The Cnfluence of Chemical Composition of Aluminum Alloys on the Quality of Oxide Layers Formed by Microarc Oxidation

Dudareva, N. Yu.; Gallyamova, Rida

doi:10.1016/j.matpr.2018.12.112

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…When the thickness of the coatings made at 550 V was examined, it was measured as 5 microns in the coating for 10 minutes and 9 microns in the coating for 20 minutes, while the coating thickness of the sample coated for 30 minutes was measured as 8 microns. Increasing the coating time increases the coating thickness by increasing the amount of arc formed on the substrate per unit time (Dudareva & Gallyamova, 2019). On the other hand, the excessive arc that occurs in long coating times disrupts the coating structure.…”

Section: 𝑃 = 𝑉 2 𝑅mentioning

confidence: 99%

The Effect of the Parameters on Al 7075 Coated with MAO Method by Adding Nano Ti-Powder

Özcan

Özler

2022

Gazi University Journal of Science Part A: Engineering and Innovation

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Coating processes are carried out in many areas of industry to improve the surface properties of materials such as wear and corrosion resistance or appearance. One of these coating processes is ceramic-based surface coatings. In order to obtain harder, denser and more uniform coatings, the substrate material is coated with a ceramic-based material at the desired thickness. In this study, 7075 series aluminum was coated with nano Ti powder and non-additive micro arc oxidation (MAO) method in a solution consisting of KOH, NaAlO2 and Na3PO4, and the effects of process parameters on coating thickness and wear behavior were experimentally investigated and the results were analyzed. According to the results obtained, it was observed that as the coating voltage, frequency and coating time increased, the wear rate decreased and a harder structure against wear is obtained. In addition, it was determined that the samples with nano titanium powder were less worn than the non-additive samples. According to SEM, EDX and XRD analyses, Al2O3 phase was observed in the coatings made without adding titanium particles; It has been observed that in addition to the Al2O3 main phase, TiO2 and SiO phases are also formed in titanium doped coatings.

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Section: 𝑃 = 𝑉 2 𝑅mentioning

confidence: 99%

The Effect of the Parameters on Al 7075 Coated with MAO Method by Adding Nano Ti-Powder

Özcan

Özler

2022

Gazi University Journal of Science Part A: Engineering and Innovation

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“…The alloys obtained in this way are characterised by low weight and high impact strength. The greatest influence on increasing the hardness of aluminium is exerted by molybdenum, magnesium, cobalt, manganese, tungsten, vanadium, nickel, titanium, copper, iron, zinc and silicon [6,7]. Nickel and cobalt, as well as magnesium and manganese, increase the strength properties, and titanium and chromium affect grain refinement [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Recent Developments and Future Challenges in Incremental Sheet Forming of Aluminium and Aluminium Alloy Sheets

Trzepieciński

Najm

Oleksik

et al. 2022

Metals

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Due to a favourable strength-to-density ratio, aluminium and its alloys are increasingly used in the automotive, aviation and space industries for the fabrication of skins and other structural elements. This article explores the opportunities for and limitations of using Single- and Two Point Incremental Sheet Forming techniques to form sheets from aluminium and its alloys. Incremental Sheet Forming (ISF) methods are designed to increase the efficiency of processing in low- and medium-batch production because (i) it does not require the production of a matrix and (ii) the forming time is much higher than in conventional methods of sheet metal forming. The tool in the form of a rotating mandrel gradually sinks into the sheet, thus leading to an increase in the degree of deformation of the material. This article provides an overview of the published results of research on the influence of the parameters of the ISF process (feed rate, tool rotational speed, step size), tool path strategy, friction conditions and process temperature on the formability and surface quality of the workpieces. This study summarises the latest development trends in experimental research on, and computer simulation using, the finite element method of ISF processes conducted in cold forming conditions and at elevated temperature. Possible directions for further research are also identified.

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“…Moreover, the ball-on-disk test showed that the friction coefficient, weight loss and wear rate of the MAO coating decreased with the increase in cellulose concentration. Further, the performances of the coatings obtained in the same electrolyte, under different preserved storage periods, were compared, revealing that the cellulose was uniformly dispersed in the electrolyte and improved the tribological properties of the MAO coating within 30 days.MAO process exhibit superior mechanical properties, including excellent adhesive strength [18], high micro-hardness [19], and high thermal conductivity [20] compared with those obtained through other methods. MAO coatings offer several advantages over other coatings.…”

mentioning

confidence: 99%

“…MAO process exhibit superior mechanical properties, including excellent adhesive strength [18], high micro-hardness [19], and high thermal conductivity [20] compared with those obtained through other methods. MAO coatings offer several advantages over other coatings.…”

mentioning

confidence: 99%

Improving the Tribological Performance of MAO Coatings by Using a Stable Sol Electrolyte Mixed with Cellulose Additive

Song

Jiang

2019

Materials

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In this study, micro-arc oxidation (MAO) of aluminum 6061 alloy was carried out within a silicate base electrolyte containing 0.75 g/L of cellulose, and the tribological properties of the coating were investigated. The as-prepared coating was detected by Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), a scanning electron microscope (SEM) and an energy-dispersive spectrometer (EDS), respectively. The results suggested that cellulose filled in the microcracks and micropores, or it existed by cross-linking with Al3+. In addition, it was found that the cellulose had little effect on the coating hardness. However, the thickness and roughness of the coating were improved with the increase in cellulose concentration. Moreover, the ball-on-disk test showed that the friction coefficient, weight loss and wear rate of the MAO coating decreased with the increase in cellulose concentration. Further, the performances of the coatings obtained in the same electrolyte, under different preserved storage periods, were compared, revealing that the cellulose was uniformly dispersed in the electrolyte and improved the tribological properties of the MAO coating within 30 days.

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The Cnfluence of Chemical Composition of Aluminum Alloys on the Quality of Oxide Layers Formed by Microarc Oxidation

Cited by 4 publications

References 10 publications

The Effect of the Parameters on Al 7075 Coated with MAO Method by Adding Nano Ti-Powder

The Effect of the Parameters on Al 7075 Coated with MAO Method by Adding Nano Ti-Powder

Recent Developments and Future Challenges in Incremental Sheet Forming of Aluminium and Aluminium Alloy Sheets

Improving the Tribological Performance of MAO Coatings by Using a Stable Sol Electrolyte Mixed with Cellulose Additive

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