Publication result detail

Critical Weak Points of Atmospheric Plasma Sprayed Thermal Barrier Coatings

JECH, D.; ČELKO, L.; JULIŠ, M.; KLAKURKOVÁ, L.; SLÁMEČKA, K.; OBRTLÍK, K.; ŠVEJCAR, J.

Original Title

Critical Weak Points of Atmospheric Plasma Sprayed Thermal Barrier Coatings

English Title

Critical Weak Points of Atmospheric Plasma Sprayed Thermal Barrier Coatings

Type

Abstract

Original Abstract

The 8 wt. % yttria stabilized zirconia top coat (TC) and the CoNiCrAlY bond coat (BC) were sprayed onto the surface of newly developed fine-grained cast polycrystalline nickel-based superalloy Inconel 713LC by means of atmospheric plasma spraying (APS). As-prepared samples were isothermally exposed at the temperature of 1050 C for 200 hours in an ambient atmosphere. Structural changes in the thermal barrier coatings (TBC) system after thermal exposure were studied by means of scanning electron microscope equipped with an energy dispersive microanalyzer. Critical weak points were identified on both the substrate-bond coat and bond coat-top coat interfaces.

English abstract

The 8 wt. % yttria stabilized zirconia top coat (TC) and the CoNiCrAlY bond coat (BC) were sprayed onto the surface of newly developed fine-grained cast polycrystalline nickel-based superalloy Inconel 713LC by means of atmospheric plasma spraying (APS). As-prepared samples were isothermally exposed at the temperature of 1050 C for 200 hours in an ambient atmosphere. Structural changes in the thermal barrier coatings (TBC) system after thermal exposure were studied by means of scanning electron microscope equipped with an energy dispersive microanalyzer. Critical weak points were identified on both the substrate-bond coat and bond coat-top coat interfaces.

Keywords

Thermal Barrier Coatings, Isothermal exposure, Thermally grown oxide, Superalloy, Electron microscopy

Key words in English

Thermal Barrier Coatings, Isothermal exposure, Thermally grown oxide, Superalloy, Electron microscopy

Authors

JECH, D.; ČELKO, L.; JULIŠ, M.; KLAKURKOVÁ, L.; SLÁMEČKA, K.; OBRTLÍK, K.; ŠVEJCAR, J.

RIV year

2014

Released

24.04.2013

Publisher

Department of Material Science, Faculty of Metallurgy, Technical University of Košice

Location

Slovakia

ISBN

978-80-553-1412-9

Pages from

82

Pages to

82

BibTex

@misc{BUT100912,
  author="David {Jech} and Ladislav {Čelko} and Martin {Juliš} and Lenka {Klakurková} and Karel {Slámečka} and Karel {Obrtlík} and Jiří {Švejcar}",
  title="Critical Weak Points of Atmospheric Plasma Sprayed Thermal Barrier Coatings",
  year="2013",
  pages="82--82",
  publisher="Department of Material Science, Faculty of Metallurgy, Technical University of Košice",
  address="Slovakia",
  doi="10.4028/www.scientific.net/MSF.782.567",
  isbn="978-80-553-1412-9",
  note="Abstract"
}