TY - GEN
T1 - Effect of surface finish on TiO2 films obtained thermally as corrosion protection
AU - Flores-Alvarez, J. F.
AU - Rodríguez-Gómez, F. J.
AU - Onofre-Bustamante, E.
N1 - Publisher Copyright:
© The Electrochemical Society.
PY - 2019
Y1 - 2019
N2 - The present work is a study of the effect of surface finish (grade 1000, 1200 and fine polishing to 3 μ) and of the corrosion resistence in films obtained by heat treatment (HT) an annealing at two different temperatures (700 and 800 °C) in Ti6Al4V alloy. Corrosion behavior through the use of electrochemical techniques such as polarization curves (CP) and electrochemical impedance spectroscopy (EIS) in a Hank's saline solution was evaluated. In addition, the samples were characterized by Scanning Electron Microscopy (SEM) and microanalysis by Energy Dispersion X-ray Spectroscopy (EDS), in their arrival conditions (untreated) and after heat treatments (HT). The microstructural characterization revealed the presence of a biphasic microstructure a phase matrix α (rich in Al) with β (rich in V) distributed in the grain boundaries. The results of the electrochemical evaluation indicate decrease in the corrosion rate of the samples with HT at (700 and 800 °C) with respect to the untreated samples.
AB - The present work is a study of the effect of surface finish (grade 1000, 1200 and fine polishing to 3 μ) and of the corrosion resistence in films obtained by heat treatment (HT) an annealing at two different temperatures (700 and 800 °C) in Ti6Al4V alloy. Corrosion behavior through the use of electrochemical techniques such as polarization curves (CP) and electrochemical impedance spectroscopy (EIS) in a Hank's saline solution was evaluated. In addition, the samples were characterized by Scanning Electron Microscopy (SEM) and microanalysis by Energy Dispersion X-ray Spectroscopy (EDS), in their arrival conditions (untreated) and after heat treatments (HT). The microstructural characterization revealed the presence of a biphasic microstructure a phase matrix α (rich in Al) with β (rich in V) distributed in the grain boundaries. The results of the electrochemical evaluation indicate decrease in the corrosion rate of the samples with HT at (700 and 800 °C) with respect to the untreated samples.
UR - http://www.scopus.com/inward/record.url?scp=85084090795&partnerID=8YFLogxK
U2 - 10.1149/09401.0001ecst
DO - 10.1149/09401.0001ecst
M3 - Contribución a la conferencia
AN - SCOPUS:85084090795
T3 - ECS Transactions
SP - 1
EP - 17
BT - Proceedings of the XXXIV Congreso Nacional de la Sociedad Mexicana de Electroquimica and 12th Meeting of the Mexican Section of The Electrochemical Society
A2 - Orozco-Cruz, R.
A2 - Galvan-Martinez, R.
A2 - Balderas-Hernandez, P.
A2 - Cabral-Miramontes, J. A.
PB - Institute of Physics Publishing
T2 - 34th Congreso Nacional de la Sociedad Mexicana de Electroquimica and 12th Meeting of the Mexican Section of The Electrochemical Society
Y2 - 2 June 2019 through 6 June 2019
ER -