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.
English title
Potential of New-Generation Electron Beam Technology in Interface Modification of Cold and HVOF Sprayed MCrAlY Bond Coats
Type
conference paper
Language
en
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).
English 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 in English
EB technology; cold gas dynamic spray; localized remelting; heterogeneous structure nanoindentation
Released
25.07.2016
Publisher
Politecnico di Milano
Location
Milan, Itálie
ISBN
9782123456803
Book
Proceedings of SMT30
Pages from–to
1–5
Pages count
5
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",
month="July",
pages="1--5",
publisher="Politecnico di Milano",
address="Milan, Itálie",
isbn="9782123456803"
}