Improved bioceramic coatings reinforced by nanostructured talc

Nano-talc was successfully incorporated in the hydroxyapatite matrix via pulsed electrodeposition after being obtained using an eco-friendly liquid-phase exfoliation process. Scanning electron microscopy, atomic force microscopy, X-ray spectroscopy, Raman spectroscopy, corrosion and wear resistance, and cytocompatibility tests were used to characterize the biocomposite ceramics. Talc significantly improves the nanomechanical and wear properties of bioceramics (i.e., higher stiffness, reduced friction coefficient, and lower wear damage) as well as corrosion resistance. Talc does not induce cytotoxic activity in in vitro cells and may induce bone maturation as per biocompatibility tests. [Display omitted] •2D nanometric talc was obtained from soapstone, an inexpensive and abundant mineral.•2D nanometric talc was incorporated in hydroxyapatite via a simple and efficient technique.•2D talc greatly reduces friction coefficient and increases stiffness of hydroxyapatite coatings.•2D talc prevents the formation of cracks leading to superior corrosion resistance.•Talc is non-cytotoxic and promotes bone maturation.