The use of low-temperature plasma in a combined technology for the formation of wear-resistant boron-containing coatings

Klopotov, A. A.; Ivanov, Yu. F.; Потекаев, А. И.; Abzaev, Yu. A.; Калашников, М. П.; Чумаевский, А. В.; Volokitin, O. G.; Тересов, А. Д.; Vlasov, V. A.; Klopotov, Vladimir D.

doi:10.1016/j.surfcoat.2020.125576

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…[4][5] The block structure and the number of grid elements along each of block sides to calculate the jet without a diffuser is shown in We calculated the flow in ANSYS CFX by control volume analysis using the compressible ideal gas model, enthalpy complete equation to calculate thermal transfer concerning variable density, and k-ε turbulence model. [6][7][8] Given the jet inlet temperature equal to 10 700 К, the air velocity at inlet being 770 m/s, is lower than the sound speed (Mach number 0,3-0,4), that is why we chose the subsonic condition of jet inlet ( Figure Figure 10). [7] The area around the jet is considered as an adiabatic wall.…”

Section: Methodsmentioning

confidence: 99%

Numerical Simulation of Plasma Spraying Performance Index

Frolov

Klochkov

2020

E3S Web Conf.

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In recent years, there has been an increasing interest in plasma jet numerical simulation. Speed and temperature propagation in axial and radial direction in plasma jet significantly influences on speed and temperature of sprayed material and therefore on coating quality. However, there are few studies concerning plasma jet numerical simulation in modern software systems and they describe a specific problem. It is a wellknown fact that using simple structural components such as plasmatron heads for plasma thermal spraying allows us to increase the quality of zirconium oxide coatings by increasing the speed of spraying particles and decreasing their spread value and allows to increase economic efficiency of the process by increasing the operation factor of spraying material. However, scientists have not studied well the influence of the plasmatron head, which looks like a cone element, and the simulation of a high temperature flow along the channel is not mentioned in publications. Therefore, it is necessary to research the flow of a high temperature current along the channel of the head.

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Section: Methodsmentioning

confidence: 99%

Numerical Simulation of Plasma Spraying Performance Index

Frolov

Klochkov

2020

E3S Web Conf.

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“…One of the surface treatment methods which enables the formation of the required structure of the surface layer of constructional elements operating under friction conditions is laser treatment [ 1 , 2 , 3 , 4 , 5 , 6 ]. The surface layers produced in this way show favorable tribological properties in the form of the required hardness, fracture toughness, abrasion resistance and corrosion resistance [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. Improving the microstructure of surface layers and coatings is also mentioned as one of the advantages of using laser techniques in surface treatment [ 14 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…Other authors indicate that this process also provides a lower coefficient of friction, good oxidation and resistance to erosion [ 14 , 20 , 22 ]. Boron content in the laser treatment steel layer significantly reduces the wear under dry friction conditions [ 15 , 22 , 23 , 24 ]. Tests in dry sand/rubber wheel conditions showed that the abrasive wear of Fe 50 Mn 30 Co 10 Cr 10 was reduced by up to 30% compared to the material without laser treatment [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Analysis of Tribological Processes in Friction Pairs with Laser Borided Elements Lubricated with Engine Oils

et al. 2020

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The present study discusses the influence of engine oils on the tribological parameters of sliding couples with laser borided surface layer. The borided layer was formed on specimens made from AISI 5045 steel by laser remelting of a surface layer coated with amorphous boron. The sliding friction and wear process was carried out on the pairs with AISI 5045 steel and SAE-48 bearing alloys which were lubricated with 5W-40 and 15W-40 engine oils. The investigation showed significant differences in the friction coefficient and temperature in the tested pairs with the laser borided surface layer. In the couples lubricated with 5W-40 engine oil, the tested parameter of friction was higher than in the couples lubricated with 15W-40 engine oil. The couples lubricated with 5W-40 engine oil showed more intensive wear of SAE-48 bearing alloy in contact with the laser borided surface layer than the pairs lubricated with 15W-40 engine oil. The laser borided surface layer used in friction pairs leads to the destruction of the lubricating properties of engine oils and reduces its resistance to scuffing.

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Mechanical Properties and Wear Resistance of Microarc Diffusion Coatings on Steel

Stepanov

Dombrovsky

2022

Metallurgist

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The use of low-temperature plasma in a combined technology for the formation of wear-resistant boron-containing coatings

Cited by 8 publications

References 20 publications

Numerical Simulation of Plasma Spraying Performance Index

Numerical Simulation of Plasma Spraying Performance Index

Experimental Analysis of Tribological Processes in Friction Pairs with Laser Borided Elements Lubricated with Engine Oils

Mechanical Properties and Wear Resistance of Microarc Diffusion Coatings on Steel

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