Publication detail

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

ČÍŽEK, J. CÉNEK, L. 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

Type

conference paper

Language

English

Original Abstract

lectron 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

EB technology; cold gas dynamic spray; localized remelting; heterogeneous structure nanoindentation

Authors

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

Released

25. 7. 2016

Publisher

Politecnico di Milano

Location

Milan, Itálie

ISBN

9782123456803

Book

Proceedings of SMT30

Pages from

1

Pages to

5

Pages count

5

URL

http://smt30.org/

BibTex

@inproceedings{BUT132303,
  author="Jan {Čížek} and Lukáš {Cének} 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",
  booktitle="Proceedings of SMT30",
  year="2016",
  pages="1--5",
  publisher="Politecnico di Milano",
  address="Milan, Itálie",
  isbn="9782123456803",
  url="http://smt30.org/"
}