INFLUENCE OF HVOF SPRAYED COATINGS ON FATIGUE PROPERTIES OF COATINGSUBSTRATE SYSTEM

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F15%3A%230000601" target="_blank" >RIV/47718684:_____/15:#0000601 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

INFLUENCE OF HVOF SPRAYED COATINGS ON FATIGUE PROPERTIES OF COATINGSUBSTRATE SYSTEM

Popis výsledku v původním jazyce

This research deals with the influence of thermally sprayed HVOF (High Velocity Oxygen Fuel) coatings on fatigue life of components. HVOF coatings are now a widespread technology commonly used for additional treatment of component surfaces. The advantages particularly consist in achieving of low coating porosity, high adhesion to the base material and residual compressive stress in the surface coating layer. The main application areas of HVOF coatings are applications requiring high surface hardness and wear resistance (pistons, rods, cylinder presses, etc.). Two coatings were evaluated in this study - carbide based coating (Cr3C2-NiCr) and alloy based coating (Stellite 6). The tests were carried out at room temperature and at 600 °C. The main contribution of this paper is to evaluate the coating influence on fatigue properties of coating-substrate system in comparison with the fatigue properties of the substrate itself. In particular, it was examined whether and how the increase or decrease of fatigue properties occurs in this system. The obtained results prove that both evaluated coatings reduce overall fatigue resistance; however, by Stellite 6 coating the reduction of fatigue properties is not so noticeable.

Název v anglickém jazyce

INFLUENCE OF HVOF SPRAYED COATINGS ON FATIGUE PROPERTIES OF COATINGSUBSTRATE SYSTEM

Popis výsledku anglicky

This research deals with the influence of thermally sprayed HVOF (High Velocity Oxygen Fuel) coatings on fatigue life of components. HVOF coatings are now a widespread technology commonly used for additional treatment of component surfaces. The advantages particularly consist in achieving of low coating porosity, high adhesion to the base material and residual compressive stress in the surface coating layer. The main application areas of HVOF coatings are applications requiring high surface hardness and wear resistance (pistons, rods, cylinder presses, etc.). Two coatings were evaluated in this study - carbide based coating (Cr3C2-NiCr) and alloy based coating (Stellite 6). The tests were carried out at room temperature and at 600 °C. The main contribution of this paper is to evaluate the coating influence on fatigue properties of coating-substrate system in comparison with the fatigue properties of the substrate itself. In particular, it was examined whether and how the increase or decrease of fatigue properties occurs in this system. The obtained results prove that both evaluated coatings reduce overall fatigue resistance; however, by Stellite 6 coating the reduction of fatigue properties is not so noticeable.

Druh

D - Stať ve sborníku

CEP obor

JK - Koroze a povrchové úpravy materiálu

OECD FORD obor

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Projekt

<a href="/cs/project/TA02010486" target="_blank" >TA02010486: Výzkum a vývoj žárově stříkaných povlaků pro energetický průmysl</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

24th International Conference on Metallurgy and Materials

ISBN

978-80-87294-62-8

ISSN

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e-ISSN

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Počet stran výsledku

2149

Strana od-do

975-980

Název nakladatele

Tanger Ltd.

Místo vydání

Ostrava, ČR

Místo konání akce

Hotel Voroněž I, Brno, Czech Republic

Datum konání akce

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Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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