RESUMEN
The fabrication of hydroxyapatite-Co-ferrite nanocomposite coatings was performed on stainless steel by chronoamperometry technique. HA-CoFe2O4 nanocomposite films were characterized using X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometer (VSM). The results reveal that CoFe2O4 nanoparticles dispersed within the HA matrix have flake and strip shapes. The magnetic property of the nanocomposite was increased by increasing the concentration of CoFe2O4 and a good saturation magnetization value was found to be 20.6emu/g with 50% CoFe2O4. By comparing with pure CoFe2O4, the composite still retain moderate magnetization as well as its biocompatible characters. The specific absorption rate (SAR) values were altered according to the change in CoFe2O4 concentration and the maximum SAR value was 125W/g. The incorporation of CoFe2O4 nanoparticles with HA coating was increased the corrosion resistance of HA in simulated body fluid (SBF). The results indicated that HA-CoFe2O4 nanocomposite coating could be a promising surface treatment technique for stainless steel medical implants as well hyperthermia treatment of cancer.