Slippery Liquid-infused Porous Surface Fabricated on Aluminum Maintains Stable Corrosion Resistance at Elevated Temperatures

Abstract

Material corrosion induced by temperature variations is one of the main threats to materials immersed in complex and changeable marine environments. Superhydrophobic surfaces (SHS) are promising for protecting the underlying metal from corrosion. However, temperature variations in underwater environments have hindered the practical application of SHS, thus, their corrosion protection ability is limited. However, slippery liquid infused porous surfaces (SLIPS) can compensate for the aforementioned defects of SHS. In this research, a kind of SLIPS was designed over aluminum for marine corrosion applications using a three-step procedure, consisting of anodization, fluorination and solvent exchange method. The as-prepared SHS and SLIPS were characterized with scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and wettability measurement, and their corrosion properties were investigated by electrochemical impedance spectroscopy (EIS). With the perfluorinated lubricant and aluminium oxide coating, the SLIPS presented high corrosion resistance (2.06 × 10 9 Ω cm 2) in a broad temperature range.

Superhydrophobic Shish-kebab Membrane with Self-Cleaning and Oil/Water Separation Properties

“…The superhydrophobic surface, on which the water droplet can form a contact angle larger than 150° and sliding angle lower than 10°, has aroused intensive interests, mainly inspired by the nature of a water-repellent surface. − Such a superhydrophobic surface generally shows performances of biomimicking antisticking, contamination prevention, water repellency, self-cleaning, and oil/water separation. ,− The methods to achieve a superhydrophobic surface include two steps, namely, the construction of rough structures and chemical modification with low-surface-energy materials. − Recently, some artificial techniques have been successfully employed to prepare superhydrophobic surfaces, including chemical etching, − colloidal coating, , anodic oxidation, layer-by-layer deposition, polymer reconformation, − electrospinning, and templating. , However, the existing drawbacks (e.g., high-cost, low-efficiency, tedious, and time-consuming treatments, or processing with intricate instruments) have obstructed their further practical applications …”

Advances in Waterborne Acrylic Resins: Synthesis Principle, Modification Strategies, and Their Applications

“…With the research and application of slippery liquid-infused porous surfaces, the anticorrosive coating modified by nanostructures is also gradually favored. 23 3.4. Application in Wood Furniture.…”

“…However, the cost of organic fluorine modification and phosphate functional monomer modification is high, and the process is complex, so the practical value of this research direction is not high. With the research and application of slippery liquid-infused porous surfaces, the anticorrosive coating modified by nanostructures is also gradually favored …”

Thermally Conductive Anticorrosive Epoxy Nanocomposites with Tannic Acid-Modified Boron Nitride Nanosheets

“…Metal corrosion has caused great economic losses to most industrialized countries. − It is of a great significance to choose and adopt reasonable anticorrosion methods to protect metal materials, prolong service life, and reduce maintenance cost. According to the mechanism of action, metal anticorrosion technology can be divided into coating protection − (such as organic coating, , metal plating coating, , ceramic coating, etc. ), electrochemical protection, − and changes in the properties of corrosive media .…”