Publication result detail

Potential of New-Generation Electron Beam Technology in Interface Modification of Cold and HVOF Sprayed MCrAlY Bond Coats

ČÍŽEK, J.; MATĚJKOVÁ, M.; KOUŘIL, J.; ČUPERA, J.; DLOUHÝ, I.

Original Title

Potential of New-Generation Electron Beam Technology in Interface Modification of Cold and HVOF Sprayed MCrAlY Bond Coats

English Title

Potential of New-Generation Electron Beam Technology in Interface Modification of Cold and HVOF Sprayed MCrAlY Bond Coats

Type

WoS Article

Original Abstract

Electron beam (EB) technology treatment was carried out on CoNiCrAlY bond coats deposited on Inconel substrates via cold spray and HVOF techniques in dissimilar thicknesses. Such treatment was aimed with regard to the final materials microstructure, composition, surface roughness and the quality of the coating-substrate interface. Following a multiple-step optimization of the processing parameters (such as beam pattern configuration, accelerating voltage, longitudinal speed, multiple beam incidence), two final EB modifications were carried out on both coating types. It was found that the optimized EB treatment could lead to a significant alteration of the interface from a distinctive divide into smooth chemical and structural transition between the materials, significant decrease in surface roughness and porosity, as well as changes in mechanical properties (increase in Young's modulus and decrease in hardness of the coating).

English abstract

Electron beam (EB) technology treatment was carried out on CoNiCrAlY bond coats deposited on Inconel substrates via cold spray and HVOF techniques in dissimilar thicknesses. Such treatment was aimed with regard to the final materials microstructure, composition, surface roughness and the quality of the coating-substrate interface. Following a multiple-step optimization of the processing parameters (such as beam pattern configuration, accelerating voltage, longitudinal speed, multiple beam incidence), two final EB modifications were carried out on both coating types. It was found that the optimized EB treatment could lead to a significant alteration of the interface from a distinctive divide into smooth chemical and structural transition between the materials, significant decrease in surface roughness and porosity, as well as changes in mechanical properties (increase in Young's modulus and decrease in hardness of the coating).

Keywords

interface treatment; localized melting; CoNiCrAlY; bond coat optimization

Key words in English

interface treatment; localized melting; CoNiCrAlY; bond coat optimization

Authors

ČÍŽEK, J.; MATĚJKOVÁ, M.; KOUŘIL, J.; ČUPERA, J.; DLOUHÝ, I.

RIV year

2017

Released

19.02.2016

Publisher

Hindawi Publishing Corporation

ISBN

1687-8434

Periodical

Advances in Materials Science and Engineering

Volume

N/A

Number

N/A

State

United States of America

Pages from

1

Pages to

6

Pages count

6

URL

http://dx.doi.org/10.1155/2016/9070468

Full text in the Digital Library

http://hdl.handle.net/11012/57061

BibTex

@article{BUT120055,
  author="Jan {Čížek} and Michaela {Matějková} and Jan {Kouřil} and Jan {Čupera} and Ivo {Dlouhý}",
  title="Potential of New-Generation Electron Beam Technology in Interface Modification of Cold and HVOF Sprayed MCrAlY Bond Coats",
  journal="Advances in Materials Science and Engineering",
  year="2016",
  volume="N/A",
  number="N/A",
  pages="1--6",
  doi="10.1155/2016/9070468",
  issn="1687-8434",
  url="http://dx.doi.org/10.1155/2016/9070468"
}

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