Facile fabrication of superhydrophobic cerium coating with micro-nano flower-like structure and excellent corrosion resistance
Facile fabrication of superhydrophobic cerium coating with micro-nano flower-like structure and excellent corrosion resistance
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易制备具有微纳花状结构和优异耐腐蚀性的超疏水铈涂层
DOI：
10.1016/j.surfcoat.2014.08.032
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发表时间：
2014-11
影响因子：
5.4
通讯作者：
Huang, Ping
中科院分区：
文献类型：
--
作者：
Liu, Cansen;Su, Fenghua;Liang, Jizhao;Huang, Ping
采用一步电沉积法制备了耐腐蚀超疏水铈（Ce）涂层。在50 V下沉积10 min的Ce涂层表现出超疏水性，其接触角为162°，滑动角小于4°，这是由于其微纳花状结构及其表面产生的肉豆酸铈所致。动电位极化和电化学阻抗谱（EIS）测试表明，制备的超疏水涂层具有优异的耐腐蚀性，可对基体提供有效的保护。超疏水表面的耐腐蚀性能与其润湿性密切相关。此外，超疏水Ce涂层在除强碱性溶液外的各种腐蚀溶液中均表现出较低的腐蚀电流密度，具有良好的化学稳定性。最后，证实了制备的超疏水表面具有低表面能和自清洁能力。认为这种简单、低成本的方法为制备稀土元素超疏水表面提供了一种有效的策略和有前景的工业应用。
Corrosion resistant and superhydrophobic cerium (Ce) coating is fabricated by a one-step electrodeposition process. The Ce coating deposited at 50 V for 10 min displays superhydrophobicity with a contact angle of 162° and a sliding angle less than 4°, which is attributed to its micro-nano flower-like structure and the cerium myristate produced on its surface. The potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) tests show that the as-prepared superhydrophobic coating has excellent corrosion resistance that can provide effective protection for the substrate. The corrosion resistance of the superhydrophobic surface is closely related to their wettability. Moreover, the superhydrophobic Ce coating has good chemical stability because it exhibits low corrosion current density in various corrosive solutions except the solution with strong alkalinity. Finally, it is confirmed that the as-prepared superhydrophobic surface has low surface energy and self-cleaning ability. It is believed that the facile and low-cost method offers an effective strategy and promising industrial applications for fabricating superhydrophobic surfaces consisting of rare earth element.
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