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Influence of processing conditions on the microstructure and sliding wear of a promising Fe-based coating deposited by HVAF
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SYSNO ASEP 0542793 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Influence of processing conditions on the microstructure and sliding wear of a promising Fe-based coating deposited by HVAF Author(s) Mahade, S. (SE)
Aranke, O. (SE)
Björklund, S. (SE)
Dizdar, S. (SE)
Awe, S. (SE)
Mušálek, Radek (UFP-V) RID, ORCID
Lukáč, František (UFP-V) ORCID
Joshi, S. (SE)Number of authors 8 Article number 126953 Source Title Surface and Coatings Technology. - : Elsevier - ISSN 0257-8972
Roč. 409, March (2021)Number of pages 17 s. Language eng - English Country CH - Switzerland Keywords Ball-on-disc test ; Friction, wear, FeSP586 ; High velocity air fuel (HVAF) ; High velocity oxy fuel (HVOF) Subject RIV JG - Metallurgy OECD category Materials engineering Method of publishing Limited access Institutional support UFP-V - RVO:61389021 UT WOS 000654045600079 EID SCOPUS 85100486733 DOI 10.1016/j.surfcoat.2021.126953 Annotation Thermal spray is a versatile and cost-effective process to deposit wear and corrosion resistant coatings. In this work, a relatively new ‘Fe-based’ chemistry comprising boride and carbides, is explored as a ‘greener’ alternative to the relatively expensive and carcinogenic Co-based coatings to mitigate wear. The emergent thermal spray process of high-velocity air-fuel (HVAF) spraying was chosen to deposit the Fe-based coatings, with the high-velocity oxy-fuel (HVOF) also being employed solely for the purpose of preliminary comparison. Detailed characterization of the HVOF and HVAF sprayed Fe-based coatings was carried out. Microstructure, porosity, hardness and phase analysis results demonstrate the influence of processing conditions, where specific spray conditions yielded minimal undeformed particulates content, high hardness, low porosity and feedstock phase retention. Differences in microstructural features of the as-deposited coatings in relation to their processing conditions are discussed in detail. The coatings were subjected to ball-on-disc tribometry tests at different load conditions and their friction and wear performance were evaluated. The coefficient of friction results of investigated coatings concurred with their respective microstructural features. Post-mortem of the worn coating surface, the mating alumina ball surface and wear debris was performed using SEM/EDS analysis to understand the associated wear mechanisms and material transfer. This work provides new insights on identifying appropriate HVAF processing conditions to achieve acceptable microstructural features and phases in Fe-based coatings for improved wear performance. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2022 Electronic address https://www.sciencedirect.com/science/article/pii/S0257897221001262?via%3Dihub
Number of the records: 1