Nowadays, scalable manufacturing of superamphiphobic surfaces by a simple and efficient method remains challenging. Herein, we developed a facile and efficient strategy for constructing superamphiphobic surfaces on Cu substrates, including press molding, oxidation, and fluorination modification. The prepared superamphiphobic surface not only has repellency and low viscosity to water, ethylene glycol, and 30% ethanol (surface tension: 33.53 mN• m −1 ) but can also achieve excellent self-cleaning properties through these liquids. Scanning electron microscopy images revealed that this superamphiphobic surface had multiple hybrid structures, including microflowers, nanoneedles, and micropillar arrays. Owing to the high chemical stability of the C−F group, the obtained surface also exhibited excellent corrosion resistance. The preparation method of superamphiphobic surfaces with all these advantages does not require complicated equipment and has great advantages in terms of low cost and high efficiency, which not only endows this method with broad application prospects but is also makes it suitable for industrial scalable production.
Magnesium alloys have been widely used as a new medical metal implant material because of their good physicochemical properties, biodegradability and biocompatibility. But magnesium alloys are very chemically active and easily corroded after being implanted in the human body. In this paper, a hydroxyapatite/fatty acid salt superhydrophobic composite film was prepared on the surface of magnesium alloys by hydrothermal method. By testing, the water contact angle of the prepared composite film layer reaches 154.5°, and the corrosion current density is reduced by two orders of magnitude, which effectively improves the corrosion resistance of magnesium alloys. The hydrophobic properties of the prepared superhydrophobic composite membrane show good chemical stability. This preparation method can have good application prospects in industry and medical materials because of its simplicity and efficiency.
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