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dc.rights.licenseAtribución-NoComercial 4.0 Internacional
dc.contributor.advisorRestrepo Parra, Elisabeth
dc.contributor.authorNieto Espinosa, Juan Pablo
dc.date.accessioned2020-10-20T19:22:11Z
dc.date.available2020-10-20T19:22:11Z
dc.date.issued2019
dc.identifier.citationJuan Pablo Nieto Espinosa, Evaluación de la resistencia a la corrosión a través de métodos electroquímicos en películas delgadas de nitruro de titanio-circonio, Universidad Nacional de Colombia, 2019.
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/78551
dc.description.abstractEn este experimento, películas delgadas del nitruro ternario (TiZr)N fueron sintetizadas sobre sustratos de acero 316L mediante la técnica arco catódico pulsado. Se realizaron medidas de las energías de los rayos X característicos impactando la supeficie del recubrimiento por medio de la técnica EDS, con el fin de determinar los elementos presentes en las muestras. La microestructura y la cristalinidad de los recubrimientos fué investigada usando rayos X (XRD), por medio de la cual se realizaron análisis de fase, se estimaron el parámetro de red, la textura cristalográfica, el tamaño del cristalito y la micro-deformación. La caracterización morfológica se realizó mediante las técnicas microscopía electrónica de barrido (SEM) y microscopía de fuerza atómica (AFM). La evaluación de la resistencia a la corrosión se realizó a través de curvas de polarización potenciodinámica (PPD) y espectroscopía de impedancia electroquímica (EIS). La corriente de corrosión, el potencial de circuito abierto, la resistencia a la polarización asi como comportamientos capacitivos en la interface electrodo-electrolíto presentaron una variación interesante en términos de los parámetros de síntesis. (Texto tomado de la fuente)
dc.description.abstractIn this experiment, ternary (TiZr)N thin lms were synthesized on stainless steel 316L using pulsed cathodic arc. Measurements of the characteristic X-ray energies were made by impacting the surface of the coating using EDS technique, to determine the elements present in the samples. The microstructure and crystallinity of the Coatings were investigated using X-ray difraction (XRD), by means of which phase analyzes were performed, the lattice parameter, crystallographic texture, crystallite size and micro-deformation were estimated. Morphological characterization was performed using scanning electron microscopy (SEM) and atomic force microscopy (AFM) techniques. The corrosion resistance evaluation was carried out through potentiodynamic polarization curves (PPD) and electrochemical impedance spectroscopy (EIS). There, the corrosion current, the open circuit potential, the polarization resistance as well as capacitive behaviors in the electrode-electrolyte interfacce showed an interesting variation in terms of the synthesis parameters.
dc.format.extent60
dc.format.mimetypeapplication/pdf
dc.language.isospa
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subject.ddc530 - Física
dc.titleEvaluación de la resistencia a la corrosión a través de métodos electroquímicos en películas delgadas de nitruro de titanio-circonio
dc.title.alternativeEvaluation of the corrosion resistance by electrochemical methods in thin films of titanium-zirconium nitride
dc.typeOtro
dc.rights.spaAcceso abierto
dc.description.additionalMemoria de tesis de maestría presentada como requisito parcial para optar por el título de: Magister en Ciencias - Física. -- Línea de investigación: Ciencia de la Corrosión y Materiales en Forma de Películas Delgadas.
dc.type.driverinfo:eu-repo/semantics/other
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dc.publisher.programManizales - Ciencias Exactas y Naturales - Maestría en Ciencias - Física
dc.contributor.researchgroupLaboratorio de Fisica del Plasma
dc.description.degreelevelMaestría
dc.publisher.departmentDepartamento de Física y Química
dc.publisher.branchUniversidad Nacional de Colombia - Sede Manizales
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.subject.proposalRecubrimientos
dc.subject.proposalCoatings
dc.subject.proposalPelículas delgadas
dc.subject.proposalThin films
dc.subject.proposalZirconium titanium nitride
dc.subject.proposalNitruro de titanio circonio
dc.subject.proposalResistencia a la corrosión
dc.subject.proposalCorrosion resistance
dc.subject.proposalOpen circuit potential
dc.subject.proposalPotencial de circuito abierto
dc.subject.proposalResistencia a la polarización
dc.subject.proposalPolarization resistance
dc.subject.proposalDouble layer capacitance
dc.subject.proposalPolarización potenciodinámica
dc.type.coarhttp://purl.org/coar/resource_type/c_1843
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aa
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Atribución-NoComercial 4.0 InternacionalEsta obra está bajo licencia internacional Creative Commons Reconocimiento-NoComercial 4.0.Este documento ha sido depositado por parte de el(los) autor(es) bajo la siguiente constancia de depósito