Slurry erosion resistance of thermally sprayed Nb2O5 and Nb2O5+WC12Co composite coatings deposited on AISI 1020 carbon steel

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dc.contributor.authorFals H.C.
dc.contributor.authorLourencato L.A.
dc.contributor.authorOrozco M.S.
dc.contributor.authorBelem M.J.X.
dc.contributor.authorLima C.R.C.
dc.date.accessioned2024-03-12T23:45:53Z
dc.date.available2024-03-12T23:45:53Z
dc.date.issued2020
dc.description.abstract© 2020 Elsevier Ltd and Techna Group S.r.l.Niobium pentoxide (Nb2O5) has excellent physicochemical properties regardless of the processing technology. The interest in its application in several fields has increased, especially in corrosive environments. However, when higher wear resistance is required, this material shows poorer results when compared to carbide base metals. In this work, the erosive wear resistance of thermally sprayed Nb2O5 coatings with and without carbide addition was evaluated. 500 μm thick coatings of Nb2O5 and Nb2O5 + 25% WC12Co were deposited onto AISI 1020 steel by flame spray. The coatings were characterized in the cross section by SEM/EDS techniques. Microhardness (HV0.05) and fracture toughness (KIC) measurements by the Vickers indentation toughness test (VIT) technique were performed on the cross section of the coatings. Erosive wear resistance was determined using a container tribometer with erosive mixing at a particle velocity of 9.33 m/s and 90° particle incidence angles. A nonparametric Mann-Whitney statistical analysis was performed on the results, considering a p significance level of 0.05. The addition of 25% WC12Co to the Nb2O5 increased the microhardness and fracture toughness of the coating. Nb2O5+ WC12Co composite coatings showed higher resistance to erosive wear, showing 81 ± 9 mg mass loss, 51% lower than the Nb2O5 coating (157 ± 6 mg).
dc.description.firstpage27670
dc.description.issuenumber17
dc.description.lastpage27678
dc.description.volume46
dc.identifier.doi10.1016/j.ceramint.2020.07.264
dc.identifier.issn0272-8842
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34864
dc.relation.ispartofCeramics International
dc.rightsAcesso Restrito
dc.subject.otherlanguageCoatings
dc.subject.otherlanguageNb2O5
dc.subject.otherlanguageSlurry wear erosion
dc.subject.otherlanguageThermal spray
dc.subject.otherlanguageWC12Co
dc.titleSlurry erosion resistance of thermally sprayed Nb2O5 and Nb2O5+WC12Co composite coatings deposited on AISI 1020 carbon steel
dc.typeArtigo
local.scopus.citations17
local.scopus.eid2-s2.0-85089292912
local.scopus.subjectCorrosive environment
local.scopus.subjectIncidence angles
local.scopus.subjectITS applications
local.scopus.subjectNiobium pentoxide
local.scopus.subjectProcessing technologies
local.scopus.subjectSignificance levels
local.scopus.subjectThick coatings
local.scopus.subjectVickers indentation
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85089292912&origin=inward
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