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Title: Study of Schiff’s bases as surface modifiers for corrosion protection of copper in sulphuric acid
Authors: Achary, Ganesha
Sachin, H P
Naik, Y Arthoba
Venkatesha, T V
Keywords: Schiff base
Surface modifier
Copper corrosion
Sulphuric acid
Issue Date: Jan-2007
Publisher: CSIR
IPC CodeC07C251/00, C23F11/00
Abstract: Surface modification of copper by newly synthesised Schiff’s bases, N- [(1E)-2-furylmethylene]-N-phenylamine (FA), 3-{[(1E)-2-furylmethylene] amino} phenol (FAP), 4-{[(1E)-2-furylmethylene] amino} benzoic acid (FAB) and 2-{(E)-[(3-hydroxyphenyl) imino] methyl} phenol (SAP), in 0.5 M sulphuric acid solution was investigated. The corrosion behavior of surface treated copper specimens was tested by galvanostatic polarization technique. The effect of concentration of Schiff’s bases in the treatment bath, treatment time and temperature of the corrosive medium on the corrosion protection efficiency of Schiff’s bases was investigated. Among the compounds studied, the protective film formed by FAB showed maximum protection efficiency. The inhibitive action of Schiff’s bases was due to their adsorption and consequent growth of the protective film on the metal surface. The inhibitive effectiveness depended strongly on the molecular structure of the Schiff’s base. The interaction of the compounds with the metal surface was confirmed by FTIR technique. The SEM studies showed the modification of copper surface due to the adsorption of Schiff’s bases.
Page(s): 16-21
ISSN: 0971–457X
Source:IJCT Vol.14(1) [January 2007]

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