Soiling and corrosion behaviors on fluorinated anodized TiO2 surface infused by perfluoropolyether

Robust Slippery Coating with Superior Corrosion Resistance and Anti-Icing Performance for AZ31B Mg Alloy Protection

“…It indicates a slightly higher CA hysteresis of ∼12°for the present SLIPS coating compared to the previously reported work (usually <10°). 26,29,39 This also leads to a much slower sliding velocity for the water droplet on the SLIPS coating (see Figure S6) compared to the other reported work. 53 Even so, the water droplet can slide off the SLIPS coating in subzero condition, which indicates a promising water repellence and icing resistance.…”

“…54 However, it has been reported that the potentiodynamic polarization measurement is not a proper method to evaluate the SLIPS coating because the overly high scanning potential would destabilize the SLIPS. 39 Therefore, the corrosion resistance of the present coatings were further evaluated through an immersion test in which the specimens were exposed in a 3.5 wt % NaCl solution at room temperature. Figure 6 presents the optical photographs of the bare Mg alloy and the Mg alloys coated with LDH−carbonate, SHS, and SLIPS for the long-term immersion test in the 3.5 wt % NaCl solution.…”

“…The negligible current should mainly act for the charging and discharging of the double layer capacitance because there is no Faraday process . However, it has been reported that the potentiodynamic polarization measurement is not a proper method to evaluate the SLIPS coating because the overly high scanning potential would destabilize the SLIPS . Therefore, the corrosion resistance of the present coatings were further evaluated through an immersion test in which the specimens were exposed in a 3.5 wt % NaCl solution at room temperature.…”

“…Slippery liquid-infused porous surfaces (SLIPSs) have been recently attracted owing to their excellent liquid repellency, − antifouling property, − anti-icing performance, − self-repairing ability, and bacteriostasis as well as corrosion resistance. , The rational design of artificial SLIPSs is inspired by natural Nepenthes pitcher plants, which is on the basis of the superior liquid adsorption capacity of superwetting surfaces and the strategy that using one liquid to repel another immiscible liquid. ,, Although droplet motion on a SLIPS is typically slower than that on a SHS, the stability of the lubricant film under high droplet impact pressures and the high humidity tolerance make the SLIPS a promising alternative to the SHS in some scenarios. , To the best of our knowledge, such biomimetic SLIPSs with multifunctionality have not been fabricated on Mg alloys, especially for corrosion protection and anti-icing application.…”

A contrastive investigation on anticorrosive performance of laser-induced super-hydrophobic and oil-infused slippery coatings

“…Different from super-hydrophobic surface, the slippery surface employs rough micro/nano structures to store the lubricating silicon oil rather than the air pockets. The infused oil can be strongly anchored in the micro/nano structures with the assistance of capillary effect and Van der Waals force [28][29][30]. Three criteria should be considered to successfully fabricate the slippery surfaces: (1) the substrate must have space and vacancy to host the lubricating liquids; (2) it should be immiscible between the lubricating and the external liquids;…”