Fabricación de películas anódicas porosas sobre titanio mediante oxidación electrolítica por plasma
2012; Industrial University of Santander; Volume: 25; Linguagem: Espanhol
ISSN
2145-8480
AutoresOscar Galvis, David Quintero, Juan José Pavón, Juan G. Castaño, Félix Echeverría,
Tópico(s)Electrophoretic Deposition in Materials Science
ResumoResumen Se obtuvieron recubrimientos anodicos sobre Ti mediante oxidacion electrolitica por plasma en soluciones de acido sulfurico (H2SO4) con diferentes concentraciones de acido fosforico (H3PO4) como aditivo. Se evaluo el comportamiento frente a la corrosion de los recubrimientos mediante Espectroscopia de Impedancia Electroquimica (EIE) en soluciones simuladas de fluidos corporales (SBF). La caracterizacion mediante SEM/EDS y espectroscopia Raman permitio observar una alta influencia del contenido de H3PO4 en la morfologia y composicion de los recubrimientos. Palabras clave: oxidos de titanio, oxidacion electrolitica por plasma, recubrimientos anodicos, SBF, biomateriales. Fabrication of porous anodic layers on titanium by plasma electrolytic oxidation Abstract Anodic coatings were obtained on Ti through plasma electrolytic oxidation in sulfuric acid (H2SO4) solutions containing phosphoric acid (H3PO4) as an additive. The coatings corrosion behavior was evaluated by means of Electrochemical Impedance Spectroscopy (EIS) in Simulated Body Fluid solution (SBF). Characterization of the coatings was made using SEM/EDS and Raman spectroscopy, It allowed to observe great influence in its morphology and composition due to phosphoric acid content into the coatings. Keywords: titanium oxides, plasma electrolytic oxidation, anodic coatings, SBF, biomaterials.
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