Publication detail

The Role of Technological Input Parameters on a Quality of Plasma Sprayed Thermal Barrier Coatings

KLAKURKOVÁ, L. ČELKO, L. SLÁMEČKA, K. DVOŘÁČEK, E. PODRÁBSKÝ, T. ŠVEJCAR, J.

Original Title

The Role of Technological Input Parameters on a Quality of Plasma Sprayed Thermal Barrier Coatings

Type

abstract

Language

English

Original Abstract

The thermal barrier coatings uses the approach of functional gradient coatings, where combination of ceramic and metallic coatings are applied to reduce the temperature height and also to increase oxidation and corrosion resistance of the substrate alloys on which are deposited. Thermal barrier coatings are most frequently produced from the top ceramic coating based on YSZ (ZrO2+Y2O3) and metallic bond coating based on M-CrAlY, where M means Ni, Co, Fe or their appropriate combination. Their formation is usually provided by means of electron beam physical vapour deposition (EB-PVD) or vacuum, low pressure or atmospheric plasma spraying techniques. Despite the requirements on the product shape simplicity, the air plasma spraying offers high productivity, sufficient quality and disproportionate lower production costs in comparison with the other mentioned technologies. The contribution deals with the influence of input technological parameters (feeding rates of powders, plasma and carrier gas pressures, etc.) on a resulting quality of thermal barrier coatings, where high density of both metallic and ceramic coatings with minimum of porosity plays a critical role. The changes in microstructure of thermal barrier coatings after the spraying were evaluated by means of porosimetry, scanning electron microscopy and image analysis methods.

Keywords

plasma spray, termal barrier coatins, technological parameters

Authors

KLAKURKOVÁ, L.; ČELKO, L.; SLÁMEČKA, K.; DVOŘÁČEK, E.; PODRÁBSKÝ, T.; ŠVEJCAR, J.

Released

3. 9. 2012

Publisher

Materials Research Society of Serbia

Location

Belgrade, Serbia

Pages from

83

Pages to

83

Pages count

1

BibTex

@misc{BUT98855,
  author="Lenka {Klakurková} and Ladislav {Čelko} and Karel {Slámečka} and Emil {Dvořáček} and Tomáš {Podrábský} and Jiří {Švejcar}",
  title="The Role of Technological Input Parameters on a Quality of Plasma Sprayed Thermal Barrier Coatings",
  booktitle="YUCOMAT 2012, The Book of Abstracts",
  year="2012",
  edition="14",
  pages="83--83",
  publisher="Materials Research Society of Serbia",
  address="Belgrade, Serbia",
  note="abstract"
}