High velocity suspension flame sprayed (HVSFS) potassium-based bioactive glass coatings with and without TiO2 bond coat

► High velocity suspension flame sprayed (HVSFS) bioglass coatings onto Ti plates. ► Coating microstructure is controlled by the heat flux from the HVSFS torch. ► Tensile adhesion strength is improved by using a plasma-sprayed TiO2 bond coat. ► Coatings develop a hydroxyapatite layer when soaked in simulated body fluid (SBF). ► Promising coatings when short osseointegration times are required.