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dc.contributor.authorAlfonso Reyes, Francisco Javier
dc.contributor.authorMartínez Trinidad, José
dc.contributor.authorMoreno Pacheco, Luis Alfonso
dc.contributor.authorQuintana Hernández, Osvaldo
dc.contributor.authorWong Ángel, Wilbert
dc.contributor.authorGarcía León, Ricardo Andrés
dc.coverage.spatialColombiaen_US
dc.date.accessioned2025-10-10T14:02:25Z
dc.date.available2025-10-10T14:02:25Z
dc.date.issued2024-11-07
dc.identifier.issn2079-6412en_US
dc.identifier.urihttps://repositorioinstitucional.ufpso.edu.co/xmlui/handle/20.500.14167/5715
dc.description.abstractEste estudio presenta nuevos resultados sobre el comportamiento práctico de adhesión de una capa de boruro formada sobre aleación Monel 400, desarrollada mediante boruración en paquete de polvo (PPBP) a 1223 K durante 2, 4 y 6 h de tiempos de exposición, obteniendo espesores de capa de aproximadamente 7,9 a 23,8 µm. Las capas de boruro de níquel se caracterizaron mediante microscopía óptica, nanoindentación Berkovich, difracción de rayos X (DRX) y microscopía electrónica de barrido (MEB) para determinar la microestructura, la distribución de la dureza y los mecanismos de falla sobre las pistas desgastadas. Se realizaron pruebas de rayado en la aleación Monel 400 borurada de acuerdo con la norma ASTM C-1624, aplicando una carga normal progresivamente creciente de 1 a 85 N utilizando un penetrador de diamante Rockwell-C, revelando que las cargas críticas (L C1 , L C2 y L C3 ) aumentaron con el espesor de la capa. Las pruebas monitorearon el coeficiente de fricción y la tensión residual en tiempo real. Las cargas críticas se determinaron con base en la correlación entre la fuerza normal y la inspección visual de la superficie desgastada, identificando grietas (falla cohesiva) o desprendimiento (falla adhesiva). Los resultados expusieron las fallas cohesivas que aparecieron como grietas hertzianas, mientras que las fallas adhesivas fueron astillamiento y delaminación, con cargas críticas que alcanzaron hasta 49.0 N para las muestras boruradas durante 6 h. Además, los resultados indicaron que las cargas críticas aumentaron con un mayor espesor de capa. La dureza de la capa de boruro fue de aproximadamente 12 ± 0.3 GPa, ~4.0 veces mayor que la del sustrato, y el módulo de Young alcanzó 268 ± 15 GPa. Estos hallazgos subrayan que el PPBP mejora significativamente las propiedades mecánicas de la superficie, demostrando el potencial para aplicaciones que exigen alta resistencia al desgaste y fuerte adhesión de la capa.en_US
dc.language.isoengen_US
dc.relationhttps://www.mdpi.com/2079-6412/14/11/1414en_US
dc.titleEfecto del espesor de la capa sobre la adhesión práctica de la aleación Monel 400 boruradaen_US
dc.title.translatedEffect of layer thickness on the practical adhesion of boron-coated Monel 400 alloyen_US
dc.contributor.cvlacRicardo Andrés García León [0001454975]en_US
dc.contributor.googlescholarJosé Martínez Trinidad [l2OsFsQAAAAJ]en_US
dc.contributor.googlescholarLuis Alfonso Moreno Pacheco [YlG3DnQAAAAJ]en_US
dc.contributor.googlescholarRicardo Andrés García León [emeJT3sAAAAJ]en_US
dc.contributor.orcidJosé Martínez Trinidad [0000-0002-5445-2681]en_US
dc.contributor.orcidLuis Alfonso Moreno Pacheco [0000-0001-8723-8836]en_US
dc.contributor.orcidRicardo Andrés García León [0000-0002-2734-1425]en_US
dc.contributor.researchgateRicardo Andrés García León [Ricardo-Garcia-Leon]
dc.contributor.scopusJosé Martínez Trinidad [8432492800]en_US
dc.contributor.scopusLuis Alfonso Moreno Pacheco [23976809300]en_US
dc.contributor.scopusWilbert Wong Ángel [55081966900]en_US
dc.contributor.scopusRicardo Andrés García León [57192545232]en_US
dc.description.abstractenglishThis study presents new results on the practical adhesion behavior of a boride layer formed on Monel 400 alloy, developed using the powder-pack boriding (PPBP) at 1223 K for 2, 4, and 6 h of exposure times, obtaining layer thicknesses from approximately 7.9 to 23.8 μm. The nickel boride layers were characterized using optical microscopy, Berkovich nanoindentation, X-ray diffraction (XRD), and scanning electron microscopy (SEM) to determine microstructure, hardness distribution, and failure mechanisms over the worn tracks. Scratch tests were conducted on the borided Monel 400 alloy according to the ASTM C-1624 standard, applying a progressively increasing normal load from 1 to 85 N using a Rockwell-C diamond indenter, revealing that critical loads (LC1, LC2, and LC3) increased with layer thickness. The tests monitored the coefficient of friction and residual stress in real time. Critical loads were determined based on the correlation between the normal force and visual inspection of the worn surface, identifying cracks (cohesive failure) or detachment (adhesive failure). The results exposed those cohesive failures that appeared as Hertzian cracks, while adhesive failures were chipping and delamination, with critical loads reaching up to 49.0 N for the 6 h borided samples. Also, the results indicated that critical loads increased with greater layer thickness. The boride layer hardness was approximately 12 ± 0.3 GPa, ~4.0 times greater than the substrate, and Young’s modulus reached 268 ± 15 GPa. These findings underscore that PPBP significantly enhances surface mechanical properties, demonstrating the potential for applications demanding high wear resistance and strong layer adhesion.en_US
dc.subject.proposalMonel 400 boruradoen_US
dc.subject.proposalFallo de adhesiónen_US
dc.subject.proposalEspesor de la capaen_US
dc.subject.proposalPrueba de rayadoen_US
dc.subject.proposalNíquel boruradoen_US
dc.subject.keywordsBorided Monel 400en_US
dc.subject.keywordsAdhesion failureen_US
dc.subject.keywordsLayer thicknessen_US
dc.subject.keywordsScratch testen_US
dc.subject.keywordsNickel borideden_US
dc.publisher.facultyFacultad ingenieríasen_US
dc.type.redcolhttp://purl.org/redcol/resource_type/ARTen_US
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dc.identifier.DOIhttps://doi.org/10.3390/coatings14111414en_US


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