Wear resistance of smooth TiO2 coating obtained by anodic oxidation and sol-gel dip-coating combination - Research Data & Supplemental Files

The data represents the results of wear tests using a reciprocating ball-on-flat equipment. The counterpart was a conical, hemispherical tip with a radius of 10 microns. The counterpart oscillated at 0.7 Hz with an amplitude of 4 mm. The loads applied were 39, 78, 117, and 156 mN for 1, 2, 3, and 4 minutes, respectively. The tests were conducted at 22 ± 2 °C, with 40 ± 10% humidity, and without lubrication. The tests were performed on: -Two samples of Ti-6Al-4V (TI-1 and TI-2) -Two samples of Ti-6Al-4V coated with compact and crystalline TiO2, with a thickness of approximately 100 nm (TSS-1 and TSS-2). -Four samples of Ti-6Al-4V coated with crystalline and semicompact TiO2, with a thickness of approximately 600 nm (TASS-1, TASS-2, TASS-3 y TASS-4). All surfaces had the same roughness: Ra = 50 nm (measured with a profilometer) and Ra = 15 nm (measured with an AFM). For each wear scar, the following measurements were taken: -The width of the wear scar (2r) -The penetration of the counterpart (d) -The volume of wear (V).本数据集为采用往复式球-平面（ball-on-flat）摩擦磨损试验机开展的磨损试验结果。试验所用对磨副（counterpart）为半径10 μm的锥形半球形端头，该对磨头以0.7 Hz的频率、4 mm的振幅做往复运动。试验分别施加39、78、117、156 mN的载荷，对应试验时长依次为1、2、3、4分钟。所有试验均在温度22±2 ℃、相对湿度40±10%且无润滑的环境中进行。 试验针对以下试样展开： - 2组Ti-6Al-4V基体试样（编号TI-1、TI-2） - 2组沉积致密结晶态TiO₂涂层的Ti-6Al-4V试样，涂层厚度约100 nm（编号TSS-1、TSS-2） - 4组沉积结晶半致密TiO₂涂层的Ti-6Al-4V试样，涂层厚度约600 nm（编号TASS-1、TASS-2、TASS-3、TASS-4） 所有试样表面粗糙度一致：采用轮廓仪（profilometer）测得的算术平均偏差（Ra）为50 nm，采用原子力显微镜（AFM）测得的Ra为15 nm。 针对每个磨损磨痕，开展以下三项测量： - 磨损磨痕宽度（2r） - 对磨头压入深度（d） - 磨损体积（V）