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1239 |
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Wednesday, June 04, 2008, Room 05 2:20 PM Biomedical Coatings Coated implants offer a better life quality due to their superior osseointegration and longer life cycle |
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Design of experiment of synhesis and plasma spraying of hydroxyapatite suspension |
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Lech Pawlowski* / University of Limoges, SPCTS UMR 6638, France Roman Jaworski / , Villeneuve d'Ascq, France Christel Pierlot/ , Villeneuve d'Ascq, France Muriel Bigan/ , Villeneuve d'Ascq, France Chagnon Pierre/ , Saint Fons, France |
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The synthetic hydroxyapatite (HA: Ca10(PO4)6(OH)2) is a very useful material for numerous applications in medicine as a biomaterial, especially in view of using as precursors for suspension plasma spraying. Fine hydroxyapatite powder was synthesized using aqueous solution of ammonium phosphate (H2(PO4)NH4) and calcium nitrate (Ca(NO3).4H2O) using a carefully controlled experiment with 7 factors. The synthesized fine powder was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and differential thermal analysis (DTA). The powder was formulated into water and alcohol based suspension and used to plasma spraying onto titanium substrate. The phase analysis of sprayed coating was made with the used of XRD and the phase content was related with the parameters of spraying and of powder synthesis. |