@ARTICLE{Bau_Hig_2022,
author = "Bautista Ruiz, Jorge - Sánchez Molina, Jorge - Aperador, Willian Aperador",
title = "High-Temperature Corrosion Behavior of Bi3.75La0.25Ti3O12 and Bi3La1Ti3O12 Coating Prepared by rf Magnetron Sputtering",
abstract = ": Using the rf magnetron sputtering technique, Bi3.75La0.25Ti3O12 and Bi3La1Ti3O12 coatings
were formed and obtained as a thin film on Hastelloy substrates. When subjected to high-temperature
conditions, the effect of lanthanum on the anti-corrosive properties of the coatings was investigated.
The anti-corrosive response was evaluated by electrochemical impedance spectroscopy and potentiodynamic curves, which are rarely reported. Hot corrosion occurs through the electrochemical
mechanism, and more information can be obtained through electrochemical corrosion tests, which
are very effective and fast. The electrochemical behavior at high temperatures was studied via
molten salt corrosion tests, potentiodynamic polarization curves, and electrochemical impedance
spectroscopy. Additionally, the coatings were evaluated via scanning electron microscopy and
transmission microscopy to determine their morphology. With X-ray diffraction, the crystallinity
of the films was determined. It was determined that the corrosion rate directly correlates with the
temperature, attributed to the mechanisms induced by the Na2SO4 and V2O5 salts that generated
condensation. As the temperature increases, the density of the corrosion current increases in the thin
films of Bi3.75La0.25Ti3O12 and Bi3La1Ti3O12. When comparing the two compounds, it is determined
that the increase in lanthanum alters the positive acid character, thus reducing the dissolution of the
oxides and increasing protection.",
year = 2022,
publisher = "Metals",
url = "https://repositorio.ufps.edu.co/handle/ufps/6526",
}