Detail publikačního výsledku

Influence of multiple electron-beam remeltings on the characteristics of HVOF and CGDS sprayed conicraly coatings

KRAJŇÁKOVÁ, P.; DE ALMEIDA GOUVÊA, L.; ČUPERA, J.; JAN, V.; DLOUHÝ, I.; SPOTZ, Z.

Originální název

Influence of multiple electron-beam remeltings on the characteristics of HVOF and CGDS sprayed conicraly coatings

Anglický název

Influence of multiple electron-beam remeltings on the characteristics of HVOF and CGDS sprayed conicraly coatings

Druh

Článek WoS

Originální abstrakt

Nanostructured CoNiCrAlY bond coatings were deposited onto a Ni-based alloy (Inconel 718) by both HVOF and CGDS spraying techniques. Subsequently, the deposits were remelted by an electron beam up to depth of about 100 μm, which resulted in the removal of defects on the substrate to the bond coat interface. This paper examines the influence of the parameters used for EB remelting, including multiple remelting on the microstructural changes, phase modification and the final state of the coatings. The amount of porosity in the coatings and the surface roughness has been evaluated. Scanning electron microscopy and X-ray diffraction were performed in order to characterize the phase modification before and after the applied treatment. The results indicated that multiple remelting improved the coating in terms of porosity, surface roughness decrease, mechanical strength and chemical homogeneity. This study also demonstrates that the CGDS deposition represents a promising alternative for CoNiCrAlY bond coat manufacturing.

Anglický abstrakt

Nanostructured CoNiCrAlY bond coatings were deposited onto a Ni-based alloy (Inconel 718) by both HVOF and CGDS spraying techniques. Subsequently, the deposits were remelted by an electron beam up to depth of about 100 μm, which resulted in the removal of defects on the substrate to the bond coat interface. This paper examines the influence of the parameters used for EB remelting, including multiple remelting on the microstructural changes, phase modification and the final state of the coatings. The amount of porosity in the coatings and the surface roughness has been evaluated. Scanning electron microscopy and X-ray diffraction were performed in order to characterize the phase modification before and after the applied treatment. The results indicated that multiple remelting improved the coating in terms of porosity, surface roughness decrease, mechanical strength and chemical homogeneity. This study also demonstrates that the CGDS deposition represents a promising alternative for CoNiCrAlY bond coat manufacturing.

Klíčová slova

bond coat, CoNiCrAlY, cold gas dynamic spraying, HVOF spraying, EB remelting

Klíčová slova v angličtině

bond coat, CoNiCrAlY, cold gas dynamic spraying, HVOF spraying, EB remelting

Autoři

KRAJŇÁKOVÁ, P.; DE ALMEIDA GOUVÊA, L.; ČUPERA, J.; JAN, V.; DLOUHÝ, I.; SPOTZ, Z.

Rok RIV

2019

Vydáno

28.05.2018

Nakladatel

IMT Ljubljana

Místo

Ljubljana, Slovinsko

ISSN

1580-2949

Periodikum

Materiali in Tehnologije

Svazek

52

Číslo

3

Stát

Slovinská republika

Strany od

289

Strany do

293

Strany počet

5

BibTex

@article{BUT148142,
  author="Petra {Krajňáková} and Larissa {Moravčíková de Almeida Gouvea} and Jan {Čupera} and Vít {Jan} and Ivo {Dlouhý} and Zdeněk {Spotz}",
  title="Influence of multiple electron-beam remeltings on the characteristics of HVOF and CGDS sprayed conicraly coatings",
  journal="Materiali in Tehnologije",
  year="2018",
  volume="52",
  number="3",
  pages="289--293",
  doi="10.17222/mit.2017.092",
  issn="1580-2949"
}