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

abstract

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

08.09.2014

Publisher

Vydavatelství VŠB-TU Ostrava

Location

Ostrava

ISBN

978-80-248-3488-7

Book

New Methods of Damage and Failure Analysis of Structural Parts

Edition

VŠB-TU Ostrava

Edition number

1

Pages from

119

Pages to

120

Pages count

2

Documents

BibTex


@misc{BUT120621,
  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="Vydavatelství VŠB-TU Ostrava",
  booktitle="New Methods of Damage and Failure Analysis of Structural Parts",
  chapter="120621",
  edition="VŠB-TU Ostrava",
  howpublished="print",
  institution="Vydavatelství VŠB-TU Ostrava",
  year="2014",
  month="september",
  pages="119--120",
  publisher="Vydavatelství VŠB-TU Ostrava",
  type="abstract"
}