Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

Reach Us reach to JOCPR whatsapp-JOCPR +44 1625708989
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Original Articles: 2015 Vol: 7 Issue: 10

Inhibition of corrosion of aluminium in an aqueous solution at pH 11 by succinic acid-Zn2+ system


The inhibition efficiency of succinic acid in contr olling corrosion of Aluminium in an aqueous solutio n at pH 11, in the absence and presence of Zn 2+ has been evaluated by weight loss method. The form ulation consisting of 250 ppm of succinic acid and 50 ppm of Zn 2+ has 95% corrosion inhibition efficiency. A synergi stic effect exits between succinic acid and Zn 2+ . The mechanistic aspects of corrosion inhibition h ave been evaluated by polarization study and AC impedance spectra. In the presence of inhibi tor , linear polarization resistance increases ;cor rosion current decreases; charge transfer resistance value increas es; impedance value increases and double large capa citance decreases . The protective film has been analyzed b y SEM and EDAX.