Quality Analysis of Aluminized Surface Layers Produced by Electrospark Deposition

Кірік, Г. В.; Гапонова, О. П.; Tarelnyk, Viacheslav; Myslyvchenko, О. М.; Antoszewski, B.

doi:10.1007/s11106-018-9944-6

Cited by 29 publications

(6 citation statements)

References 2 publications

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“…There are different technologies which improve the tribological properties of friction surfaces under lubricated and non-lubricated conditions using aluminum and other materials [79][80][81], but in most cases, they are designed for use with flat and novel surfaces. The idea of combining two widely used surface treatment methods (PEO and ASC) arose regarding the problem of restoring expensive and heavily worn critical parts of complex geometries.…”

Section: Discussion Of the Possibilities Of Using The Described Resultsmentioning

confidence: 99%

The Tribological Properties of Plasma Electrolytic Oxidation Layers Synthesized on Arc Spray Coatings on Aluminum Alloys in Contact with Various Friction Materials

Hvozdets’kyi,

Padgurskas,

Student

et al. 2024

Coatings

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Oxide layers on the surface of the aluminum alloys D16 and AMg6 and on arc coatings sprayed with electrode wires made of the alloys D16 and AMg6 were synthesized using plasma electrolytic oxidation (PEO). The microstructure, phase composition and micro-hardness of the PEO layers were studied. In addition to the two main phases (α-Al2O3 and γ-Al2O3), a small amount of a metastable crystalized Al2.427O3.64 phase was found in their structure. A comparison was made of the wear resistance and friction coefficients of the synthesized PEO layers during friction tests in pairs with other PEO layers, a galvanic chromium coating, cast iron, steels and bronze of the BrC30 type. The results of the friction tests for the various PEO layers on aluminum alloys in tribo-contact with high-hardness elements made of hardened or chrome-plated steel justify the possibility of their use in a friction pair. We experimentally showed the influence of glycerin additive in motor oil 15W30 on the change in the friction coefficient of the PEO layers synthesized on the aluminum alloys and on the arc-sprayed coatings on their surfaces in tribocouples with hardened steel.

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Section: Discussion Of the Possibilities Of Using The Described Resultsmentioning

confidence: 99%

The Tribological Properties of Plasma Electrolytic Oxidation Layers Synthesized on Arc Spray Coatings on Aluminum Alloys in Contact with Various Friction Materials

Hvozdets’kyi,

Padgurskas,

Student

et al. 2024

Coatings

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“…The initial roughness of the coatings depends on discharge energy during the deposition of the electrospark process and the material to be deposited [18,19]. The roughness was measured at the initial coatings, RS, and counter-body (disks) surfaces.…”

Section: Surface Roughnessmentioning

confidence: 99%

Investigation of the Lubricated Tribo-System of Modified Electrospark Coatings

et al. 2023

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This work presents the results of tribological tests of Mo and combined coatings TiAlC formed using electrospark alloying (ESA) technology and additionally processed using thermochemical electrolyte anodic heating (TEAH). ESA makes it possible to form 15–20 µm thick coatings on the friction surface, characterized by a high hardness and wear resistance. Tribological studies were performed by testing the block-on-roll friction pair under 300 N and 600 N loads. The duration of the tests was 180 km of friction path, and the constant rotation rate of the disk was 600 rpm. It was observed that the friction torque during the 300 N loading tests was stable for all samples and throughout the entire testing period, whereas at 600 N loading, the pair with the Mo coating had a decreasing trend, and the pair with the TiAlC coating, friction torque slightly increased. For a reference sample without the coating trend of friction torque became drastically unstable. At both loads (300 N and 600 N), the friction pair with the reference sample had the highest cumulative wear, and the pair with the Mo coating had the lowest. At both loads, the cumulative wear of the friction pair with Mo coating is about 2 times lower than the TiAlC, and ≥1.8 times lower than the control (not coated) version. This study shows that at lower loads, the friction pair formed by the TiAlC coating and steel C45 is more matched than the friction pair with Mo coating.

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“…This process generates a very high-velocity flame which is used to propel the particles at near-supersonic speeds before making an impact on the substrate [11]. Secondly, selective laser melting (SLM) [12,13] in 3-D printing, additive or prototype manufacturing techniques [13], thirdly electro-spark deposition technique [6,14,15] Fourthly, laser cladding [16,17] but all these techniques have a shortcoming in terms of low deposition rate, higher cost, and fuel energy requirement.…”

Section: Introductionmentioning

confidence: 99%

“…The atmospheric plasma spraying technique [15,18,19] has emerged as a promising method to spray HEAs on the substrate. In this spraying method, feedstock (powder, wire, liquid, or suspension form) is deposited on the substrate after heating at a temperature of around 10,000 K to 15,000 K [20,21] Semi-molten or molten drops flatten, promptly solidify and form a solid deposit.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Corrosion Behavior of Atmospheric Plasma Sprayed NiCoCrAlFe High Entropy Alloy Coating

Mehmood¹,

Umer²,

Munawar³

et al. 2022

Materials

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High entropy alloys (HEAs) are multi-elemental alloy systems that exhibit a combination of exceptional mechanical and physical properties, and nowadays are validating their potential in the form of thermal sprayed coatings. In the present study, a novel synthesis method is presented to form high entropy alloy coatings. For this purpose, thermal sprayed coatings were deposited on Stainless Steel 316L substrates using atmospheric plasma spraying technique with subsequent annealing, at 1000 °C for 4 h, to assist alloy formation by thermal diffusion. The coatings in as-coated samples as well as in annealed forms were extensively studied by SEM for microstructure and cross-sectional analysis. Phase identification was performed by X-ray diffraction studies. The annealed coatings revealed a mixed BCC and FCC based HEA structure. Potentiodynamic corrosion behavior of SS316L sprayed as well as annealed coatings were also carried out in 3.5% NaCl solution and it was found that the HEA-based annealed coatings displayed the best corrosion resistance 0.83 (mpy), as compared to coated/non-annealed and SS 316 L that showed corrosion resistance of 7.60 (mpy) and 3.04 (mpy), respectively.

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Quality Analysis of Aluminized Surface Layers Produced by Electrospark Deposition

Cited by 29 publications

References 2 publications

The Tribological Properties of Plasma Electrolytic Oxidation Layers Synthesized on Arc Spray Coatings on Aluminum Alloys in Contact with Various Friction Materials

The Tribological Properties of Plasma Electrolytic Oxidation Layers Synthesized on Arc Spray Coatings on Aluminum Alloys in Contact with Various Friction Materials

Investigation of the Lubricated Tribo-System of Modified Electrospark Coatings

Microstructure and Corrosion Behavior of Atmospheric Plasma Sprayed NiCoCrAlFe High Entropy Alloy Coating

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