Surface engineering of spray-formed aluminium-silicon alloys by plasma nitriding and subsequent electron beam remelting

Jung, A.; Buchwalder, Anja; Hegelmann, Eugen; Hengst, P.; Zenker, Rolf

doi:10.1016/j.surfcoat.2017.12.016

Cited by 14 publications

(12 citation statements)

References 6 publications

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“…Publication [17] presents tests results related to the melting of a thermally sprayed material subjected to plasma nitriding (leading to the hardening of the material surface). The deposited material was powder having the following composition 15.8% Si, 5.1% Fe, 2.6% Cu, 0.5% Mg and Al -balance.…”

Section: Applicationmentioning

confidence: 99%

“…9. Abrasive wear resistance of: base material -BM, after plasma nitriding-PN and electron beam melting -EB, in a watery and oily environment [17] was made on the substrate of the Nb + 10% W alloy using the stir-casting method. Afterwards, for 30 minutes, the layer was subjected to sintering at a temperature of 1350°C and under a pressure of 0.1 Pa.…”

Section: Applicationmentioning

confidence: 99%

See 1 more Smart Citation

Electron Beam Melting of Thermally Sprayed Layers – Overview

Węglowski¹,

Jachym²,

Krasnowski³

et al. 2021

EBIS

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Thermal spraying is one of the most common methods enabling the deposition of variously-purposed layers on surfaces of structural elements. However, in certain cases, the process of spraying itself is ineffective in terms of the stability and properties of protective layers. One of the possible solutions making it possible to reduce the porosity and improve the adhesion of surfaced layers involves their melting using the concentrated electron beam. The article contains an overview of reference publications concerning electron beam melting technologies.

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Section: Applicationmentioning

confidence: 99%

Section: Applicationmentioning

confidence: 99%

Electron Beam Melting of Thermally Sprayed Layers – Overview

Węglowski¹,

Jachym²,

Krasnowski³

et al. 2021

EBIS

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show abstract

“…At the paper 16 the results of investigation into wear resistance of aluminum alloy with high content of Si, Fe and Cu after combined treatment of surface involving the plasma nitriding followed by electron beam remelting were presented. In order to avoid the loss of hardness during the thermal cycle of nitriding in plasma (480 °C) the consecutive processing: plasma nitriding followed by electron beam remelting was used.…”

Section: Introductionmentioning

confidence: 99%

Effect of Electron-Plasma Treatment on the Microstructure of Al-11wt%Si Alloy

et al. 2020

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The analysis of structure, defect substructure, elemental and phase compounds and friction properties of Al-11wt%Si alloy surface layer of subjected to complex treatment was carried out by methods of scanning and transmission electron microscopy. Complex treatment includes the electroexplosion influence by Al-Y 2 O 3 compound and subsequent electron beam irradiation. The surface layer ≈ 80 μm thick is formed by high-velocity crystallization cells of 0.8-1.3 μm in dimension. Interlayers 50-75 nm thick located along the cells of high-velocity crystallization are enriched by atoms of silicon and yttrium. Complex surface treatment leads to the increase by 18 times in wear resistance and decrease by 1.6 times in the friction factor of the modified layer.

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“…The plasma sprayed layers are usually characterized by porosity. In order to reduce it, the processes of laser beam remelting [5][6][7][8][9][10] or electron beam [11][12][13] can be used.…”

Section: Introductionmentioning

confidence: 99%

Laser remelting of Ni-Cr-Re plasma spraying coating

Węglowski

Dworak

Dymek

et al. 2020

METAL 2020 Conference Proeedings

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The plasma spray technology allows spraying a wide variety of materials. Atmospheric plasma spraying (APS) consists in injecting a powder feedstock material in a plasma jet to melt and accelerate the injected particles and spray them onto a substrate. The coating growth is thus realized by the impingement and spreading of sprayed particles. This mechanism of coating formation induces the presence of pores and micro-cracks. In order to eliminate those drawbacks, laser remleting may be used to improve the properties and performances of plasma sprayed coatings. In the present paper, the Ni20%C + 20%Re coating fabricated by plasma spraying on stainless steel substrate were remelted by CO2 laser, and the effect of laser remelting on microstructure and hardness of plasma sprayed Ni20%Cr + 20%Re coating were studied. The microstructure of plasma sprayed and laser remelted coatings were analyzed using scanning election microscopy (SEM) and energy disperse spectroscopy (EDS). The micro-hardness of coating was measured using micro-hardness tester. The results show that the laser remelted coating becomes much denser moreover, the chemical composition of the coatings becomes homogeneous

show abstract

Surface engineering of spray-formed aluminium-silicon alloys by plasma nitriding and subsequent electron beam remelting

Cited by 14 publications

References 6 publications

Electron Beam Melting of Thermally Sprayed Layers – Overview

Electron Beam Melting of Thermally Sprayed Layers – Overview

Effect of Electron-Plasma Treatment on the Microstructure of Al-11wt%Si Alloy

Laser remelting of Ni-Cr-Re plasma spraying coating

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