Publication detail

Effect of Double Electron beam Remelting on Microstructure of HVOF and CGDS Bond Coat

KRAJŇÁKOVÁ, P. DLOUHÝ, I. ČÍŽEK, J. ČUPERA, J. SHVAB, R.

Original Title

Effect of Double Electron beam Remelting on Microstructure of HVOF and CGDS Bond Coat

English Title

Effect of Double Electron beam Remelting on Microstructure of HVOF and CGDS Bond Coat

Type

conference paper

Language

en

Original Abstract

This work focuses to investigate the influence of the parameters used in electron beam (EB) remelting including the effect of double remelting of CoNiCrAlY coatings fabricated on Nickel based super alloy substrates by using the high velocity oxygen-fuel (HVOF) and cold gas dynamic spraying (CGDS) methods. The microstructure of as sprayed and remelted coatings were investigated by scanning electron microscopy and the phase analysis by X-ray diffraction (XRD). The results obtained show that there are advantages at using the pulsed EB surface modification technique. Double EB treatment provides a smooth surface and low porosity level and at last but not least this study demonstrate that low-temperature processing of CoNiCrAlY bond coat represents an interesting and promising alternative for their manufacturing.

English abstract

This work focuses to investigate the influence of the parameters used in electron beam (EB) remelting including the effect of double remelting of CoNiCrAlY coatings fabricated on Nickel based super alloy substrates by using the high velocity oxygen-fuel (HVOF) and cold gas dynamic spraying (CGDS) methods. The microstructure of as sprayed and remelted coatings were investigated by scanning electron microscopy and the phase analysis by X-ray diffraction (XRD). The results obtained show that there are advantages at using the pulsed EB surface modification technique. Double EB treatment provides a smooth surface and low porosity level and at last but not least this study demonstrate that low-temperature processing of CoNiCrAlY bond coat represents an interesting and promising alternative for their manufacturing.

Keywords

CoNiCrAlY coatings, High velocity oxygen-fuel, Cold gas dynamic spray, Electron beam remelting

Released

24.04.2017

Publisher

Trans tech Publications Ltd

Location

Zurich, Switzerland

ISBN

978-3-0357-1018-2

Book

Metallography XVI

Pages from

574

Pages to

578

Pages count

5

Documents

BibTex


@inproceedings{BUT137602,
  author="Petra {Krajňáková} and Ivo {Dlouhý} and Jan {Čížek} and Jan {Čupera} and Ruslan {Shvab}",
  title="Effect of Double Electron beam Remelting on Microstructure of HVOF and CGDS Bond Coat",
  annote="This work focuses to investigate the influence of the parameters used in electron beam (EB) remelting including the effect of double remelting of CoNiCrAlY coatings fabricated on Nickel based super alloy substrates by using the high velocity oxygen-fuel (HVOF) and cold gas dynamic spraying (CGDS) methods. The microstructure of as sprayed and remelted coatings were investigated by scanning electron microscopy and the phase analysis by X-ray diffraction (XRD). The results obtained show that there are advantages at using the pulsed EB surface modification technique. Double EB treatment provides a smooth surface and low porosity level and at last but not least this study demonstrate that low-temperature processing of CoNiCrAlY bond coat represents an interesting and promising alternative for their manufacturing.",
  address="Trans tech Publications Ltd",
  booktitle="Metallography XVI",
  chapter="137602",
  doi="10.4028/www.scientific.net/MSF.891.574",
  howpublished="print",
  institution="Trans tech Publications Ltd",
  year="2017",
  month="april",
  pages="574--578",
  publisher="Trans tech Publications Ltd",
  type="conference paper"
}