A simple, easy, and rapid process of fabricating superhydrophobic surfaces on magnesium alloy AZ31 by a one-step immersion at room temperature was developed. The myristic acid-modified micro-/nanostructured surfaces showed static water contact angles over 150° and water contact angle hysteresis below 10°, thus illustrating superhydrophobic property. The shortest treatment time for obtaining the superhydrophobic surfaces was 30 s. In addition, we demonstrated for the first time that crystalline solid myristic acid could be formed on a Mg alloy using a suitable molar ratio of Ce ions and myristic acid. The contact angle hysteresis was lowered with an increase in the immersion time. Potentiodynamic polarization curve measurements revealed that the corrosion resistance of AZ31 treated by the immersion process improved considerably by the formation of superhydrophobic surfaces. The chemical durability of the superhydrophobic surfaces fabricated on AZ31 was also examined. The static water contact angle values for the superhydrophobic surfaces after immersion in aqueous solutions at pHs 4, 7, and 10 for 12 h were estimated to be 90 ± 2°, 119 ± 2°, and 138 ± 2°, respectively, demonstrating that their chemical durability in a basic solution was high.

中文翻译：

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通过简便的一步浸泡工艺在镁合金上快速制备具有耐腐蚀性的结晶肉豆蔻酸基超疏水薄膜

开发了一种简单、容易、快速的方法，通过在室温下一步浸泡在镁合金 AZ31 上制造超疏水表面。肉豆蔻酸改性的微/纳米结构表面表现出超过150°的静态水接触角和低于10°的水接触角滞后，从而说明了超疏水特性。获得超疏水表面的最短处理时间为30 s。此外，我们首次证明，使用适当摩尔比的 Ce 离子和肉豆蔻酸可以在镁合金上形成结晶固体肉豆蔻酸。接触角滞后随着浸泡时间的增加而降低。动电位极化曲线测量表明，经过浸泡工艺处理的AZ31的耐腐蚀性能因超疏水表面的形成而显着提高。还检查了 AZ31 上制造的超疏水表面的化学耐久性。超疏水表面在 pH 值为 4、7 和 10 的水溶液中浸泡 12 小时后的静态水接触角值估计分别为 90 ± 2°、119 ± 2° 和 138 ± 2°，这表明它们在碱性溶液中的化学耐久性很高。