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Comparative analysis of microstructure and selected properties of WC-Co-Cr coatings sprayed by high-velocity oxy fuel on S235 and AZ31 substrates Cover

Comparative analysis of microstructure and selected properties of WC-Co-Cr coatings sprayed by high-velocity oxy fuel on S235 and AZ31 substrates

Materials Science-Poland
Volume 42 (2024): Issue 1 (March 2024)
By: Ewa Jonda,  Hanna Myalska-Głowacka,  Leszek Łatka,  Krzysztof Szymański and  Magłorzata Dziekońska  
Open Access
|May 2024

Figures & Tables

Fig. 1.

Morphology of the initial feedstock powder: (a) standard view, (b) detailed view

Fig. 2.

Scheme of the HVOF deposition method

Fig. 3.

The surface topography of sprayed coatings: (a) MBS, (b) SBS

Fig. 4.

The SEM images of the coatings’ cross-sections at low magnification (500x): (a) MBS and (b) SBS

Fig. 5.

The SEM images of the coatings’ cross-sections at high magnification (10,000x): (a) MBS and (b) SBS

Fig. 6.

XRD patterns for HVOF-sprayed coatings

Fig. 7.

Results of crystallite size calculations for WC and W2C phases in the sprayed coatings

HVOF process parameters and sample code

SampleMedium feed rateSpray distance mm
Kerosene l/minOxygen l/minNitrogen l/minPowder g/min
SBS10.3809501270300
MBS20.435900 360

Results for surface roughness of the as-sprayed coatings

SampleRaRpRvRz
SBS3.36 ± 0.2310.20 ± 2.147.95 ± 1.4818.10 ± 3.15
MBS4.28 ± 0.2411.84 ± 2.479.92 ± 1.8321.77 ± 3.51

Results for CRI calculations

SampleCRI value
SBS0.915
MBS0.928

The IIT results for carbide particles and metallic matrix in sprayed coatings

SampleHIT (WC) GPaEIT (WC) GPaHIT (Co-Cr) GPaEIT (Co-Cr) GPa
SBS29.14 ± 1.91622 ± 176.52 ± 0.47192 ± 9
MBS28.65 ± 1.94624 ± 186.46 ± 0.42193 ± 8
DOI: https://doi.org/10.2478/msp-2024-0002 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 32 - 41
Submitted on: Feb 13, 2024
|
Accepted on: Mar 17, 2024
|
Published on: May 8, 2024
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
structural steel,
magnesium alloy,
cermet coatings,
HVOF,
mechanical properties,
microstructure,
phase analysis
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2024 Ewa Jonda, Hanna Myalska-Głowacka, Leszek Łatka, Krzysztof Szymański, Magłorzata Dziekońska, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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