Impact Wear of the Protective Cr3C2-Based HVOF-Sprayed Coatings
1
Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 612 64 Brno, Czech Republic
2
Research and Testing Institute in Plzeň, Tylova 46, 301 00 Plzeň, Czech Republic
3
Regional Technological Institute, University of West Bohemia, 306 14 Plzeň, Czech Republic
*
Author to whom correspondence should be addressed.
Materials 2020, 13(9), 2132; https://doi.org/10.3390/ma13092132
Received: 2 April 2020
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Revised: 30 April 2020
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Accepted: 1 May 2020
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Published: 4 May 2020
(This article belongs to the Special Issue Advances in Thermal Spray Technology)
High velocity oxygen-fuel (HVOF) prepared CrC-based hardmetal coatings are generally known for their superior wear, corrosion, and oxidation resistance. These properties make this coating attractive for application in industry. However, under some loading conditions and in aggressive environments, the most commonly used NiCr matrix is not sufficient. The study is focused on the evaluation of dynamic impact wear of the HVOF-sprayed Cr3C2-25%NiCr and Cr3C2-50%NiCrMoNb coatings. Both coatings were tested by an impact tester with a wide range of impact loads. The Wohler-like dependence was determined for both coatings’ materials. It was shown that, due to the different microstructure and higher amount of tough matrix, the impact lifetime of the Cr3C2-50%NiCrMoNb coating was higher than the lifetime of the Cr3C2-25%NiCr coating. Differences in the behavior of the coatings were the most pronounced at high impact loads.
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Keywords:
HVOF; hardmetal; chromium carbide; dynamic impact test; impact wear; thermal spraying
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MDPI and ACS Style
Daniel, J.; Grossman, J.; Houdková, Š.; Bystrianský, M. Impact Wear of the Protective Cr3C2-Based HVOF-Sprayed Coatings. Materials 2020, 13, 2132. https://doi.org/10.3390/ma13092132
AMA Style
Daniel J, Grossman J, Houdková Š, Bystrianský M. Impact Wear of the Protective Cr3C2-Based HVOF-Sprayed Coatings. Materials. 2020; 13(9):2132. https://doi.org/10.3390/ma13092132
Chicago/Turabian StyleDaniel, Josef, Jan Grossman, Šárka Houdková, and Martin Bystrianský. 2020. "Impact Wear of the Protective Cr3C2-Based HVOF-Sprayed Coatings" Materials 13, no. 9: 2132. https://doi.org/10.3390/ma13092132
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