Elaboration of sol-gel derived hydroxyapatite / yttria stabilized zirconia composite coatings obtained for biomedical application

Sahar Salehi, Mohammad Hosseien Fathi

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    In this study, nanostructured composite coatings of hydroxyapatite (HA)/ 30wt% yttria stabilized zirconia (YSZ) coatings containing 0, 3, 5, and 8 mol% Y2O3 (namely; HA-0YSZ, HA-3YSZ, HA-5YSZ, and HA-8YSZ) were successfully synthesized using the sol-gel method. The crystallite size of the coating was about ∼44-58 nm for tetragonal and cubic zirconia grain size and 75-87 nm for hydroxyapatite grain size. Crack-free and homogeneous HA-YSZ composite coatings were obtained with no observable defects. The uniform distribution of zirconia particles in a composite would be highly beneficial for obtaining homogeneous coatings of HA-YSZ film and would hinder grain growth of HA phase during calcinations. In vitro evaluation in 0.9% NaCl showed that Ca2+ dissolution rate of composite coatings was lower than pure HA coatings.

    Original languageEnglish
    Title of host publicationDiffusion in Solids and Liquids VI
    Subtitle of host publicationMass Transfer - Heat Transfer - Microstructure and Properties - Nanodiffusion and Nanostructured Materials
    PublisherTrans Tech Publications Ltd
    Pages894-899
    Number of pages6
    Volume312-315
    ISBN (Print)9783037851173
    DOIs
    Publication statusPublished - 2011

    Keywords

    • Hydroxyapatite
    • Nanocomposite
    • Nanostructured coatings
    • Sol-gel
    • Yttria
    • Zirconia

    ASJC Scopus subject areas

    • Radiation
    • Materials Science(all)
    • Condensed Matter Physics

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