Detail publikace

Thermal cycling behaviour of plasma-sprayed thermal barrier coatings with pre-oxidized NiCrAlY and NiCoCrAlY bond-coats

SLÁMEČKA, K. JECH, D. KLAKURKOVÁ, L. TKACHENKO, S. REMEŠOVÁ, M. GEJDOŠ, P. ČELKO, L.

Originální název

Thermal cycling behaviour of plasma-sprayed thermal barrier coatings with pre-oxidized NiCrAlY and NiCoCrAlY bond-coats

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

This contribution deals with thermal cycling of thermal barrier coatings (TBCs) with NiCrAlY and NiCoCrAlY bond-coats, and yttria stabilized zirconia (YSZ) top-coat that were prepared by atmospheric plasma spraying from commercial powders. The samples were pre-oxidized, based on isothermal oxidation of the two bond-coats, in order to diminish the influence of residual stresses after spraying on thermal cycling experiments. Surface topographies of both bond-coats were measured using optical profilometry and several surface parameters were evaluated to characterize them. Microstructural degradation caused by thermal cycling was examined by scanning electron microscopy with an emphasis on the role of bond-coat surface features on local damage mechanisms. An important micromechanism for TBCs with the NiCoCrAlY bond-coat was multiple parallel cracking of the TGO layer that was likely also responsible for lower endurance of these coatings.

Klíčová slova

Thermal barrier coatings; Bond-coat; Plasma spray; Roughness; Oxidation; Thermal cycling

Autoři

SLÁMEČKA, K.; JECH, D.; KLAKURKOVÁ, L.; TKACHENKO, S.; REMEŠOVÁ, M.; GEJDOŠ, P.; ČELKO, L.

Vydáno

19. 2. 2020

Nakladatel

Elsevier

Místo

Nizozemsko

ISBN

978-80-214-5760-7

Kniha

MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE

ISSN

2452-3216

Periodikum

Procedia Structural Integrity

Ročník

23

Číslo

1

Stát

Italská republika

Strany od

439

Strany do

444

Strany počet

6

URL

https://www.sciencedirect.com/science/article/pii/S245232162030192X

Plný text v Digitální knihovně

http://hdl.handle.net/11012/193513

BibTex

@inproceedings{BUT163208,
  author="Karel {Slámečka} and David {Jech} and Lenka {Klakurková} and Serhii {Tkachenko} and Michaela {Remešová} and Pavel {Gejdoš} and Ladislav {Čelko}",
  title="Thermal cycling behaviour of plasma-sprayed thermal barrier coatings with pre-oxidized NiCrAlY and NiCoCrAlY bond-coats",
  booktitle="MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE",
  year="2020",
  journal="Procedia Structural Integrity",
  volume="23",
  number="1",
  pages="439--444",
  publisher="Elsevier",
  address="Nizozemsko",
  doi="10.1016/j.prostr.2020.01.126",
  isbn="978-80-214-5760-7",
  issn="2452-3216",
  url="https://www.sciencedirect.com/science/article/pii/S245232162030192X"
}