Long-term deterioration of lubricant-infused nanoporous anodic aluminium oxide surface immersed in NaCl solution

Wu, Dequan; Ma, Li; Liu, Bei; Zhang, Dawei; Minhas, Badar; Qian, Hongchang; Terryn, Herman; Mol, J.M.C.

doi:10.1016/j.jmst.2019.12.008

Cited by 15 publications

(5 citation statements)

References 59 publications

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“…A second approach uses fluorescence or UV spectroscopy to measure the volume of lubricant present on the surface with the scope to have much higher sensitivity than mass change. 133,226 Ware et al added the fluorophore Nile Red to silicone oil before infusion. After infusion and depletion steps, the fluorescent lubricant was extracted from the surface and its volume calculated through a volume/fluorescence intensity calibration curve.…”

Section: Indirect Methodsmentioning

confidence: 99%

“…Another often-employed direct measurement technique is scanning electron microscopy (SEM). 37,83,87,112,113,172,181,182,212,226,232,330 Environmental scanning electron microscopy (ESEM) allows for higher chamber pressures, and so allows imaging of liquid systems including water. 338 This technique has been used to image lubricant in both randomly rough substrates and a regular array of micro-pillars, 37 see Fig.…”

Section: Direct Methodsmentioning

confidence: 99%

“…186 Wu et al monitored lubricant loss in a similar way but directly measured concentration using UV spectroscopy. 226 Both these approaches give a reasonable estimate of the volume of oil infused into the surface and can give an estimate into thickness, 134 assuming a flat sample. These techniques, however, can overestimate the amount of lubricant as the lubricant may spread onto the back or sides of the sample and contribute to the volume measurement.…”

Section: Please Do Not Adjust Marginsmentioning

confidence: 99%

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Life and death of liquid-infused surfaces: a review on the choice, analysis and fate of the infused liquid layer

et al. 2020

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Section: Indirect Methodsmentioning

confidence: 99%

Section: Direct Methodsmentioning

confidence: 99%

Section: Please Do Not Adjust Marginsmentioning

confidence: 99%

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Life and death of liquid-infused surfaces: a review on the choice, analysis and fate of the infused liquid layer

et al. 2020

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“…Figure 1A shows the concaved AAO surface formed on the aluminum alloy 2024-T3 substrate. Unlike the hexagonal array of AAO on pure aluminum (Wu et al, 2019;Wu et al, 2021), the uneven morphology of the nanopores on the AAO surface obtained in this study can be attributed to the potential difference between IMPs and the alloy matrix (Abrahami et al, 2017). Figures 1B,C are the top and cross-sectional views of the AAO surface treated with Li 2 CO 3 inhibitors (Li-AAO substrate), presenting a plate-like LDH layer with somewhat irregular spacing (Visser et al, 2016).…”

Section: Resultsmentioning

confidence: 65%

Active Corrosion Protection by Epoxy Coating on Li2CO3-Pretreated Anodized Aluminum Alloy 2024-T3

et al. 2022

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The fast leaching and robust barrier property of inhibitors are the basic fundamentals for the formation of active protective coatings to protect aluminum alloys. Herein, an active protective surface was developed based on an epoxy coating and an underlying lithium carbonate (Li2CO3)-treated anodized aluminum alloy 2024-T3. The morphology of the Li-LDH layer was studied to know its formation mechanism. The electrochemical studies revealed that the fast and adequate leaching of lithium led to a substantial increment of corrosion resistance of the scratched coating in 3.5 wt% NaCl from 1 to 8 days. Time of flight secondary ion mass spectroscopy (ToF-SIMS) results indicated that Li was distributed in the lateral direction and covered the scratched area. The 3D images indicated that different lithium compounds were formed and 90% of the scratched area was covered with the lithium protective layer over immersion time. A combined approach of morphology observations, electrochemical measurements, and ToF-SIMS showed the lithium protective layer offered good corrosion resistance. On the contrary, lithium provided fast and adequate leaching from the coating, demonstrating good active protection for aluminum and its alloys.

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“…Studies by Meiler and Jaschke looked at the effects of dry lubricants on the process chain in the manufacturing of automotive sheet metal and the associated compatibility with common adhesives [15]. The influence of lubricants on the corrosion resistance of alumina in NaCl solution was investigated by WU et al using cryo-scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS); they showed a partial reduction of the corrosion properties by the dry lubricant [16]. By means of density functional theory (DFT) calculations, Blanck et al investigated the wetting behaviour of dry-film lubricants on aluminium surfaces [17].…”

Section: Introductionmentioning

confidence: 99%

Influence of Dry-Film Lubricants on Bond Strength and Corrosion Behaviour of 6xxx Aluminium Alloy Adhesive Joints for the Automotive Industry

Gruber,

Singewald,

Bruckner

et al. 2023

Lubricants

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In the automotive industry, the application of dry lubricants on aluminium is indispensable for achieving a high-quality forming behaviour. To provide a short production time, these forming aids are not removed during the joining step. The aim of this study is the characterisation of the influence of dry lubricants on the bond strength and the corrosion resistance of a 6xxx aluminium alloy for automotive applications. For this purpose, samples with a well-defined surface were coated with 1 g/m2 dry lubricant and joined with a commercial thermosetting 1K epoxy structural adhesive. The bond strength was measured with lap shear tests. To evaluate the corrosion resistance of the adhered aluminium samples, an immersion test in a 5 wt.% NaCl solution was used. Based on the fracture pattern analysis, the corrosion behaviour could be described, and the possible corrosion mechanisms are proposed. The influence of the load quantity of the dry lubricants is observed microscopically and mechanically. The environmentally induced degradation process of the adhesive is examined by an investigation of the volumetric change during the testing and with scanning electron microscopy. Using a simulation, the changes in the adhesive polymer matrix at the metal–adhesive interface caused by the dry lubricants are examined using polymer test procedures like dynamic mechanical analysis, differential scanning calorimetry and tensile tests. The results show a significant effect of the forming aid on the corrosion resistance of the adhered aluminium samples against the corrosive infiltration of the metal–adhesive interface.

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Long-term deterioration of lubricant-infused nanoporous anodic aluminium oxide surface immersed in NaCl solution

Abstract: Long-term deterioration of lubricant-infused nanoporous anodic aluminium oxide surface immersed in NaCl solution

Cited by 15 publications

References 59 publications

Life and death of liquid-infused surfaces: a review on the choice, analysis and fate of the infused liquid layer

Life and death of liquid-infused surfaces: a review on the choice, analysis and fate of the infused liquid layer

Active Corrosion Protection by Epoxy Coating on Li2CO3-Pretreated Anodized Aluminum Alloy 2024-T3

Influence of Dry-Film Lubricants on Bond Strength and Corrosion Behaviour of 6xxx Aluminium Alloy Adhesive Joints for the Automotive Industry

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