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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/49158

    Título
    Improvements in tribological and anticorrosion performance of porous Ti-6Al-4V via PEO coating
    Autor
    García Cabezón, Ana CristinaAutoridad UVA Orcid
    Rodríguez Méndez, María LuzAutoridad UVA Orcid
    Amigó Borrás, Vicente
    Bayón, Raquel
    Salvo Comino, CoralAutoridad UVA
    García Hernández, CeliaAutoridad UVA
    Martín Pedrosa, FernandoAutoridad UVA Orcid
    Año del Documento
    2021
    Editorial
    Springer
    Descripción
    Producción Científica
    Documento Fuente
    Friction, 2021, vol. 9, n. 5, p. 1303-1318
    Resumo
    Medical implants manufactured using biomaterial Ti-6Al-4V exhibit some disadvantages. Its higher elastic modulus than that of natural bone can cause stress shielding problems. This can be avoided using Ti-6Al-4V with pores in the implant structure. However, poor corrosion and tribocorrosion behaviors are yielded because of the large area exposed to the medium. To mitigate both issues, coating technologies can be applied. The plasma electrolytic oxidation (PEO) process is a cost-effective process that has been used successfully in nonporous Ti alloys. In this study, two PEO coatings with different amounts of Ca/P are used. However, reports regarding their application in porous materials are scarce. The effects of PEO treatments on corrosion and tribocorrosion in Ti-6Al-4V powder metallurgy are analyzed herein. The porous materials provide an efficient surface for PEO coatings, as demonstrated via scanning electron microscopy (SEM) and atomic force microscopy (AFM), and the porosity of the substrates improved the adherence of the coatings. The corrosion resistance measured via electrochemical impedance spectroscopy confirmed the beneficial effect of the coatings, particularly for long exposure time. The lower roughness, small pore size, and more compact film observed in the PEO-Ca/P sample resulted in favorable tribological and corrosion properties.
    Materias Unesco
    23 Química
    22 Física
    Palabras Clave
    Ti-based alloys
    Corrosion
    Tribocorrosion
    Surface modification
    ISSN
    2223-7690
    Revisión por pares
    SI
    DOI
    10.1007/s40544-020-0480-2
    Patrocinador
    Ministerio de Educación y Ciencia (project RTI2018-097990-B-I00)
    Junta de Castilla y León (projects VA275P18 and VA044G19)
    Version del Editor
    https://link.springer.com/article/10.1007%2Fs40544-020-0480-2
    Propietario de los Derechos
    © 2021 Springer
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/49158
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
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    • BioEcoUVa - Artículos de revista [195]
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    Improvements-in-tribological.pdf
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    Attribution-NonCommercial-NoDerivatives 4.0 InternacionalExceto quando indicado o contrário, a licença deste item é descrito como Attribution-NonCommercial-NoDerivatives 4.0 Internacional

    Universidad de Valladolid

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