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  • Title: Processing and in vitro behavior of hydroxyapatite coatings prepared by electrostatic spray assisted vapor deposition method.
    Author: Hou X, Choy KL, Leach SE.
    Journal: J Biomed Mater Res A; 2007 Dec 01; 83(3):683-91. PubMed ID: 17530629.
    Abstract:
    Hydroxyapatite (HA) bioactive coatings are often used to improve bone attachment and reduce corrosion of metal prosthesis implants. This paper reports the preparation of HA coatings onto titanium substrates using a novel electrostatic spray assisted vapor deposition (ESAVD)-based method. The deposited coatings are characterized using a combination of Fourier transform infrared spectrometer, X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and scratch test. The results confirm that well-crystallized HA coatings can be produced directly via the single-step ESAVD process, without further heat-treatment. The in vitro behavior of the as-deposited HA coating in simulated body fluid (SBF) is also presented. After 14-day immersion in SBF, the adhesion of the HA coating to the substrate increases significantly.
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