Investigation on Blood Compatibility of Cu/Ti Metal Coating Prepared via Various Bias Voltages and Copper Content

Surface modification of some metal coatings is usually used to improve the blood compatibility biomaterials; however, aspects bological properties cannot be adjusted via content each component. In this work, Cu/Ti with various amounts copper were prepared by physical vapor deposition (PVD) method, and influence bias was further investigated. Phase structure, element composition surface morphology investigated X-ray diffraction (XRD), photoelectron spectroscopy (XPS) scanning electron microscopy, respectively. The hemolysis ratio, platelet adhesion protein adsorption applied evaluate compatibility. results show that a coating uniform quality can obtained; dispersion regulated number sheets, but does not obviously affect coating. rate less than 0.4%, degree significantly reduced on compared control samples, contact angle all greater pure titanium. largest capacity BSA found voltage −40 V. flakes increased, FIB reduced. Therefore, method have potential for applications regulate performance.