Two-step bipolar anodization: Design of titanium with two different faces
Two-step bipolar anodization: Design of titanium with two different faces
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DOI：
10.1016/j.elecom.2022.107376
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发表时间：
2022-09-01
影响因子：
5.4
通讯作者：
Asoh, Hidetaka
中科院分区：
文献类型：
--
作者：
Kokubo, Yuuka;Asoh, Hidetaka
在这项研究中，使用两步直流 (DC) 双极阳极氧化形成具有两个化学性质不同的面的钛 (Ti)。将钛片垂直放置在电解池的中心作为双极电极（BPE）。使用干涉色来可视化 BPE 上的氧化区域，该干涉色是在 DC 电场下磷酸中在 Ti BPE 上形成阻挡型氧化膜而引起的。当第一步和第二步的驱动电极之间施加不同的电压时，由于膜厚度的差异，BPE的正面和背面呈现出不同的颜色。即使在球形 Ti BPE 的情况下，无论 BPE 的形状如何，都可以使用无线和无掩模操作来演示位点选择性成膜。
In this study, titanium (Ti) with two chemically distinct faces was formed using two-step direct current (DC) bipolar anodization. A Ti sheet was positioned vertically in the center of an electrolytic cell as a bipolar electrode (BPE). The oxidation area on the BPE was visualized using an interference color caused by the formation of a barrier-type oxide film on the Ti BPE in phosphoric acid under a DC electric field. When different voltages were applied between the driving electrodes for the first and second steps, the front and back sides of the BPE showed different colors because of differences in film thickness. Even in the case of a ball-shaped Ti BPE, site-selective film formation could be demonstrated using a wireless and maskless operation, regardless of the shape of the BPE.