Publication detail

Evaluation of Microstructure, Phase Composition and Hardness of Alternative Abradable Ceramic Coating Systems Produced by Means of Atmospheric Plasma Spraying

JECH, D. REMEŠOVÁ, M. KOMAROV, P. TKACHENKO, S. ČESÁNEK, Z. SCHUBERT, J. HOUDKOVÁ, Š. ČELKO, L.

Original Title

Evaluation of Microstructure, Phase Composition and Hardness of Alternative Abradable Ceramic Coating Systems Produced by Means of Atmospheric Plasma Spraying

Type

conference paper

Language

English

Original Abstract

Only a few types of commercially available high temperature ceramic abradable coatings are presented on the market and most of them consist of partially stabilized yttria-zirconia with polymer porosity former agent and/or hBN solid lubricant. The basic demand placed on abradable coatings includes the balance between hardness and erosion resistance. The contribution focuses on the description of microstructure, phase composition and hardness of alternative atmospheric plasma sprayed ceramic abradable coatings deposited from four different experimental powder mixtures: (i) commercial yttria-zirconia + 5 wt. % of experimental BaF2/CaF2, (ii) commercial yttria stabilized zirconia + 10 wt. % of experimental BaF2/CaF2, (iii) R&D powder SrxTiOy and (iv) R&D powder SrxTiOy + 5 wt. % of polyester. The abradable coating systems were of ~ 150 μm thick CoNiCrAlY bond coat and of ~ 800-1000 μm thick ceramic top coat. The microstructure and phase composition of all atmospheric plasma sprayed coating systems were evaluated by the means of scanning electron microscopy and X-ray diffraction techniques. To estimate coatings basic parameters the Rockwell hardness HR15Y was determinated.

Keywords

Abradable coatings; Strontium titanate; Barium-Calcium Fluoride; Atmospheric plasma spraying; Microstructure

Authors

JECH, D.; REMEŠOVÁ, M.; KOMAROV, P.; TKACHENKO, S.; ČESÁNEK, Z.; SCHUBERT, J.; HOUDKOVÁ, Š.; ČELKO, L.

Released

16. 8. 2019

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

978-3-0357-1550-7

Book

Binders, Materials and Technologies in Modern Construction V

ISBN

1662-9779

Periodical

Solid State Phenomena

Year of study

296

State

Swiss Confederation

Pages from

161

Pages to

166

Pages count

6

BibTex

@inproceedings{BUT157884,
  author="David {Jech} and Michaela {Remešová} and Pavel {Komarov} and Serhii {Tkachenko} and Zdeněk {Česánek} and Jan {Schubert} and Šárka {Houdková} and Ladislav {Čelko}",
  title="Evaluation of Microstructure, Phase Composition and Hardness of Alternative Abradable Ceramic Coating Systems Produced by Means of Atmospheric Plasma Spraying",
  booktitle="Binders, Materials and Technologies in Modern Construction V",
  year="2019",
  journal="Solid State Phenomena",
  volume="296",
  pages="161--166",
  publisher="Trans Tech Publications",
  address="Switzerland",
  doi="10.4028/www.scientific.net/SSP.296.161",
  isbn="978-3-0357-1550-7",
  issn="1662-9779"
}