High temperature corrosion behavior of selected thermally sprayed alloy based coatings in aggressive environment at 690 °C

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F19%3AN0000009" target="_blank" >RIV/47718684:_____/19:N0000009 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
High temperature corrosion behavior of selected thermally sprayed alloy based coatings in aggressive environment at 690 °C
Original language description
This study is focused on the hot corrosion evaluation of selected thermal sprayed coatings. NiCoCrAlYHfSi, NiCoCrAlY, NiCoCrAlTaReY and CoCrAlYTaCSi coatings were sprayed on the substrate material 1.4923. This material is used as a cost-efficient construction material for components of power equipment. All evaluated coatings were sprayed using HP/HVOF (High Pressure / High Velocity Oxygen Fuel) technology. Hot corrosion studies were performed in a molten salt environment typical for coal-fired boilers. All coatings were exposed to the environment of Na2SO4 and 82 % Fe2 (SO4)3 at the temperature of 690 °C under cyclic conditions. Each cycle consisted of 1h heating in silicon carbide tube furnace followed by 20 min of cooling. The weight change measurement was performed after each cycle to establish the corrosion kinetics. Scanning electron microscopy (SEM), elemental analysis (EDS) and optical microscopy (OM) were used to analyze the corrosion mechanism. CoCrAlYTaCSi coating showed the best corrosion resistance of all evaluated coatings.
Czech name
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Czech description
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Project
<a href="/en/project/TE01020068" target="_blank" >TE01020068: Centre of research and experimental development of reliable energy production</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
International Thermal Spray Conference and Exposition: New Waves of Thermal Spray Technology for Sustainable Growth
ISBN
978-151088800-5
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
Code 152135
Publisher name
ASM International
Place of publication
USA
Event location
PACIFICO YokohamaYokohama; Japan
Event date
May 26, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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