Micro-arc oxidation enhances the wear resistance and corrosion resistance of oil–water separating mesh

Xue, Bowen; He, Lin; Chai, Guiquan; Wang, Changkai; Yang, Huiyun; Lu, Hailin

doi:10.1007/s10853-022-07707-6

Cited by 12 publications

(3 citation statements)

References 47 publications

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“…[13][14][15] The coating created by MAO technology possesses significant tribological properties. [16][17][18] However, MAO, as a process involving spark reactions, is a very complicated process that depends on a substantial number of parameters such as voltage, solution ratio, temperature, and so on. Selecting the suitable parameters in the experiment can form a ceramic oxide coating with the proper thickness and better wear resistance to extend its wear life.…”

Section: Introductionmentioning

confidence: 99%

“…In the 1970s, Markow's experiment successfully deposited oxides on the Al anode, and the technique was also known as MAO subsequently 13–15 . The coating created by MAO technology possesses significant tribological properties 16–18 . However, MAO, as a process involving spark reactions, is a very complicated process that depends on a substantial number of parameters such as voltage, solution ratio, temperature, and so on.…”

Section: Introductionmentioning

confidence: 99%

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Effect of current density and polytetrafluoroethylene on the properties of micro‐arc oxide coating of pure aluminum

Chen

Xu³

et al. 2023

Int J Applied Ceramic Tech

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Micro-arc oxidation (MAO) is a surface treatment technology that enhances the surface properties of valves by creating a ceramic oxide layer on the metal surface. The goal of this study is to investigate the influence of current density on the properties of aluminum coatings during preparation and to improve the tribological properties of MAO/PTFE self-lubricating films on the coating surface. The characterization of the coating was performed using X-ray photoelectron spectroscopy, X-ray diffraction, Raman spectra, and energy dispersive spectroscopy. The roughness, hardness, and elastic modulus of the coatings were tested using atomic force microscopy and nanoindentation. Tribological experiments were conducted to evaluate the tribological properties of the coatings.The experimental results show that the friction coefficient (COF), roughness, hardness, and elastic modulus of the MAO coating increase with the increase of current density. Additionally, the friction coefficient of the MAO composite coating significantly decreases after the addition of polytetrafluoroethylene (PTFE), improving the service life and application range of the metal coating.These findings are expected to promote the development of valve metal in various application fields.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of current density and polytetrafluoroethylene on the properties of micro‐arc oxide coating of pure aluminum

Chen

Xu³

et al. 2023

Int J Applied Ceramic Tech

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“…By “coating”, a hierarchically rough film covers or grows out of porous hosts to obtain superwettable membranes [ 4 ]. This strategy mainly includes physical coating [ 5 ], surface redox [ 6 ], and chemical modification [ 7 ]. These coated membranes can efficiently purify oily wastewater.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Superhydrophobic Porous Brass by Chemical Dealloying for Efficient Emulsion Separation

Zhou,

Ye,

Han

et al. 2023

Molecules

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By taking advantage of typical dealloying and subsequent aging methods, a novel homogeneous porous brass with a micro/nano hierarchical structure was prepared without any chemical modification. The treatment of commercial brass with hot concentrated HCl solution caused preferential etching of Zn from Cu62Zn38 alloy foil, leaving a microporous skeleton with an average tortuous channel size of 1.6 μm for liquid transfer. After storage in the atmosphere for 7 days, the wettability of the dealloyed brass changed from superhydrophilic to superhydrophobic with a contact angle > 156° and sliding angle < 7°. The aging treatment enhanced the hydrophobicity of the brass by the formation of Cu2O on the surface. By virtue of the opposite wettability to water and oil, the aged brass separated surfactant-stabilized water-in-oil emulsions with separation efficiency of over 99.4% and permeate flux of about 851 L·m−2·h−1 even after recycling for 60 times. After 10 times of tape peeling or sandpaper abrasion, the aged brass maintained its superhydrophobicity, indicating its excellent mechanical stability. Moreover, the aged brass still retained its superhydrophobicity after exposure to high temperatures or corrosive solutions, displaying high resistance to extreme environments. The reason may be that the bicontinuous porous structure throughout the whole foil endows stable mechanical properties to tolerate extreme environments. This method should have a promising future in expanding the applications of alloys.

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Growth behavior and insulation property of the oxide layer during micro-arc oxidation of aluminium in “soft” regime condition

Song

Chen

et al. 2023

J Mater Sci

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Micro-arc oxidation enhances the wear resistance and corrosion resistance of oil–water separating mesh

Cited by 12 publications

References 47 publications

Effect of current density and polytetrafluoroethylene on the properties of micro‐arc oxide coating of pure aluminum

Effect of current density and polytetrafluoroethylene on the properties of micro‐arc oxide coating of pure aluminum

Fabrication of Superhydrophobic Porous Brass by Chemical Dealloying for Efficient Emulsion Separation

Growth behavior and insulation property of the oxide layer during micro-arc oxidation of aluminium in “soft” regime condition

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