Publication detail

The Role of Different Atmospheric Plasma Spray Parameters on Microstructure of Abradable AlSi-polyester Coatings

JECH, D. ČELKO, L. KOMAROV, P. ZIEGELHEIM, J. ČESÁNEK, Z. SHUBERT, J.

Original Title

The Role of Different Atmospheric Plasma Spray Parameters on Microstructure of Abradable AlSi-polyester Coatings

Type

conference paper

Language

English

Original Abstract

One of the approaches to increase the thermic efficiency of aerospace engines is the application of abradable coatings enabling minimization and control of the clearance between the stator and the rotating blades tips. The main purpose of this contribution is to define the role of different technological parameters utilized for atmospheric plasma spraying of AlSi-polyester coating on its resulting microstructure. Deposition of abradable coatings on the real engine parts is mostly dependent on spraying stand-off distance and on spraying angle. These two parameters influence not only the coating microstructure but also the deposition efficiency itself, which is directly connected with economical aspects of the coating production. The set of experimental samples with atmospheric plasma sprayed Ni-based bond coat and two in chemical composition same initial powders delivered from different powder manufacturers were used to spray thick AlSipolymer top coats with different spraying stand-off distances and angles. Subsequently some of the samples were also heat treated to burn-out the polymer phase from the coating microstructure. The Rockwell HR15Y hardness was measured on all samples and the microstructure and coating thickness were evaluated by means of light microscopy and image analysis methods.

Keywords

Atmospheric plasma spraying; AlSi-polyester; Microstructure; Hardness; Thickness

Authors

JECH, D.; ČELKO, L.; KOMAROV, P.; ZIEGELHEIM, J.; ČESÁNEK, Z.; SHUBERT, J.

Released

27. 11. 2017

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

978-80-01-06150-3

Book

Přínos metalografie pro řešení výrobních problémů

Edition

14

ISBN

1662-9779

Periodical

Solid State Phenomena

Year of study

270

State

Swiss Confederation

Pages from

224

Pages to

229

Pages count

6

BibTex

@inproceedings{BUT138783,
  author="JECH, D. and ČELKO, L. and KOMAROV, P. and ZIEGELHEIM, J. and ČESÁNEK, Z. and SHUBERT, J.",
  title="The Role of Different Atmospheric Plasma Spray Parameters on Microstructure of Abradable AlSi-polyester Coatings",
  booktitle="Přínos metalografie pro řešení výrobních problémů",
  year="2017",
  series="14",
  journal="Solid State Phenomena",
  volume="270",
  pages="224--229",
  publisher="Trans Tech Publications",
  address="Switzerland",
  doi="10.4028/www.scientific.net/SSP.270.224",
  isbn="978-80-01-06150-3",
  issn="1662-9779"
}