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Corrosion of Al 85 Ni 9 Ce 6 amorphous alloy in the first hours of immersion in 3.5‐wt% NaCl solution: The role of surface chemistry
Author(s) -
Oliveira Leandro Antônio,
Oliveira Mara Cristina Lopes,
Ríos Carlos Triveño,
Antunes Renato Altobelli
Publication year - 2019
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.6726
Subject(s) - x ray photoelectron spectroscopy , corrosion , alloy , dielectric spectroscopy , immersion (mathematics) , materials science , amorphous solid , metallurgy , hydroxide , electrochemistry , amorphous metal , nuclear chemistry , analytical chemistry (journal) , chemical engineering , inorganic chemistry , chemistry , crystallography , electrode , environmental chemistry , mathematics , pure mathematics , engineering
The surface chemistry and corrosion behavior of Al 85 Ni 9 Ce 6 melt‐spun ribbons were studied after the first hours of immersion in 3.5‐wt% NaCl solution at room temperature. X‐ray photoelectron spectroscopy (XPS) was used to assess the chemical states of Al, Ce, Ni, and O. Electrochemical impedance spectroscopy was used to assess the corrosion resistance of the Al 85 Ni 9 Ce 6 ribbons. The alloy remained immersed for up to 48 hours. The results showed that hydroxide species in the passive film play a central role in the corrosion behavior of the Al 85 Ni 9 Ce 6 alloy.