Examinando por Autor "Arroyave Franco, Mauricio"
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Ítem Colombia y la nueva revolución industrial(Ministerio de Ciencia, Tecnología e Innovación, 2020-12) Niño-Ruiz, Elías D.; Allain, Jean Paul; Montoya, José Alejandro; Mejía Arango, Juan Luis; Eisenhauer, Markus; Noriega E., María del Pilar; Arroyave Franco, Mauricio; Álvarez-Láinez, Mónica; Cadavid Giraldo, Nora; Quintero-Montoya, Olga L.; Ayala, Orlando; Abello, Raimundo; Osswald, Tim; Universidad EAFIT; Universidad del ValleÍtem Deposition and characterization of duplex treated coating system applied on hot work steel AISI H13(Universidad Simón Bolívar, 201-08-08) Bejarano Gaitán, Gilberto; Arroyave Franco, Mauricio; Gómez Botero, Maryori; Universidad EAFIT. Departamento de Ciencias Básicas; marroya5@eafit.edu.co; Electromagnetismo Aplicado (Gema)AISI H13 steel is widely used for extrusion moulds and other hot work tools fabrication, due to its high toughness, strength and hardness around 56 HRC (Rockwell C) -- However, this steel possesses a relatively low wear resistance, which reduces its life time under high loading conditions -- The aim of this work was to enhance the wear resistance of the steel H13 using the following surface treatments:austenitizing + quenching + tempering (further called “tempering”), tempering and bath nitriding, tempering and coated with chromium nitride (CrN), tempering + bath nitriding + coated with CrN (further called “Duplex coating”) -- The properties of the treated samples were compared with each other in dependence of the made surface treatment -- The coatings were deposited using the r.f. balanced magnetron sputtering deposition technique -- The total thickness of the coatings was maintained at 5 µm, while the thickness of the nitrided zone was approximately 140 µm -- The microstructure and the crystalline phase composition were investigated by Scanning -- Electron Microscopy (SEM) and X-ray diffraction (XRD) technique, respectively -- The hardness and the adhesion of the coatings were determined by micro indentation measurements and the Rockwell indentation test, respectively -- The wear resistance of the coatings was evaluated using ball on disc tests -- The duplex treated samples presented a hardness three order of magnitude higher and showed a wear rate six times smaller than those samples only temperedÍtem Desarrollo de infraestructura para investigación: de nuevo al filo de la oportunidad(Universidad EAFIT, 2019-11-13) Arroyave Franco, Mauricio; Universidad EAFITÍtem Identification by force modulation microscopy of nanoparticles generated in vacuum arcs(Universidad EAFIT, 2006-06-01) Arroyave Franco, Mauricio; Universidad EAFITÍtem La microscopia de Barrido por Sonda: herramienta básica en las nanociencias(Universidad EAFIT, 2008) Arroyave Franco, Mauricio; Universidad EAFITÍtem Nanoindentation based on force spectroscopy with an atomic force(Universidad EAFIT, 2008-12-01) Arroyave Franco, Mauricio; Universidad EAFIT