Microstructural characterization and high-temperature wear behavior of refractory niobium-carbide growth in intermetallic iron-aluminide coatings

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dc.authoridgunen, ali/0000-0002-4101-9520
dc.contributor.authorGunen, Ali
dc.contributor.authorAltinay, Yasemin
dc.contributor.authorSabun, Sahin
dc.date.accessioned2024-09-18T20:28:01Z
dc.date.available2024-09-18T20:28:01Z
dc.date.issued2024
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractIron-aluminide (Fe-Al) intermetallics are characterized by their high-temperature oxidation resistance. However, their use in tribo-corrosive environments is limited due to their low hardness and brittle nature. To overcome this weakness, the feasibility of forming composite coatings (NbC-FeAl) by intercalation of refractory NbC particles into Fe-Al coatings by thermo-reactive diffusion technique and its effect on high-temperature wear behavior was investigated in this study. The coatings obtained underwent comprehensive characterization using scanning electron microscopy, X-ray diffraction, microhardness measurements, and ball-on-disc wear tests, providing valuable insights into their properties. The characterization studies showed that increasing the growth of NbC in the intermetallic iron-aluminide content resulted in a slight increase in the hardness and a decrease in the thickness of the iron-aluminide layer. Moreover, the formation of NbC in Fe-Al coatings increased the dislocation densities of the coatings, resulting in an improvement of wear resistance 2.7 times at room temperature and up to 3.5 times at 500 degrees C. While different wear mechanisms occurred in coated samples at room temperature, the dominant wear mechanism at 500 degrees C evolved into an oxidatively supported adhesive wear mechanism. This study showed that Fe-Al coatings exhibited better wear response at both room and elevated temperatures when reinforced with NbC.en_US
dc.description.sponsorshipIskenderun Technical University Research Projects Unit under the Graduate Thesis Project (ISTE-BAP) [2022LTP05]en_US
dc.description.sponsorshipThis study was conducted with the support of the Iskenderun Technical University Research Projects Unit under the Graduate Thesis Project (ISTE-BAP) with the project number 2022LTP05. The authors would like to express their gratitude to the Iskenderun Technical University Research Projects Unit for their support.en_US
dc.identifier.doi10.1016/j.engfailanal.2024.108513
dc.identifier.issn1350-6307
dc.identifier.issn1873-1961
dc.identifier.scopus2-s2.0-85195643348en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.engfailanal.2024.108513
dc.identifier.urihttps://hdl.handle.net/20.500.12483/10681
dc.identifier.volume163en_US
dc.identifier.wosWOS:001253296000001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofEngineering Failure Analysisen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectIntermetallicen_US
dc.subjectIron aluminideen_US
dc.subjectRefractoryen_US
dc.subjectNiobium carbideen_US
dc.subjectComposite coatingsen_US
dc.subjectHigh-temperature wearen_US
dc.titleMicrostructural characterization and high-temperature wear behavior of refractory niobium-carbide growth in intermetallic iron-aluminide coatingsen_US
dc.typeArticleen_US

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