We report the synthesis of novel titanium dioxide nanotube arrays (TNAs) via an anodization process using five different kinds of titanium foils as working electrodes. This reveals that the morphology of TNAs in impacted by the purity, conductivity, and mechanical properties of the titanium sheets. Under the same electrochemical conditions, when titanium foil with purity of 99.7% was used as the working electrode, the TNAs with maximum aspect ratio was obtained compared to that prepared by low purity metal substrate. We also track and observe the morphology of the secondary oxidized TNAs, and demonstrate the relationship with different purites of Ti foils. The fact that the adhesion of anodic TNAs to Ti substrates closely relates to the residual stress of substrates is also revealed. Specifically, cathodic pulse doping results show that the black appearance of TNAs is strongly dependent on the purity of different Ti foils.

我们报告了通过阳极氧化工艺合成新型二氧化钛纳米管阵列 (TNA)，使用五种不同的钛箔作为工作电极。这表明 TNA 的形态受钛片的纯度、导电性和机械性能的影响。在相同的电化学条件下，当使用纯度为 99.7% 的钛箔作为工作电极时，与低纯度金属基体制备的 TNA 相比，获得了最大纵横比的 TNA。我们还跟踪和观察了二次氧化 TNA 的形态，并证明了与 Ti 箔不同纯度的关系。还揭示了阳极 TNA 对 Ti 基材的附着力与基材的残余应力密切相关的事实。具体来说，