Corrosion inhibition of carbon steel by some Schiff base compounds

doi:10.3724/SP.J.1095.2010.90501

Chinese Journal of Applied Chemistry ›› 2010, Vol. 27 ›› Issue (06): 716-720.DOI: 10.3724/SP.J.1095.2010.90501

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Corrosion inhibition of carbon steel by some Schiff base compounds

GUAN Lu-Xiong*, ZHAN Jing-Jing, OU Ye-Xiu

(College of Chemistry and Chemical Engineering,Central South University,Changsha 410083)

Received:2009-07-27 Revised:2009-10-11 Published:2010-06-10 Online:2010-06-10

Abstract

Abstract:

Inhibitory effects of two Schiff bases N,N′-bis(salicylidene)-1,2-ethylendiamine(SB-Ⅰ) and salcylidene-pyridine-2-yl-amine(SB-Ⅱ) on the corrosion of carbon steel in 1 mol/L HCl solution were studied via mass loss measurement method, polarization and electrochemical impedance spectroscopy. The results show that compounds SB-Ⅰ and SB-Ⅱ have fairly good inhibiting properties for carbon steel corrosion in hydrochloric acid with the best efficiencies of 85% and 92%, respectively, at 20 mmol/L additive concentration, and they belong to anodic inhibitors.

Key words: Schiff base, inhibitors, synthesis, hydrochloric acid, A3 carbon steel

CLC Number:

O646

GUAN Lu-Xiong*, ZHAN Jing-Jing, OU Ye-Xiu. Corrosion inhibition of carbon steel by some Schiff base compounds[J]. Chinese Journal of Applied Chemistry, 2010, 27(06): 716-720.

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Corrosion inhibition of carbon steel by some Schiff base compounds

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