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

Paper in proceedings (conference paper)

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

2017

Released

01.04.2014

Publisher

Trans Tech Publication

Location

Switzerland

ISBN

978-3-03835-072-9

Book

Metallography XV

ISBN

0255-5476

Periodical

Materials Science Forum

Volume

782

Number

1

State

Swiss Confederation

Pages from

567

Pages to

572

Pages count

7

URL

http://www.scientific.net/MSF.782.567

BibTex

@inproceedings{BUT106854,
  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",
  booktitle="Metallography XV",
  year="2014",
  journal="Materials Science Forum",
  volume="782",
  number="1",
  pages="567--572",
  publisher="Trans Tech Publication",
  address="Switzerland",
  doi="10.4028/www.scientific.net/MSF.782.567",
  isbn="978-3-03835-072-9",
  issn="0255-5476",
  url="http://www.scientific.net/MSF.782.567"
}