Author/Authors :
Chebabe، Driss نويسنده Laboratory of electrochemistry and corrosion study, University Ibn Tofail, Faculty of Science, Kenitra, Morocco , , Dermaj، Ahmed نويسنده Laboratory of electrochemistry and corrosion study, University Ibn Tofail, Faculty of Science, Kenitra, Morocco , , Ait Chikh، Zine El Abidine نويسنده Laboratory of electrochemistry and corrosion study, University Ibn Tofail, Faculty of Science, Kenitra, Morocco , , Ramli، Hamid نويسنده Laboratory of electrochemistry and corrosion study, University Ibn Tofail, Faculty of Science, Kenitra, Morocco , , Doubi، Mostafa نويسنده Laboratory of electrochemistry and corrosion study, University Ibn Tofail, Faculty of Science, Kenitra, Morocco , , Hajjaji ، Najat نويسنده Laboratory of electrochemistry and corrosion study, University Ibn Tofail, Faculty of Science, Kenitra, Morocco , , Srhiri، Abdellah نويسنده Laboratory of electrochemistry and corrosion study, University Ibn Tofail, Faculty of Science, Kenitra, Morocco ,
Abstract :
The dezincification of brass is a problem that has often been encountered in the
process of corrosion of brass in aqueous solution. Thus the inhibiting substances must used
to reduce the dissolution of these metallic materials. The present work aimed to study the
effect of 3-phenyl-1,2,4-triazole-5-thione (PTS) on Cu/Zn brass corrosion in 3% NaCl
solution. This latter is prepared with a new method in our laboratory. The efficiency of (PTS)
as brass (alloy 60 Cu-Zn) corrosion inhibitor in %3 NaCl solution was investigated using
electrochemical impedance spectroscopy and potentiodynamic measurements.The results
showed that the PTS is an excellent inhibitor. The inhibiting efficiency increased by an
increase of its concentration. At 10-3 M the important polarization resistance value of the
anodic branch at high current density is believed to be due to the resistance of the inhibitor
film formed .The spectroscopic techniques showed that the PTS can be also used as an
inhibitor of the dezincification of the brass in the same solution. Consequently, we have
concluded that the PTS has good inhibiting effect to stop brass dezincification phenomenon.
