Paper Information

Journal:   JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS)   DECEMBER 2010 , Volume 7 , Number 4; Page(s) 799 To 806.
 
Paper: 

CORROSION INHIBITION OF 302 STAINLESS STEEL WITH SCHIFF BASE COMPOUNDS

 
 
Author(s):  HOSSEINI S.M.A.*, AZIMI A., SHEYKH SHOAEI I., SALARI M.
 
* DEPARTMENT OF CHEMISTRY, FACULTY OF SCIENCE, SHAHID BAHONAR UNIVERSITY OF KERMAN, KERMAN 76169, IRAN
 
Abstract: 

The effects of 2, 2'- [bis-N (4-cholorobenzaldimin)] -1, 1'-dithio (BCBD) and bis- (2-aminophenyl) disulphide (BAPD) on the corrosion behavior of 302 stainless steel in 0.5 M sulfuric acid solution as corrosive medium were investigated using weight loss and potentiostatic polarization techniques. Some corrosion parameters such as anodic and cathodic Tafel slopes, corrosion potential, corrosion current density, surface coverage degrees and inhibition efficiencies were calculated. The polarization measurements indicated that the inhibitors were of mixed type which inhibited corrosion by parallel adsorption on the surface of stainless steel due to the presence of more than one active centre in the inhibitor molecule. The adsorption followed Langmuir adsorption isotherm. The activation energy and thermodynamic parameters were calculated at different temperatures. Results showed that BCBD had a higher inhibition efficiency compared with BAPD.

 
Keyword(s): CORROSION, SULFURIC ACID, STAINLESS STEEL 302, BCBD, BAPD (AS AN INHIBITOR)
 
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