Article failure mechanism of yttria stabilized zirconia atmospheric plasma sprayed thermal barrier coatings subjected to calcia11nesia-alumino-silicate environmental attack
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A10238122" target="_blank" >RIV/61989100:27360/17:10238122 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.270.39" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/SSP.270.39</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.270.39" target="_blank" >10.4028/www.scientific.net/SSP.270.39</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Article failure mechanism of yttria stabilized zirconia atmospheric plasma sprayed thermal barrier coatings subjected to calcia11nesia-alumino-silicate environmental attack
Popis výsledku v původním jazyce
The contribution focuses on the description of failure mechanism of atmospheric plasma sprayed multilayer thermal barrier coatings subjected to calcia-magnesia-alumino-silicate (CMAS) environmental attack. To identify exothermic and endothermic reactions which occurred during heating/cooling by means of calorimetry was also utilized initial yttria stabilized zirconia (YSZ) powder subsequently used for thermal spraying of multilayer thermal barrier coating system (TBCs), CMAS powder later on utilized for thin layer deposition and its mixture. Atmospheric plasma spray technique was used to produce the TBCs on a grit blasted nickel-based superalloy substrates, where CoNiCrAlY powder was used for deposition of a bond coat and YSZ powder was sprayed as a top coat. In accordance to the aerospace standard the thin layer of CMAS was deposited on as sprayed TBCs samples surface from its colloidal solution by paint brush method. Burner-rig test, utilizing direct propane-oxygen flame, was used for thermal cyclic exposition of the multilayer coated samples at the temperature of 1150 °C. Samples after thermal cyclic exposure test were investigated by means of materialographic analysis approaches. The significant reduction in life-time of CMAS coated YSZ top coat was observed due to lower melting point phase formation and molten silicate crystallization within the pores providing the spallation identified as a major mechanism of TBCs failure.
Název v anglickém jazyce
Article failure mechanism of yttria stabilized zirconia atmospheric plasma sprayed thermal barrier coatings subjected to calcia11nesia-alumino-silicate environmental attack
Popis výsledku anglicky
The contribution focuses on the description of failure mechanism of atmospheric plasma sprayed multilayer thermal barrier coatings subjected to calcia-magnesia-alumino-silicate (CMAS) environmental attack. To identify exothermic and endothermic reactions which occurred during heating/cooling by means of calorimetry was also utilized initial yttria stabilized zirconia (YSZ) powder subsequently used for thermal spraying of multilayer thermal barrier coating system (TBCs), CMAS powder later on utilized for thin layer deposition and its mixture. Atmospheric plasma spray technique was used to produce the TBCs on a grit blasted nickel-based superalloy substrates, where CoNiCrAlY powder was used for deposition of a bond coat and YSZ powder was sprayed as a top coat. In accordance to the aerospace standard the thin layer of CMAS was deposited on as sprayed TBCs samples surface from its colloidal solution by paint brush method. Burner-rig test, utilizing direct propane-oxygen flame, was used for thermal cyclic exposition of the multilayer coated samples at the temperature of 1150 °C. Samples after thermal cyclic exposure test were investigated by means of materialographic analysis approaches. The significant reduction in life-time of CMAS coated YSZ top coat was observed due to lower melting point phase formation and molten silicate crystallization within the pores providing the spallation identified as a major mechanism of TBCs failure.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20506 - Coating and films
Návaznosti výsledku
Projekt
—
Návaznosti
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Solid State Phenomena. Volume 270
ISBN
978-3-0357-1241-4
ISSN
1012-0394
e-ISSN
1662-9779
Počet stran výsledku
6
Strana od-do
39-44
Název nakladatele
Trans Tech Publication Ltd
Místo vydání
Zürich
Místo konání akce
Mariánské Lázně
Datum konání akce
6. 6. 2017
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—