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Influence of ball material on the resulting fatigue life of thermal sprayed HVOF coatings in dynamic impact testing
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SYSNO ASEP 0583061 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Influence of ball material on the resulting fatigue life of thermal sprayed HVOF coatings in dynamic impact testing Author(s) Duliškovič, J. (CZ)
Daniel, Josef (UPT-D) RID, ORCID, SAI
Houdková, Š. (CZ)Source Title METAL 2023. 32nd International Conference on Metallurgy and Materials. Conference Proceedings. - Ostrava : TANGER, 2024 - ISSN 2694-9296 - ISBN 978-80-88365-12-9 Pages s. 439-444 Number of pages 6 s. Publication form Online - E Action METAL 2023. International Conference on Metallurgy and Materials /32./ Event date 17.05.2023 - 19.05.2023 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords dynamic impact test ; HVOF ; Cr3C2-NiCr ; fatigue R&D Projects TH75020003 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Institutional support UPT-D - RVO:68081731 DOI 10.37904/metal.2023.4716 Annotation Dynamic impact wear, i.e. contact between two components in the presence of high cyclic local loads, is a challenging failure mode that occurs in many mechanical applications. Many previous studies have confirmed that dynamic impact testing is suitable for evaluating the contact fatigue of thermal sprayed coatings. However, the effect of the test parameters on the resulting lifetime is unclear. The aim of this study describes the effect of the ball material used in the dynamic impact test on the resulting fatigue life of the HVOF thermal sprayed coating. Three test balls made of WC/Co alloy, Si3N4 silicon nitride and 440 C steel were chosen for this study. Dynamic impaction testing was carried out on the Cr3C2-NiCr coating, which was sprayed by HVOF on a 1.2376 high-speed steel substrate. The impact lifetime was described by the number of critical impacts, i.e. the number of impacts before coating fatigue occurs. Furthermore, the depth and volume of impact craters were measured. Using scanning electron microscopy (SEM), the surface of the impacts as well as the microstructure of the coating on the cross-section in the region of the impacts were observed. Furthermore, the mechanism of crack propagation in the coating and the microstructure of the indentor were investigated. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2025 Electronic address https://www.confer.cz/metal/2023/4716-influence-of-ball-material-on-the-resulting-fatigue-life-of-thermal-sprayed-hvof-coatings-in-dynamic-impact-testing
Number of the records: 1