Thermal Processing of Calcium Phosphate Coatings on Zirconia Ceramics
A two-step, biomimetic approach was applied for the rapid deposition of octacalcium phosphate (OCP) coatings on zirconia ceramics (Y-TZP). In the first step, sintered zirconia discs were immersed into a supersaturated Ca-P solution with pH=7.4 (CPS1). In the second step, the substrates were transferred from the CPS1 to another Ca-P solution with a lower pH (CPS2). After 6 hours of immersion in the CPS2, a thick coating consisting of large OCP crystals was obtained. Afterwards, the coated substrates were subjected to a thermal treatment in order to improve the attachment of the coating to the substrate.
Eyup Sabri Kayali, Gultekin Goller and Ipek Akin
M. Štefanič et al., "Thermal Processing of Calcium Phosphate Coatings on Zirconia Ceramics", Key Engineering Materials, Vols. 493-494, pp. 462-466, 2012