论文部分内容阅读
采用多弧离子镀技术,在Ti-6Al-4V合金表面沉积TiSiN/Ag纳米多层涂层和TiSiN涂层,研究沉积涂层的结构、抗菌及摩擦学性能.利用X射线衍射仪(XRD),X射线光电子能谱仪(XPS)和透射电子显微镜(TEM)表征涂层的成分和结构,用纳米压痕仪测试涂层的硬度.采用Rtec往复式摩擦磨损试验机对涂层在海水环境中的摩擦学性能进行研究,评价了涂层对大肠埃希氏菌和枯草芽孢杆菌的抗菌性能.结果表明:与TiSiN涂层相比,TiSiN/Ag多层涂层表现出较低的摩擦系数;两种涂层在海水中磨损率远小于Ti-6Al-4V基底,其中,TiSiN/Ag多层涂层比TiSiN涂层在海水环境中表现出较低的磨损率;对TiSiN/Ag多层涂层进行24 h抗菌试验后,该涂层对大肠杆菌和枯草芽孢杆菌的抑菌率分别达到99.98%和100%.
TiSiN / Ag multilayered coatings and TiSiN coatings were deposited on the surface of Ti-6Al-4V alloy by multi-arc ion plating technique to study the structure, antibacterial and tribological properties of the deposited coatings.Using X-ray diffraction (XRD) , X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) were used to characterize the composition and structure of the coating. The hardness of the coating was measured with a nanoindenter. The Rtec reciprocating friction and wear tester was used to measure the hardness of the coating in the seawater environment The tribological properties of the coatings were evaluated and the antibacterial properties of the coatings on Escherichia coli and Bacillus subtilis were evaluated.The results show that TiSiN / Ag multilayer coatings exhibit lower friction coefficient than TiSiN coatings . The wear rates of the two coatings in seawater are far less than that of Ti-6Al-4V substrates. TiSiN / Ag multilayer coatings show a lower wear rate than TiSiN coatings in seawater environment. Antibacterial test of the coating for 24 h, the inhibition rate of the coating on Escherichia coli and Bacillus subtilis reached 99.98% and 100% respectively.