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Download fileRobust Slippery Coating with Superior Corrosion Resistance and Anti-Icing Performance for AZ31B Mg Alloy Protection
journal contribution
posted on 2017-03-09, 00:00 authored by Jialei Zhang, Changdong Gu, Jiangping TuBiomimetic slippery
liquid-infused porous surfaces (SLIPSs) are developed as a potential
alternative to superhydrophobic surfaces (SHSs) to resolve the issues
of poor durability in corrosion protection and susceptibility to frosting.
Herein, we fabricated a double-layered SLIPS coating on the AZ31 Mg
alloy for corrosion protection and anti-icing application. The porous
top layer was infused by lubricant, and the compact underlayer was
utilized as a corrosion barrier. The water-repellent SLIPS coating
exhibits a small sliding angle and durable corrosion resistance compared
with the SHS coating. Moreover, the SLIPS coating delivers durable
anti-icing performance for the Mg alloy substrate, which is obviously
superior to the SHS coating. Multiple barriers in the SLIPS coating,
including the infused water-repellent lubricant, the self-assembled
monolayers coated porous top layer, and the compact layered double
hydroxide–carbonate composite underlayer, are suggested as
being responsible for the enhanced corrosion resistance and anti-icing
performance. The robust double-layered SLIPS coating should be of
great importance to expanding the potential applications of light
metals and their alloys.