Effect of double electron beam remelting on microstructure of HVOF and CGDS bond coat
Paper in proceeding, 2017

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.

High velocity oxygen-fuel

Cold gas dynamic spray

CoNiCrAlY coatings

Electron beam remelting

Author

P.G. Krajňáková

Brno University of Technology

I. Dlouhý

Brno University of Technology

J. Cizek

Brno University of Technology

J. Čupera

Brno University of Technology

Ruslan Shvab

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Materials Science Forum

0255-5476 (ISSN) 16629752 (eISSN)

Vol. 891 MSF 574-578
9783035710182 (ISBN)

Subject Categories

Materials Engineering

Manufacturing, Surface and Joining Technology

Areas of Advance

Production

Materials Science

DOI

10.4028/www.scientific.net/MSF.891.574

ISBN

9783035710182

More information

Latest update

11/14/2024