Synthesis and Characterization of Composite Coating of Iron Oxide and Bioactive Glass, Coated by Electrophoretic co-Deposition Method for Biomedical Applications

Prevention of infection and bioactivity of implantable parts in the body is one of the most important issues investigated in medical research in recent years. In this regard, researchers have conducted many studies in order to increase the bioactivity of implantable parts in the body. Increasing the bioactivity of these parts has been done in different ways, while coating the surface of the parts is considered as one of the best methods in this field. In this research, simultaneous coating of iron oxide nanoparticles (magnetite) along with 45S5 bioactive glass on AISI 316 stainless steel substrate was deposited by electrophoretic method to increase the bioactivity and the possibility of hyperthermic applications. X-ray diffraction analysis confirmed the presence of both iron oxide nanoparticles and bioactive glass. Electron microscope was employed to study the coating surface. Conducting surface investigations by surface roughness and wetting angle measurements, it was shown that the roughness of the coated surface was 49.2±1 µm and the wetting angle of this coating was obtained to be 49°. The results declared that this coating had a surface with medium roughness and hydrophilic properties, which was of great importance for bioactivity performance. Investigating the magnetic properties of the coating, magnetometric evaluation was performed on the synthesized samples. The saturation magnetization and the Hc parameter values of the coating were obtained to be 20.2 emu/g and 89 Gauss, respectively.