Abstract：TiO2 porous films were prepared directly on the surface of TC4 titanium alloy by constant voltage anodic oxidation using sulfuric acid,TC4 and stainless steel plate as electrolyte,anode and cathode,respectively.The micro-morphology of the TiO2 porous films on the substrate was observed by SEM.Meanwhile,phase composition of the porous films on the titanium alloy substrate was determined by XRD.The effects of oxidation process parameters such as the voltage,the anodization time and the concentration of sulphuric acid on the phase composition of TiO2 porous films were investigated.The results showed that,oxide films of titanium alloy after anodic oxidation were heterogeneous TiO2 porous films with pore size ranging from 90nm to 240nm.The XRD analysis showed that the oxide films prepared with different oxidation process parameters were all consisted of annatase and rutile phases.In 0.5mol/L sulfuric acid electrolyte,the annatase and rutile TiO2 appeared when the voltage was higher than 100V or anodization time was longer than 5min,and with the voltage and time increasing the content of rutile TiO2 increased gradually.The annatase and rutile TiO2 appeared with 0.3mol/L sulfuric acid electrolyte at constant voltage(≥120V),and the content of rutile TiO2 increased at first and then decreased with the increasing concentration of sulfuric acid.
衣晓红, 樊占国, 张景垒, 李凤华, 田昂. TC4钛合金表面阳极氧化制备TiO2多孔膜的实验研究[J]. 材料工程, 2010, 0(3): 38-41.
YI Xiao-hong, FAN Zhan-guo, ZHANG Jing-lei, LI Feng-hua, TIAN Ang. Experimental Study of Preparation of TiO2 Porous Films on the Surface of TC4 Titanium Alloy by Anodic Oxidation. Journal of Materials Engineering, 2010, 0(3): 38-41.
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