TY - JOUR
T1 - Corrosion assessment of Ag and Cr modified Fe40Al intermetallic alloy in Hanks solution by electrochemical noise
AU - Rodriguez-Diaz, R. A.
AU - Reyes-Barragán, J. L.
AU - Arrieta-Gonzalez, C. D.
AU - Porcayo-Calderon, J.
AU - Serna, S.
N1 - Publisher Copyright:
© 2020 The Authors.
PY - 2020
Y1 - 2020
N2 - This research presents an evaluation of the corrosion performance of binary Fe40Al alloy and ternary Fe40Al-2.5Cr and Fe40Al-2.5Ag (at %) alloys exposed to a synthetic physiological solution that simulates biological human body fluids. Electrochemical noise measurements were made on Fe40Al based alloys during exposure to the biomimetic solution over a 30-day period. The electrochemical parameters of the evaluated alloys were compared. Polarization curves revealed that the corrosion current density of the Cr-modified Fe40Al alloy was less than that of the ternary Fe40Al-2.5Ag alloy; regarding electrochemical noise measurements, analyses revealed that both ternary alloys experienced a pitting corrosion during the entire immersion period. Additionally, the alloy Fe40Al-2.5Cr predominantly exhibited a higher corrosion rate than the Ag-modified intermetallic for the entire exposure time.
AB - This research presents an evaluation of the corrosion performance of binary Fe40Al alloy and ternary Fe40Al-2.5Cr and Fe40Al-2.5Ag (at %) alloys exposed to a synthetic physiological solution that simulates biological human body fluids. Electrochemical noise measurements were made on Fe40Al based alloys during exposure to the biomimetic solution over a 30-day period. The electrochemical parameters of the evaluated alloys were compared. Polarization curves revealed that the corrosion current density of the Cr-modified Fe40Al alloy was less than that of the ternary Fe40Al-2.5Ag alloy; regarding electrochemical noise measurements, analyses revealed that both ternary alloys experienced a pitting corrosion during the entire immersion period. Additionally, the alloy Fe40Al-2.5Cr predominantly exhibited a higher corrosion rate than the Ag-modified intermetallic for the entire exposure time.
KW - Corrosion
KW - Electrochemical noise
KW - Hanks solution
KW - Iron aluminides
KW - Microstructural characterization
UR - http://www.scopus.com/inward/record.url?scp=85089698960&partnerID=8YFLogxK
U2 - 10.20964/2020.08.65
DO - 10.20964/2020.08.65
M3 - Artículo
AN - SCOPUS:85089698960
SN - 1452-3981
VL - 15
SP - 7228
EP - 7241
JO - International Journal of Electrochemical Science
JF - International Journal of Electrochemical Science
ER -