Electrochemical characterization and passivation behaviour of new beta-titanium alloys (Ti35Nb10Ta-xFe)

Laboulais, J. Navarro; Mata, Angèlica Amigó; Borrás, Vicente Amigó; Muñoz, A. Igual

doi:10.1016/j.electacta.2016.12.125

Cited by 35 publications

(12 citation statements)

References 22 publications

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“…The deformation of asperities and the mechanical detachment of the passive film under sliding cause the exposure of the underlying metal to the corrosive electrolyte. The surface is then re-oxidized with an oxidation kinetics that depends on the electrode potential [18]. These phenomena occur cyclically, allowing for the continuous exposure of metallic material to be oxidized.…”

Section: Discussionmentioning

confidence: 99%

Chemo-mechanical effects on the tribocorrosion behavior of titanium/ceramic dental implant pairs in artificial saliva

Borrás

Buch

Cardete

et al. 2019

Wear

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Section: Discussionmentioning

confidence: 99%

Chemo-mechanical effects on the tribocorrosion behavior of titanium/ceramic dental implant pairs in artificial saliva

Borrás

Buch

Cardete

et al. 2019

Wear

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“…Depending on the selected manufacturing parameters, alloys may present a lack of diffusion, which ends in elevated microstructure heterogeneity [ 11 ]. The addition of Fe diminishes the α phase due to its greater beta stabilizer property [ 12 ]. Chemical compositions or charges on the surface of titanium implants differ according to their bulk composition and surface treatments.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Ti-35Nb-10Ta-1.5Fe by the Double Acid-Etching Process

et al. 2018

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Surface topography and composition influence the osteoblastic proliferation and osseointegration rates, which favor the biomechanical stability of bone anchoring and implants. In recent years, beta titanium alloys have been developed, and are composed of biocompatible elements, have low elastic modulus, high corrosion resistance, and mechanical properties to improve the long performance behavior of biomaterials. In the present research, the influence of the acid-etching process was studied in Ti6Al4V ELI and Ti35Nb10Ta1.5Fe. Samples were etched in a two-step acid treatment. Surface roughness parameters were quantified under a confocal microscope, topography was studied by scanning electron microscopy, and surface composition was analyzed with energy dispersive X-ray spectroscopy. The results revealed that the two-step acid treatment changes the topography of the β alloy, increases the surface area, and changes the chemical composition of the surface. Two differentiated regions were identified in the Ti35Nb10Ta1.5Fe alloy after the acid-etching process: The α + β region with higher values of mean roughness due to the lower chemical resistance of this region; and the β region with lower values of roughness parameters.

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“…Wang y Zheng obtienen una capa de óxido combinada de TiO 2 y Nb 2 O 3 en la aleación Ti16Nb (%atómico) (Wang and Zheng, 2009), cosa que Zhukova y colaboradores confirman para la aleación Ti22Nb6Ta (%atómico) (Zhukova et al, 2014). Navarro Laboulais y colaboradores confirman que la aleación Ti35Nb10Ta muestra una menor corrosión activa y pasiva comparado con el TiCP (Navarro Laboulais et al, 2017).…”

Section: A) B)unclassified

“…En esta investigación se ha obtenido una buena resistencia frente a la corrosión electroquímica para la aleación Ti35Nb10Ta, con una ligera influencia en la resistividad del óxido por la adición de Fe y una gran influencia del potencial aplicado. Esto ha sido comprobado en un medio más ácido (1M H 5 SO 4 ) por Navarro Laboulais y colaboradores (Navarro Laboulais et al, 2017). Los valores de OCP obtenidos no presentan mucha variación con el contenido en Fe de la aleación, y se corresponden con valores semejantes a los obtenidos por otros autores (Dalmau et al, 2015;Biesiekierski et al, 2016).…”

Section: A) B)unclassified

“…Los valores de OCP obtenidos no presentan mucha variación con el contenido en Fe de la aleación, y se corresponden con valores semejantes a los obtenidos por otros autores (Dalmau et al, 2015;Biesiekierski et al, 2016). Al estudiar la pasivación, se ha obtenido una mayor influencia del potencial aplicado que del contenido en Fe, con una velocidad de disolución pasiva mayor para potenciales más elevados, del mismo modo que presentan otros autores para distintas aleaciones de titanio (Dalmau et al, 2013;Navarro Laboulais et al, 2017).…”

Section: A) B)unclassified

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Influencia de las adiciones de Fe en las aleaciones de Ti-Nb-Ta obtenidas mediante tecnología de polvos, para aplicaciones biomédicas

Mata¹

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Beta-titanium alloys for use as biomaterials are very interesting from the perspective of obtaining a reduction of the elastic modulus, which together with good mechanical properties, avoid the problems of stress shielding that, induce bone reabsorption. The obtaining process of these alloys is complex because the refractory elements that are normally used to stabilize the beta phase (Nb, Ta, Mo). Powder metallurgy is a relatively simple technology that allows the design of custom alloys, presenting ease in alloy modification, but this technique also presents some disadvantages, such as porosity, lack of diffusion or lack of grain size and phase transformation control.

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Electrochemical characterization and passivation behaviour of new beta-titanium alloys (Ti35Nb10Ta-xFe)

Cited by 35 publications

References 22 publications

Chemo-mechanical effects on the tribocorrosion behavior of titanium/ceramic dental implant pairs in artificial saliva

Chemo-mechanical effects on the tribocorrosion behavior of titanium/ceramic dental implant pairs in artificial saliva

Surface Modification of Ti-35Nb-10Ta-1.5Fe by the Double Acid-Etching Process

Influencia de las adiciones de Fe en las aleaciones de Ti-Nb-Ta obtenidas mediante tecnología de polvos, para aplicaciones biomédicas

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