Production and characterization of niobium carbide coatings produced on tool steels by thermoreactive deposition/diffusion

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dc.contributor.authorCastillejo, F.E.
dc.contributor.authorMarulanda, D.M.
dc.contributor.authorOlaya, J.J.
dc.date.accessioned2020-01-21T12:13:48Z
dc.date.available2020-01-21T12:13:48Z
dc.date.issued2014-04
dc.descriptionEn este trabajo se depositaron recubrimientos de carburo de niobio sobre aceros AISI M2, H13 y D2, utilizando la técnica de deposición por difusión termorreactiva. Los carburos se obtuvieron usando baños de sales compuestos por bórax fundido, ferroniobio, ferrovanadio y aluminio a una temperatura de 1.020 °C durante 4 horas. La presencia de los recubrimientos fue observada por microscopia electrónica de barrido. Las fases fueron determinadas usando difracción de rayos X, y se utilizó microdureza para determinar la dureza. El comportamiento electroquímico fue estudiado mediante curvas de polarización potenciodinámica para determinar la densidad de corriente de corrosión, y espectroscopia de impedancia electroquímica para determinar la resistencia a la polarización. Los resultados fueron comparados con las propiedades del sustrato sin recubrimiento y en general se observó mayor dureza y mejor resistencia a la corrosión en los recubrimientos producidos.spa
dc.description.abstractIn this work, niobium carbide coatings were deposited on AISI M2, H13, and D2 tool steels by thermoreactive deposition/diffusion. The carbides were obtained using salt baths composed of molten borax, aluminum, and ferroniobium at a temperature of 1020 °C for 4 hours. The coatings were observed via scanning electron microscopy. The phases were determined using X-ray diffraction, and Vickers indentation was used to determine the hardness. The electrochemical behavior was studied via potentiodynamic polarization curves to determine the rate of corrosion and electrochemical impedance spectroscopy was used to determine the resistance to polarization. The results were compared with the properties of the substrate without a coating, and in general, greater hardness and better corrosion resistance were observed with the coatings.spa
dc.description.domainhttp://unidadinvestigacion.usta.edu.cospa
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.4067/S0718-33052014000200005spa
dc.identifier.urihttp://hdl.handle.net/11634/20878
dc.publisher.branchCRAI-USTA Bogotáspa
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dc.rightsAtribución-NoComercial-CompartirIgual 2.5 Colombia
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/2.5/co/
dc.subject.keywordDiffusionspa
dc.subject.keywordNiobium carbidespa
dc.subject.keywordImpedancespa
dc.subject.keywordTool steelsspa
dc.subject.keywordCorrosionspa
dc.subject.proposalDifusiónspa
dc.subject.proposalCarburos de niobiospa
dc.subject.proposalImpedanciaspa
dc.subject.proposalAceros para herramientasspa
dc.subject.proposalCorrosiónspa
dc.titleProduction and characterization of niobium carbide coatings produced on tool steels by thermoreactive deposition/diffusionspa
dc.type.categoryGeneración de Nuevo Conocimiento: Artículos publicados en revistas especializadas - Electrónicosspa

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