الفهرس 
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Abstract
N-(Pyridin-2-yl-carbamothioyl)benzamide (PCMB) wasnewly synthesized and tested as a corrosion inhibitor for C-steel in 0.5 M H2SO4
using chemical and electrochemicaltechniques. Polarization
measurements showed that the synthesized compound acted as a mixed
inhibitor. The inhibition efficiencies obtained from the different methods
were in good agreement.The inhibitive action ofthis compoundis
discussed in termsof blocking the electrode surface byadsorption of the
inhibitor according toLangmuir isotherm.The effect of temperature on the
corrosion behaviour in the absence and presence of 2.5 × 10−5 M of
PCMB,was studied (283–308 K). The associated activation energies (Ea)
and the thermodynamic parameters (:H*, :S*,Kads,:G°ads) for the
adsorption process were determined.The :G°adsvalue is -
36.55kJ/molindicated that, the adsorption mechanism of PCMB on Csteel
in 0.5 M H2SO4 solution was mixed between physisorptionand
chemisorption processes.