Fabricating Bionic Ultraslippery Surface on Titanium Alloys with Excellent Fouling-Resistant Performance

Abstract

Becauseof the high strength-to-weight ratio and excellent corrosion resistance, titanium alloys are widely applied in marine industries. However, titanium alloys suffer from serious biofouling problems for their good biocompatibility. Slippery lubricant-infused porous surface (SLIPS) exerts a positive effect on inhibiting the attachment of marine microorganism. In this work, SLIPS was fabricated on TC4 (Ti-6Al-4V) alloys through anodic oxidation, 1H,1H,2H,2H,-perfluorooctyltriethoxysilane (POTS) modification and polyperfluoromethyl isopropyl ether (PFPE) infusion to improve the antifouling property of TC4 alloys. The antifouling effect of all coatings was investigated and compared to obtain the antifouling mechanism of SLIPS through recording the settlement of E. coli and Navicula exigua. The results showed that three different kinds of nanostructures were fabricated on TC4 alloys by anodic oxidation. The nanotubes with the largest internal volumes were conducive to storing more lubricant and firmly holding the lubricant for a long time. The SLIPS could effectively suppress the attachment of E. coli and Navicula exigua on account of the ultraslippery behavior of lubricant layer. In particular, the SLIPS-30 V fabricated by the largest nanotubes displayed a long-term anti-adhesion behavior. Besides, the SLIPS could improve the corrosion resistance of TC4 alloys. Hence, such SLIPS with excellent fouling-resistant and anti-corrosion performance could be applied to titanium alloys or other alloys to expand their application in the marine area.

Inhibition Effectiveness of Laser-Cleaned Nanostructured Aluminum Alloys to Sulfate-reducing Bacteria Based on Superwetting and Ultraslippery Surfaces

“…The driving force was not perpendicular to the interface but was parallel to the interface. Besides, the lubricant PFPE was confirmed to be nontoxic to the bacteria (Figure S12 in the Supporting Information); the corresponding result was consistent with that of Zhang et al and Zhao et al , …”

“…The driving force was not perpendicular to the interface but was parallel to the interface. Besides, the lubricant PFPE was confirmed to be nontoxic to the bacteria (Figure S12 in the Supporting Information); the corresponding result was consistent with that of Zhang et al and Zhao et al 39,44 ■ CONCLUSIONS In this work, the Al alloys treated with laser cleaning were subjected to antibacterial tests with respect to marine bacteria D. desulfuricans subsp. desulf uricans.…”

“…The surfaces exhibited superior fouling resistance to E. coli and Navicula exigua . Neto et al reported that the infused polymeric surfaces displayed at inhibited growth of Pseudoalteromonas spp.…”

Designing a Highly Stable Slippery Organogel on Q235 Carbon Steel for Inhibiting Microbiologically Influenced Corrosion

“…Tuo et al fabricated the SLIPS on an aluminum substrate through infusing a lubricant into a microscale rough layered double hydroxide coating through chemical etching and hydrothermal treatment, which also exhibited excellent anticorrosion performance owing to the existence of a lubricant layer in simulated seawater . However, the rough substrate and lubricant oil of the SLIPS were prone to being destroyed under external force such as swabbing, liquid flowing, and so on. , Thus, it was vital to improve the stability of the substrate and lubricant oil for its long-term antifouling, anticorrosion, and other performances. − For example, Xie et al successfully fabricated a highly lubricating oil-stable SLIPS with a porous structure and raised fiber structure through mixing epoxy resin, 300 μm carbon fiber, and volatile acetone . Also, they verified that the SLIPS with that structure possessed excellent oil capacity after spinning the surface or immersing it in seawater.…”

Detection of nanobubbles between two liquid layers using atomic force microscopy meniscus force-distance measurements

“…[5] Here, we report a method to detect and map the presence of gas layers on structured hydrophobic surfaces covered with a thin layer of a hydrophobic oil. This type of surface is known as lubricant-infused surface (LIS) and has been the topic of intense research over the past decade due to their desirable properties introduced by the presence of the entrapped lubricant layer, [7] such as anti-fouling, [8][9][10][11][12][13][14][15] anti-icing, [16][17][18][19] condensation enhancement [13,[20][21][22] and drag reduction [23][24][25][26][27][28][29][30].…”