Effect of double electron beam remelting on microstructure of HVOF and CGDS bond coat
Paper i 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

Electron beam remelting

CoNiCrAlY coatings

Författare

P.G. Krajňáková

Vysoke uceni technicke v Brne, Fakulta strojniho inzenurstvi

I. Dlouhý

Vysoke uceni technicke v Brne, Fakulta strojniho inzenurstvi

J. Cizek

Vysoke uceni technicke v Brne, Fakulta strojniho inzenurstvi

J. Čupera

Vysoke uceni technicke v Brne, Fakulta strojniho inzenurstvi

Ruslan Shvab

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

Materials Science Forum

0255-5476 (ISSN)

Vol. 891 574-578

Ämneskategorier

Materialteknik

Bearbetnings-, yt- och fogningsteknik

Styrkeområden

Produktion

Materialvetenskap

DOI

10.4028/www.scientific.net/MSF.891.574

ISBN

9783035710182