Study of the electrochemical behavior of a Ti6Al4V alloy modified by heat treatments and chemical conversion
Por:
Flores-Alvarez, J. F., Rodriguez-Gomez, F. J., Onofre-Bustamante, E., Genesca-Llongueras, J.
Publicada:
15 abr 2017
Resumen:
The present study examines the effect of the thermal annealing treatment
temperature (TT 700 and 800 degrees C) and the effect of cerium as a
chemical conversion treatment (CeCCT) on the Ti6AI4V alloy with the
increase of the corrosion resistance of the base material. These
coatings were evaluated using scanning electron microscopy (SEM) to
determine the morphology and substrate coverage. Atomic force microscopy
(AFM) was used to determine the level of roughness for each sample and
technique by which the oxide was obtained. Additionally, curves
polarization (CP) and electrochemical impedance spectroscopy (EIS) were
conducted using an electrochemical characterization with Hank's saline
(HK) as the electrolyte. The results show that with the thermal
annealing treatment at 800 degrees C for one hour, the TiO2 film is
mainly obtained in the rutile phase and the film will have increased
anticorrosive properties if it is sealed with cerium. Therefore, the use
of these treatments in permanent prosthesis could be possible. (C) 2017
Elsevier B.V. All rights reserved.
Filiaciones:
Flores-Alvarez, J. F.:
Univ Nacl Autonoma Mexico, Fac Quim, Dept Ingn Met, Ciudad Univ, Mexico City, DF, Mexico
Rodriguez-Gomez, F. J.:
Univ Nacl Autonoma Mexico, Fac Quim, Dept Ingn Met, Ciudad Univ, Mexico City, DF, Mexico
Onofre-Bustamante, E.:
IPN, Unidad Altamira, Ctr Invest Ciencia Aplicada & Tecnol Avanzada, Altamira, Tamaulipas, Mexico
Genesca-Llongueras, J.:
PUNTA UNAM, Polo Univ Tecnol Avanzada, PIIT, Apodaca, Nuevo Leon, Mexico
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