![]() There are various common anti-corrosion methods such as forming passivation layer, coating fabrication and adding corrosion inhibitors, etc. Hence, it is extremely important to have efficient anti-corrosion methods, which will also protect the industrial equipment and expand the application of aluminum alloys. As a material widely used in industrial fields, although aluminum alloys naturally form oxide films in a dry and salt-free environment to prevent further corrosion, they are susceptible to corrosive ion attack in humid and salty environments, which will cause damage to equipment and limit the application of aluminum alloys. This work also provides a promising method for the water-repellent coatings by femtosecond laser processing for metal corrosion prevention in practical industrial applications.Ĭorrosion, as a natural process, causes huge economic losses and major disasters every year. In comparison with the SHS, the SLIPS has a corrosion inhibition efficiency of up to 99.95% and it maintains long-term stability in the corrosive solution. From the comparison of the electrochemical parameters of different immersion times, both water-repellent coatings are effective in protecting the aluminum alloy from corrosion in simulated seawater due to reduced contact area between the metal substrate and corrosive solution. Furthermore, the corrosion resistance properties of SHS and SLIPS in simulated seawater were characterized by electrochemical measurements. The morphology and wettability of the fabricated samples were evaluated by scanning electron microscopy and contact angle measurements. Finally, the SLIPS was fabricated on the SHS by coating lubricant. Then, the SHS was prepared on the above structure by fluorosilane modification. In this work, we first fabricated a micro/nano hierarchical structure on the aluminum surface by femtosecond laser processing. However, how to prepare stable water-repellent coatings that can prevent the intrusion of corrosive ions remains to investigate. Inspired by the lotus leaf and nepenthes pitcher, the superhydrophobic surfaces (SHS) and the slippery liquid-infused porous surfaces (SLIPS) were produced as a potential strategy to prevent metal corrosion. Metal corrosion causes huge economic losses and major disasters every year. ![]()
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