High temperature corrosion behaviour of nicr-based coatings applied by twin wire arc spray technology

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00566152" target="_blank" >RIV/61389021:_____/21:00566152 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/47718684:_____/21:N0000016

Výsledek na webu

<a href="https://www.confer.cz/metal/2021/4185-high-temperature-corrosion-behaviour-of-nicr-based-coatings-applied-by-twin-wire-arc-spray-technology" target="_blank" >https://www.confer.cz/metal/2021/4185-high-temperature-corrosion-behaviour-of-nicr-based-coatings-applied-by-twin-wire-arc-spray-technology</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/metal.2021.4185" target="_blank" >10.37904/metal.2021.4185</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High temperature corrosion behaviour of nicr-based coatings applied by twin wire arc spray technology

Popis výsledku v původním jazyce

High temperature corrosion is a serious problem related to the combustion of heavy oils with high vanadium contents. Protective overlay coatings are used to allow functioning of engineering components under extreme conditions and provide corrosion resistance to extend the component life. This article is concerned with the high temperature corrosion behaviour of two protective NiCr-based coatings and bare structural steel 1.4959 (W.nr.) in a molten salt environment of 40% Na2SO4 and 60% V2O5 at 750 °C under cyclic condition. NiCr and NiCrMoNbTa coating was deposited on steel 1.4903 (W.nr.) by Twin wire arc spray technology (TWAS). To establish the kinetics of corrosion, the thermogravimetric technique was used. The X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS) techniques were used to analyse the corrosion products and determine the corrosion mechanism. The hot corrosion resistance of both coatings was better than bare steel samples. The NiCrMoNbTa coating showed better corrosion behaviour than the NiCr coating. However, also the NiCr coating provides sufficient protection to the substrate material.

Název v anglickém jazyce

High temperature corrosion behaviour of nicr-based coatings applied by twin wire arc spray technology

Popis výsledku anglicky

High temperature corrosion is a serious problem related to the combustion of heavy oils with high vanadium contents. Protective overlay coatings are used to allow functioning of engineering components under extreme conditions and provide corrosion resistance to extend the component life. This article is concerned with the high temperature corrosion behaviour of two protective NiCr-based coatings and bare structural steel 1.4959 (W.nr.) in a molten salt environment of 40% Na2SO4 and 60% V2O5 at 750 °C under cyclic condition. NiCr and NiCrMoNbTa coating was deposited on steel 1.4903 (W.nr.) by Twin wire arc spray technology (TWAS). To establish the kinetics of corrosion, the thermogravimetric technique was used. The X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS) techniques were used to analyse the corrosion products and determine the corrosion mechanism. The hot corrosion resistance of both coatings was better than bare steel samples. The NiCrMoNbTa coating showed better corrosion behaviour than the NiCr coating. However, also the NiCr coating provides sufficient protection to the substrate material.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2021. 30th Anniversary International Conference on Metallurgy and Materials. Conference proceedings

ISBN

978-80-87294-99-4

ISSN

2694-9296

e-ISSN

—

Počet stran výsledku

6

Strana od-do

(2021)

Název nakladatele

TANGER

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

26. 5. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—