Understanding the influence of high velocity thermal spray techniques on the properties of different anti-wear WC-based coatings

This work analyzes the differences found in hard metal coatings produced by two high velocity thermal spray techniques, namely high velocity oxy-fuel (HVOF) and high velocity air-fuel (HVAF). Additionally, the effect of the metallic matrix and ceramic composition and the original carbide grain size...

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Autores: Garfias Bulnes, Andrea, Albaladejo-Fuentes, Vicente, García Cano, Irene, Dosta Parras, Sergi
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/172433
Acceso en línea:https://hdl.handle.net/2445/172433
Access Level:acceso abierto
Palabra clave:Revestiments
Carburs
Coatings
Carbides
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spelling Understanding the influence of high velocity thermal spray techniques on the properties of different anti-wear WC-based coatingsGarfias Bulnes, AndreaAlbaladejo-Fuentes, VicenteGarcía Cano, IreneDosta Parras, SergiRevestimentsCarbursCoatingsCarbidesThis work analyzes the differences found in hard metal coatings produced by two high velocity thermal spray techniques, namely high velocity oxy-fuel (HVOF) and high velocity air-fuel (HVAF). Additionally, the effect of the metallic matrix and ceramic composition and the original carbide grain size on coating properties is compared to the most studied standard reference material sprayed by HVOF, WC-Co. For this evaluation, the physical properties of the coatings, including feedstock characteristics, porosity, thickness, roughness, hardness, and phase composition were investigated. Several characterization methods were used for this purpose: optical microscopy (OM), scanning electronic microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS), and X-ray Diffraction (XRD), among others. The final performance (abrasive wear and corrosion resistance) shown by the coatings obtained by these two methodologies was also analyzed. Thus, the abrasive wear resistance was analyzed by the rubber-wheel test, while the corrosion resistance was characterized with electrochemical methods. The characterization results obtained clearly showed that the coatings exhibit different microstructures according to feedstock powder characteristics (carbide grain size and/or composition) and the thermal spray process used for its deposition. Thus, the incorporation of WB to the cermet composition led to a high hardness coating, and the complementary hardness and toughness of the WC-Co coatings justify its better abrasion resistance. The presence of Ni on the metal matrix increases the free corrosion potential of the coating to more noble region. However, the WC-Co coatings show a lower corrosion rate and hence a higher protective performance than the rest of the coatings.MDPI2020202020202020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion17 p.application/pdfhttps://hdl.handle.net/2445/172433Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.3390/coatings10121157Coatings, 2020, vol. 10, num. 12, p. 1157https://doi.org/10.3390/coatings10121157cc-by (c) Garfias Bulnes, Andrea et al., 2020http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1724332026-05-29T05:05:01Z
dc.title.none.fl_str_mv Understanding the influence of high velocity thermal spray techniques on the properties of different anti-wear WC-based coatings
title Understanding the influence of high velocity thermal spray techniques on the properties of different anti-wear WC-based coatings
spellingShingle Understanding the influence of high velocity thermal spray techniques on the properties of different anti-wear WC-based coatings
Garfias Bulnes, Andrea
Revestiments
Carburs
Coatings
Carbides
title_short Understanding the influence of high velocity thermal spray techniques on the properties of different anti-wear WC-based coatings
title_full Understanding the influence of high velocity thermal spray techniques on the properties of different anti-wear WC-based coatings
title_fullStr Understanding the influence of high velocity thermal spray techniques on the properties of different anti-wear WC-based coatings
title_full_unstemmed Understanding the influence of high velocity thermal spray techniques on the properties of different anti-wear WC-based coatings
title_sort Understanding the influence of high velocity thermal spray techniques on the properties of different anti-wear WC-based coatings
dc.creator.none.fl_str_mv Garfias Bulnes, Andrea
Albaladejo-Fuentes, Vicente
García Cano, Irene
Dosta Parras, Sergi
author Garfias Bulnes, Andrea
author_facet Garfias Bulnes, Andrea
Albaladejo-Fuentes, Vicente
García Cano, Irene
Dosta Parras, Sergi
author_role author
author2 Albaladejo-Fuentes, Vicente
García Cano, Irene
Dosta Parras, Sergi
author2_role author
author
author
dc.subject.none.fl_str_mv Revestiments
Carburs
Coatings
Carbides
topic Revestiments
Carburs
Coatings
Carbides
description This work analyzes the differences found in hard metal coatings produced by two high velocity thermal spray techniques, namely high velocity oxy-fuel (HVOF) and high velocity air-fuel (HVAF). Additionally, the effect of the metallic matrix and ceramic composition and the original carbide grain size on coating properties is compared to the most studied standard reference material sprayed by HVOF, WC-Co. For this evaluation, the physical properties of the coatings, including feedstock characteristics, porosity, thickness, roughness, hardness, and phase composition were investigated. Several characterization methods were used for this purpose: optical microscopy (OM), scanning electronic microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS), and X-ray Diffraction (XRD), among others. The final performance (abrasive wear and corrosion resistance) shown by the coatings obtained by these two methodologies was also analyzed. Thus, the abrasive wear resistance was analyzed by the rubber-wheel test, while the corrosion resistance was characterized with electrochemical methods. The characterization results obtained clearly showed that the coatings exhibit different microstructures according to feedstock powder characteristics (carbide grain size and/or composition) and the thermal spray process used for its deposition. Thus, the incorporation of WB to the cermet composition led to a high hardness coating, and the complementary hardness and toughness of the WC-Co coatings justify its better abrasion resistance. The presence of Ni on the metal matrix increases the free corrosion potential of the coating to more noble region. However, the WC-Co coatings show a lower corrosion rate and hence a higher protective performance than the rest of the coatings.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/172433
url https://hdl.handle.net/2445/172433
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3390/coatings10121157
Coatings, 2020, vol. 10, num. 12, p. 1157
https://doi.org/10.3390/coatings10121157
dc.rights.none.fl_str_mv cc-by (c) Garfias Bulnes, Andrea et al., 2020
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Garfias Bulnes, Andrea et al., 2020
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 17 p.
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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