Aluminum corrosion was inhibited by myrrh extract when
it was placed
in a solution of 1 M HCl. Several procedures were used for these tests,
including weight loss WL, potential dynamic polarization PL, and electrochemical
impedance EIS in addition to theoretical calculations like density
functional theory (DFT), Fukui functions, and Monte Carlo simulation.
Fourier transform infrared spectroscopy was used to analyze the compositional
surface of Al. Scanning electron microscopy was used to determine
the shape of the Al surface. The inhibition rate of Al corrosion in
HCl with varying myrrh extract contents at 25–45 °C was
studied. An analysis of the PL curves indicates that myrrh extract
is an inhibitor of mixed type. Upon increasing the concentration of
myrrh, the inhibition efficiency increased. Moreover, rising temperatures
decrease inhibition efficiency. It was discovered that the inhibition
process follows the Langmuir isotherm, demonstrating that a monolayer
has formed on the surface of aluminum. Theoretical and practical studies
proved the validity of the conclusions.
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