Publication detail

Microstructure modification of CGDS and HVOF sprayed CoNiCrAlY bond coat remelted by electron beam

GAVENDOVÁ, P. ČÍŽEK, J. ČUPERA, J. HASEGAWA, M. DLOUHÝ, I.

Original Title

Microstructure modification of CGDS and HVOF sprayed CoNiCrAlY bond coat remelted by electron beam

English Title

Microstructure modification of CGDS and HVOF sprayed CoNiCrAlY bond coat remelted by electron beam

Type

journal article in Web of Science

Language

en

Original Abstract

In the present work two techniques are combined to optimise bond coat properties before TBC application, the cold gas dynamic spraying (CGDS) and electron beam remelting (EB). Results of the work focused on comparison of HVOF and CGDS CoNiCrAlY bond coats are firstly presented. Than the effect of the electron beam remelting of the CoNiCrAlY coating manufactured by HVOF and CGDS deposition techniques is deeply investigated. Scanning electron microscopy, light microscopy, and, in addition, X-Ray diffraction techniques were performed to characterize the phase modification and microstructure composition changes before and after the treatment. The microstructural and phase analyses have been supported by microhardness and nanohardness investigation and other necessary supporting techniques.

English abstract

In the present work two techniques are combined to optimise bond coat properties before TBC application, the cold gas dynamic spraying (CGDS) and electron beam remelting (EB). Results of the work focused on comparison of HVOF and CGDS CoNiCrAlY bond coats are firstly presented. Than the effect of the electron beam remelting of the CoNiCrAlY coating manufactured by HVOF and CGDS deposition techniques is deeply investigated. Scanning electron microscopy, light microscopy, and, in addition, X-Ray diffraction techniques were performed to characterize the phase modification and microstructure composition changes before and after the treatment. The microstructural and phase analyses have been supported by microhardness and nanohardness investigation and other necessary supporting techniques.

Keywords

CoNiCrAlY, bond coat, thermal spray, electron beam remelting, thermal barrier coating

Released

06.05.2016

Publisher

www.elsevier.com

Location

Amsterdam

ISBN

2211-8128

Periodical

Procedia Materials Science

Number

12

State

NL

Pages from

89

Pages to

94

Pages count

6

URL

Documents

BibTex


@article{BUT125982,
  author="Petra {Krajňáková} and Jan {Čížek} and Jan {Čupera} and Makoto {Hasegawa} and Ivo {Dlouhý}",
  title="Microstructure modification of CGDS and HVOF sprayed CoNiCrAlY bond coat remelted by electron beam",
  annote="In the present work two techniques are combined to optimise bond coat properties before TBC application, the cold gas dynamic spraying (CGDS) and electron beam remelting (EB). Results of the work focused on comparison of HVOF and CGDS CoNiCrAlY bond coats are firstly presented. Than the effect of the electron beam remelting of the CoNiCrAlY coating manufactured by HVOF and CGDS deposition techniques is deeply investigated. Scanning electron microscopy, light microscopy, and, in addition, X-Ray diffraction techniques were performed to characterize the phase modification and microstructure composition changes before and after the treatment. The microstructural and phase analyses have been supported by microhardness and nanohardness investigation and other necessary supporting techniques.",
  address="www.elsevier.com",
  chapter="125982",
  doi="10.1016/j.mspro.2016.03.016",
  howpublished="online",
  institution="www.elsevier.com",
  number="12",
  year="2016",
  month="may",
  pages="89--94",
  publisher="www.elsevier.com",
  type="journal article in Web of Science"
}