Facile electrodeposition of superhydrophobic aluminum stearate thin films on copper substrates for active corrosion protection

Xu, Wenji; Rajan, Karthikeyan; Chen, X. Grant; Sarkar, Dilip

doi:10.1016/j.surfcoat.2019.02.070

Cited by 34 publications

(12 citation statements)

References 46 publications

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“…Alternatively, many researchers reported superhydrophobic surfaces' fabrication by one-step electrodeposition using an electrolyte solution comprising suitable metal salts and long-chain fatty acids. 15,[55][56][57][58][59][60][61][62]et al,and Rasitha,et al, reported the fabrication of superhydrophobic surfaces on Mg and 9Cr-1Mo alloy surfaces, respectively, via one-step electrodeposition using electrolyte solutions comprising Ce, myristic acid, and ethanol. 14,38 Both studies reported that the deposited Ce-myristate could impart superhydrophobic functionality and improve corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Cerium Stearate Electrodeposited Superhydrophobic Coatings for Active Corrosion Protection of Anodized AA2024-T3

et al. 2021

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The present study investigated the active corrosion protection provided by superhydrophobic cerium stearate coatings. Superhydrophobic cerium stearate was deposited on anodized AA 2024-T3 at 40 V with different electrodeposition times using a simple DC electrodeposition technique to know the role of electrodeposition time on surface morphology, hydrophobicity, and corrosion resistance. We characterized the structure and morphology of cerium stearate to understand its formation mechanism. Electrodeposition process at 40 V for 120 min resulted in the formation of dual scale Allium giganteum like micro/nano hierarchical texture of cerium stearate with a water contact angle (WCA) of 165 ± 1.6°. The cerium stearate coating obtained for 120 min process time had excellent self-cleaning property and good chemical stability, environmental stability, and mechanical durability acceptable for industrial applications. Electrochemical impedance spectroscopy (EIS) and scanning vibrating electrode technique (SVET) were used to investigate the active corrosion protection of cerium stearate coating. The electrodeposited cerium stearate coating showed active corrosion protection based on self-healing ability by releasing cerium (Ce3+) ions.

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Section: Introductionmentioning

confidence: 99%

Cerium Stearate Electrodeposited Superhydrophobic Coatings for Active Corrosion Protection of Anodized AA2024-T3

et al. 2021

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“…To obtain the superhydrophobic surface, the following two conditions must be satisfied: constructing the surface of a micron-scale rough structure and reducing the surface free energy [12][13][14][15]. The commonly used surface energy reducing materials include fluorosilane [16,17], stearic acid [18], etc. The main methods to the construct micron-scale rough structure are surface chemical etching [19,20], layer upon layer self-assembly [21], laser ablation [22], etc.…”

Section: Introductionmentioning

confidence: 99%

Study on Preparation of Superhydrophobic Ni-Co Coating and Corrosion Resistance by Sandblasting–Electrodeposition

Zhang

Shen

et al. 2020

Coatings

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To enhance the corrosion resistance of type C45E4 substrates, a superhydrophobic Ni-Co coating was prepared on a C45E4 surface by sandblasting pretreatment and electrodeposition. The surface microstructure, three-dimensional surface roughness, and crystal structure of the coating was characterized by scanning electron microscope, laser scanning confocal microscope, and X-ray diffraction. An optical surface contact angle measuring instrument and an electrochemical workstation was used to characterize the wettability and corrosion resistance of the surface. The results showed that the water contact angle reached 151.2 degrees on the Ni-Co coating surface. The surface was superhydrophobic and still had stable hydrophobicity after four months. In electrochemical corrosion experiments. Compared with polishing pretreatment, the corrosion current density of superhydrophobic Ni-Co coating prepared by sandblasting pretreatment reached Icorr = 5.05 × 10−7 A·cm−2, and the corrosion potential reached Ecorr = −0.33 V. The superhydrophobic Ni-Co coating had excellent corrosion resistance.

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“…Its intensity seems to be related also to the carboxylate signal. This finding and the strong similarity of the spectra with that of the pure magnesium stearate (Figure 6) suggest the presence of aluminium stearate [27] formed during the contact with flame. At the same time, the FT-IR of the cross-section of the burned disc (Figure 6) shows very weak signals that can be associated with stearic acid and aluminium stearate, whereas the signals of the ATH are still clearly visible.…”

Section: Resultsmentioning

confidence: 59%

Flame behaviour of magnesium and aluminium hydroxide-filled polymer composites used in power and telecom cables

Roda

Galletti²,

Truscello

et al. 2021

Plastics, Rubber and Composites

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The effect of flame contact on Low Smoke Zero Halogen (LS0H) polyethylene-based model composite used for power cable has been investigated, focusing the attention on the fate of aluminium trihydroxide (ATH) and magnesium dihydroxide (MDH) utilized as flame retardant fillers. By using a flame reproducing the calorific value of EU CPR Regulation, during the contact with flame, the composite with magnesium hydroxide shows the formation of intermediate carbonate, which further decomposes giving the oxide. The same finding was observed in the blank test performed on pure MDH. This feature was not observed in ATH composite and pure one. The higher decomposition temperature of MDH, together with the formation of carbonate could play a key role in the higher efficiency of MDH compared to that of ATH. Moreover, we report that the stearic acid, present in the composite as compatibiliser and as processing aid, seems to migrate towards the external surfaces.

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Facile electrodeposition of superhydrophobic aluminum stearate thin films on copper substrates for active corrosion protection

Cited by 34 publications

References 46 publications

Cerium Stearate Electrodeposited Superhydrophobic Coatings for Active Corrosion Protection of Anodized AA2024-T3

Cerium Stearate Electrodeposited Superhydrophobic Coatings for Active Corrosion Protection of Anodized AA2024-T3

Study on Preparation of Superhydrophobic Ni-Co Coating and Corrosion Resistance by Sandblasting–Electrodeposition

Flame behaviour of magnesium and aluminium hydroxide-filled polymer composites used in power and telecom cables

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