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. The results showed that amorphous calcium phosphates converted into crystalline hydroxyapatite at 500°C, and calcium oxide was present even after heat treatment at 900°C. A very fine crystalline hydroxyapatite phase of around 100 nm in size was formed at 900°C.View full textDownload full textKeywordsBiomaterials, Characterization, FESEM, FTIR, Microstructure, Porosity, Recrystallization, Ti, XRDRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/10426914.2011.610083