Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111358
Title: Cavitation Resistance of WC-10Co4Cr and WC-20CrC-7Ni HVAF Coatings
Authors: Korobov, Y.
Alwan, H.
Soboleva, N.
Makarov, A.
Lezhnin, N.
Shumyakov, V.
Antonov, M.
Deviatiarov, M.
Issue Date: 2022
Publisher: Springer
Springer Science and Business Media LLC
Citation: Cavitation Resistance of WC-10Co4Cr and WC-20CrC-7Ni HVAF Coatings / Y. Korobov, H. Alwan, N. Soboleva et al. — DOI 10.30759/1728-9718-2021-3(72)-91-98 // Journal of Thermal Spray Technology. — 2022. — Vol. 31. — Iss. 1-2. — P. 234-246.
Abstract: Machines operating in aqueous environments may be subjected to cavitation damage during operation. This study aims to evaluate the cavitation resistance of WC-10Co4Cr and WC-20CrC-7Ni coatings under cavitation erosion conditions with additional electrochemical effects. The coatings were deposited on AISI 1040 steel substrates using a high velocity air fuel thermal spray process. The microstructure of the coatings was observed by a scanning electron microscope, while their phase composition was analyzed using an energy-dispersive microanalysis system. In addition, the microhardness of the coatings and substrate was measured, and the surface topography of the eroded surface layers was observed using a 3D optical profilometer. The results revealed that the cavitation resistance of the WC-20CrC-7Ni coatings was better than that of the WC-10Co4Cr coatings. The observation of the structure and surface topography made it possible to identity the reasons for the differences between the cavitation resistance of both coatings: The WC-20CrC-7Ni coatings had a finer grain structure, lower pore density, and lower as-sprayed surface roughness. These differences, along with the presence of a high Cr and Ni content in the feedstock powder, that increased the coating corrosion resistance, contributed to improving the cavitation resistance and reducing the material loss of the WC-20CrC-7Ni coatings. © 2021, ASM International.
Keywords: CAVITATION EROSION RESISTANCE
HVAF COATINGS
MICROSTRUCTURE
SURFACE TOPOGRAPHY
ULTRASONIC VIBRATION METHOD
WC-10CO4CR
WC-20CRC-7NI
AIR
CAVITATION
CORROSION RESISTANCE
POWDER COATINGS
SCANNING ELECTRON MICROSCOPY
SPRAYED COATINGS
SUBSTRATES
SURFACE ROUGHNESS
TOPOGRAPHY
AQUEOUS ENVIRONMENT
CAVITATION DAMAGE
CAVITATION RESISTANCE
ELECTROCHEMICAL EFFECTS
ENERGY DISPERSIVE MICROANALYSIS
HIGH VELOCITY AIR FUELS
OPTICAL PROFILOMETER
THERMAL SPRAY PROCESS
CORROSION RESISTANT COATINGS
URI: http://hdl.handle.net/10995/111358
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85112379958
ISSN: 1059-9630
DOI: 10.30759/1728-9718-2021-3(72)-91-98
metadata.dc.description.sponsorship: The work was completed within state assignments from FASO Russia for IMP UB RAS on the subjects No. AAAA-A18-118020190116-6, № AAAA-A19-119070490049-8 and for IES UB RAS on the subject No. AAAA-A18-118020790147-4. The present study was supported by project № IRA-SME-66316 cladHEA+ (M-ERA.NET Call 2019-II) and M-ERA.Net ETAG18012 DuraCer. The experimental research was carried out using the equipment of the Plastometriya Collective Use Center of IES UB RAS.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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