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首页> 外文期刊>Electrochimica Acta >A electro-deposition process for fabrication of biomimetic super-hydrophobic surface and its corrosion resistance on magnesium alloy
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A electro-deposition process for fabrication of biomimetic super-hydrophobic surface and its corrosion resistance on magnesium alloy

机译：仿生超疏水表面的电沉积工艺及其对镁合金的耐蚀性

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摘要

Super-hydrophobic surface has many special functions that are studied wildly. The ingenious micro-structures of typical plant leaves with super-hydrophobicity enlighten researchers to design and fabricate artificial super-hydrophobic surface. Being the lightest alloy among structural metals materials magnesium alloy was restricted due to its poor corrosion resistance. A super-hydrophobic surface with self-cleaning was successfully deposited on AZ91D magnesium alloy by the nickel plating process. The super-hydrophobic surfaces were covered with cauliflower-like cluster binary micro-nano structural Ni coatings. The procedure was that the samples were processed by plating after pretreatment, finally modified by stearic acid (CH_3(CH_2)_(16)COOH). The surface morphologies, chemical composition, wettability and corrosion resistance are characterized by means of SEM, FT-IR, water contact angle and electrochemical impedance spectroscopy (EIS) measurements. The as-prepared super-hydrophobic surface has a contact angle as high as 160.8 ± 1° and a SA as low as 1.8 ± 1°, showing good long-term stability. The super-hydrophobic surface exhibited excellent corrosion resistance property in the 3.5 wt. % NaCl solution. This method could provide a straightforward and effective route to fabricate large-area super-hydrophobic surface with anticorrosion and self-cleaning for a great number of potential applications, and easily extended to other metal materials.
机译：超疏水表面具有许多被广泛研究的特殊功能。具有超疏水性的​​典型植物叶片的巧妙微结构启发了研究人员设计和制造人造超疏水性表面。镁合金是结构金属材料中最轻的合金，因其耐腐蚀性差而受到限制。通过镀镍工艺，在AZ91D镁合金上成功沉积了具有自清洁功能的超疏水表面。超疏水表面覆盖着菜花状簇状二元微纳米结构镍涂层。程序是在预处理后通过电镀处理样品，最后用硬脂酸（CH_3（CH_2）_（16）COOH）进行修饰。通过SEM，FT-IR，水接触角和电化学阻抗谱（EIS）测量来表征表面形态，化学成分，润湿性和耐腐蚀性。所制备的超疏水表面的接触角高达160.8±1°，SA则低至1.8±1°，显示出良好的长期稳定性。该超疏水表面在3.5wt。％下表现出优异的耐腐蚀性。 ％NaCl溶液。这种方法可以提供一种直接且有效的方法来制造具有防腐蚀和自清洁功能的大面积超疏水表面，可用于许多潜在的应用，并且很容易扩展到其他金属材料。

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