Open AccessStudy of The Structure and Corrosion Behavior of Al-15%Mo Alloy
Author(s) -
Oualid Ghelloudj,
A. Gharbi,
K. Bouhamla,
M.Y. Debili,
D. Zelmati,
C.E. Ramoul,
T. Chouchane
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1818/1/012156
Subject(s) - molybdenum , intermetallic , dielectric spectroscopy , corrosion , materials science , scanning electron microscope , alloy , aluminium , metallurgy , electrochemistry , polarization (electrochemistry) , optical microscope , composite material , chemistry , electrode
The influence of the addition of molybdenum on the structure and corrosion behaviour of aluminium was studied using optical microscopy, scanning electron microscope (SEM), potentiodynamic polarization and electrochemical impedance spectroscopy. The results show that the addition of 15%wt molybdenum causes the precipitation of the AI 12 Mo intermetallic phase which appears in plate form on the aAl matrix. The results of the electrochemical tests show that the addition of molybdenum displaces the corrosion potential of aluminium towards positive values from -699 mV/ECS to -633 mV/ECS and increases the charge transfer resistance from to 4752 Ω2.cm 2 to 6608 Ω2.cm 2 .