生物医学工程研究Issue(2)：108-112,5.
镍钛合金表面含银二氧化钛薄膜的水热制备与性能
Hydrothermal Preparation and Properties of Ag-containing TiO2 Film on NiTi Alloy
摘要
Abstract
When NiTi alloy was hydrothermally treated in AgNO3 solution,a film with particles of 60~90 nm in size was formed on the surface,and there are Ag-containing particles (about 90 nm)on the film.In X-ray diffraction,weak diffraction peaks of an-atase TiO2 and pure silver were detected.X-ray photoelectron spectroscopy analysis showed that the hydrothermally grown TiO2 film nearly covered the NiTi substrate,and Ag existed in the metallic state.The Ag-TiO2 film had good UV light-induced hydrophilicity. The potentiodynamic polarization test in a Ca-free Hank′s balanced salt solution showed that the hydrothermally treated sample had better corrosion resistance than the polished one,but Ag doping leaded to the change of the anodic polarization current.The polished NiTi sample has no inhibitory effect on Staphylococcus aureus,but the hydrothermally treated sample has antibacterial property in dark-ness,forming an inhibition zone with the average width of ~1 .2 mm.关键词
镍钛合金/水热/二氧化钛/耐蚀性/抗菌Key words
NiTi alloy/Hydrothermal/TiO2/Corrosion resistance/Antibacterial分类
医药卫生引用本文复制引用
王宇宁,杨水云,孙见敏,赵军超,Alajmi Zafer,付涛..镍钛合金表面含银二氧化钛薄膜的水热制备与性能[J].生物医学工程研究,2014,(2):108-112,5.基金项目
国家自然科学基金资助项目（50901058）；中央高校基本科研业务费专项资金（xjj2011096）资助项目。 （）
