THE INFLUENCE OF PROCESSING PARAMETERS ON THE MICROSTRUCTURE OF WCNiCrBSi LASER CLAD COATINGS

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

THE INFLUENCE OF PROCESSING PARAMETERS ON THE MICROSTRUCTURE OF WCNiCrBSi LASER CLAD COATINGS

Popis výsledku v původním jazyce

Laser cladding is a progressive technology enabling to deposit coatings in thickness higher than 1 mm. In comparison with the conventional overwelds it offers the advantage of thinner heat-affected zone in the substrate material and lower and better controlled inner residual stress and related deformation. Compare to thermal sprayed coatings, it provides the metallurgical bonding to the substrate and fully dense coating microstructure with zero porosity, enabling the full corrosion protection of substrate. The range of materials deposited by laser cladding is limited to metals and its alloy due to the principle of technology, requiring the simultaneous melting of substrate surface layer and added coating materials. To improve the wear resistance, the hard particles such as carbides are added to the feedstock powder. During deposition process, the kinetics of melting and solidification of both metal and carbide particles are controlled by used technological parameters of laser. In the paper, the influence of deposition parameters on the geometrical characteristics and microstructure of WC-NiCrBSi laser clad coating is presented with attention paid namely to the hard particles decomposition and its influence on the measured hardness.

Název v anglickém jazyce

THE INFLUENCE OF PROCESSING PARAMETERS ON THE MICROSTRUCTURE OF WCNiCrBSi LASER CLAD COATINGS

Popis výsledku anglicky

Laser cladding is a progressive technology enabling to deposit coatings in thickness higher than 1 mm. In comparison with the conventional overwelds it offers the advantage of thinner heat-affected zone in the substrate material and lower and better controlled inner residual stress and related deformation. Compare to thermal sprayed coatings, it provides the metallurgical bonding to the substrate and fully dense coating microstructure with zero porosity, enabling the full corrosion protection of substrate. The range of materials deposited by laser cladding is limited to metals and its alloy due to the principle of technology, requiring the simultaneous melting of substrate surface layer and added coating materials. To improve the wear resistance, the hard particles such as carbides are added to the feedstock powder. During deposition process, the kinetics of melting and solidification of both metal and carbide particles are controlled by used technological parameters of laser. In the paper, the influence of deposition parameters on the geometrical characteristics and microstructure of WC-NiCrBSi laser clad coating is presented with attention paid namely to the hard particles decomposition and its influence on the measured hardness.

Druh

D - Stať ve sborníku

CEP obor

JK - Koroze a povrchové úpravy materiálu

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

METAL 2016-25th Anniversary International Conference on Metallurgy and Materials

ISBN

978-80-87294-67-3

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

963-968

Název nakladatele

TANGER Ltd

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

25. 5. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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