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EVALUATION OF MECHANICAL AND TRIBOLOGICAL PROPERTIES OF HARDMETAL COATINGS DEPOSITED BY HVOF THERMAL SPRAYING METHOD

1 TARANDA Tomáš
Co-authors:
2 DLOUHÁ Žaneta 2 NAĎOVÁ Jana 2 HOUDKOVÁ Šárka
Institutions:
1 ZČU – University of West Bohemia, Pilsen, Czech Republic, EU, taranda@students.zcu.cz
2 Research and Testing Institute Pilsen, Pilsen, Czech Republic, EU, houdkova@vzuplzen.cz
Conference:
32nd International Conference on Metallurgy and Materials, Orea Congress Hotel Brno, Czech Republic, EU, May 17 - 19, 2023
Proceedings:
Proceedings 32nd International Conference on Metallurgy and Materials
Pages:
517-522
ISBN:
978-80-88365-12-9
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2023.4722
Published:
8th January 2024
Proceedings of the conference were published in Web of Science.
Metrics:
243 views / 173 downloads
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Abstract

This article deals with the evaluation of the microstructure and tribological and mechanical properties of hardmetal coatings based on WC and CrC, which were applied to the base material S235JR by the HVOF thermal spraying technology. Experiments such as microhardness HV0.3, superficial hardness HR15N, adhesion determination, abrasive wear and reciprocating sliding wear test were performed to compare the properties of the coatings and see how they differ depending on the selected additive material. Most of the tested coatings generally had high hardnesses, high wear resistance and reduced coefficient of friction, but were not significantly different. The only exception was the coating with the chemical composition 70(WC/Cr3C2)-21Ni9Cu, where the properties were significantly worse.

Keywords: Thermal spraying, hardmetals, WC, Cr3C2, HVOF, wear, properties

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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