中文摘要：

以TC4钛合金为基底，采用阳极氧化法在其表面制备Ti02膜，再用十七氟癸基三甲氧基硅烷修饰TiO2膜。利用OCA20视频光学接触角测量仪测得基底、TiO2膜、TiO2／氟硅烷复合膜表面对去离子水的静态接触角分别为62°、2°、158°，表面润湿性经历了由亲水到超亲水再到超疏水的转变。室温下，以球／平面接触方式，采用440-C不锈钢球为摩擦对偶件，利用UMT-2多功能微摩擦磨损试验机测试仪对试样进行摩擦磨损试验。结果表明，基底摩擦系数在0．4左右，TiO2膜和TiO2／氟硅烷复合膜摩擦系数在0．1左右，TiO2膜具有减摩特性；基底磨损表现为磨粒磨损，TiO2膜和TiO2／氟硅烷复合膜则表现为塑性变形及轻微的磨粒磨损。

英文摘要：

TiO2 film on TC4 titanium alloy substrate were acquired by anodic oxidation, then it was modified by （Heptadecafluoro-1,1,2,2-tetradecyl） trirnethoxysilane. OCA20 cont-act angle measuring system was used to measure the static contact angle of deionized water on the substrate＇s surface, the TiO2 film＇s, the composite film of TiO2/fluo- rosilane＇s, which were 62°, 7°, 158°, the wettability of substrate convert from hydrophilicity to superhydrophhilicity then to superhydrophobicity. At room temperature, the friction and wear tests of specimens were carried out on a UMT-2 universal micro-tribometer using the ball/plane contact mode, and the friction dual part was 440-C stainless steel ball. The result indicate that substrate＇s friction coefficient was about 0.4, TiO2 film＇s and TiO2/fluoroalkylsilane composite film＇s were about 0. 1, TiO2 film possessed antifriction characteristics; the wear mechanism of substrate was abrasive wear, the TiO2 film and TiO2/fluoroalkylsilane composite film were showed plastic deformation and a slight abrasive wear.