Detail publikačního výsledku

Failure of Gadolinium Zirconate and Yttria Stabilized Zirconia Thermal Barrier Coatings Subjected to High Temperature Calcia-Magnesia-Alumino-Sisicate Attack

ČELKO, L.; JECH, D.; TKACHENKO, S.; KOMAROV, P.; REMEŠOVÁ, M.; SLÁMEČKA, K.; CTIBOR, P.

Originální název

Failure of Gadolinium Zirconate and Yttria Stabilized Zirconia Thermal Barrier Coatings Subjected to High Temperature Calcia-Magnesia-Alumino-Sisicate Attack

Anglický název

Failure of Gadolinium Zirconate and Yttria Stabilized Zirconia Thermal Barrier Coatings Subjected to High Temperature Calcia-Magnesia-Alumino-Sisicate Attack

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Nowadays, the contribution of rare-earth oxide compounds is extensively investigated with the aim to improve the service life of gas turbine engine components protected by thermal barrier coatings (TBCs) against the environmental Calcia-Magnesia-Alumino-Silicate (CMAS) attack. Therefore, the TBCs consisting of NiCrAlY bond coat, Yttria Stabilized Zirconia (YSZ) and/or mixture of YSZ and Gadolinium Zirconate (YSZ+GZ) interlayers, and a GZ top coat, which were all deposited by atmospheric plasma spraying onto the nickel-based superalloy substrates, are introduced in this contribution. The CMAS-attack resistance was evaluated using an indirect method. Firstly, the htin layer of CMAS prepared from colloidal solutions was deposited onto the top coat surface and, after drying, the samples were heat treated with the aim to glassified the CMAS. Secondly, the coated samples containing CMAS glass debris were subjected to rapid heating (up to 1200 °C) and enforced cooling cycles at the burner-rig test device and the failure of TBC was investigated. In all cases, the failure mechanism due to the CMAS attack was the top coat spallation. The functional graded TBC was found to be the most resistant system.

Anglický abstrakt

Nowadays, the contribution of rare-earth oxide compounds is extensively investigated with the aim to improve the service life of gas turbine engine components protected by thermal barrier coatings (TBCs) against the environmental Calcia-Magnesia-Alumino-Silicate (CMAS) attack. Therefore, the TBCs consisting of NiCrAlY bond coat, Yttria Stabilized Zirconia (YSZ) and/or mixture of YSZ and Gadolinium Zirconate (YSZ+GZ) interlayers, and a GZ top coat, which were all deposited by atmospheric plasma spraying onto the nickel-based superalloy substrates, are introduced in this contribution. The CMAS-attack resistance was evaluated using an indirect method. Firstly, the htin layer of CMAS prepared from colloidal solutions was deposited onto the top coat surface and, after drying, the samples were heat treated with the aim to glassified the CMAS. Secondly, the coated samples containing CMAS glass debris were subjected to rapid heating (up to 1200 °C) and enforced cooling cycles at the burner-rig test device and the failure of TBC was investigated. In all cases, the failure mechanism due to the CMAS attack was the top coat spallation. The functional graded TBC was found to be the most resistant system.

Klíčová slova

Atmospheric Plasma Spraying; Thermal Barrier Coatings; Gadolinium Zirconate; Calcia-Magnesia-Alumino-Silicate Glass; High Temperature

Klíčová slova v angličtině

Atmospheric Plasma Spraying; Thermal Barrier Coatings; Gadolinium Zirconate; Calcia-Magnesia-Alumino-Silicate Glass; High Temperature

Autoři

ČELKO, L.; JECH, D.; TKACHENKO, S.; KOMAROV, P.; REMEŠOVÁ, M.; SLÁMEČKA, K.; CTIBOR, P.

Vydáno

19.02.2020

Nakladatel

Elsevier

Místo

Nizozemsko

ISBN

978-80-214-5760-7

Kniha

MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE

ISSN

2452-3216

Periodikum

Procedia Structural Integrity

Svazek

23

Číslo

1

Stát

Nizozemsko

Strany od

360

Strany do

365

Strany počet

6

URL

https://www.sciencedirect.com/science/article/pii/S2452321620301797

Plný text v Digitální knihovně

http://hdl.handle.net/11012/186779

BibTex

@inproceedings{BUT163430,
  author="Ladislav {Čelko} and David {Jech} and Serhii {Tkachenko} and Pavel {Komarov} and Michaela {Remešová} and Karel {Slámečka} and Pavel {Ctibor}",
  title="Failure of Gadolinium Zirconate and Yttria Stabilized Zirconia Thermal Barrier Coatings Subjected to High Temperature Calcia-Magnesia-Alumino-Sisicate Attack",
  booktitle="MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE",
  year="2020",
  journal="Procedia Structural Integrity",
  volume="23",
  number="1",
  pages="360--365",
  publisher="Elsevier",
  address="Nizozemsko",
  doi="10.1016/j.prostr.2020.01.113",
  isbn="978-80-214-5760-7",
  url="https://www.sciencedirect.com/science/article/pii/S2452321620301797"
}