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The Effect of BIMGCS12-3 as the Inhibitor for the Corrosion of Mild Steel in 1M Vitriolic Acid

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Abstract:

The effect of propanediyl-α, ω-bis-(N-dodecyl benzimidazole ammonium bromide), (abbreviated as BIMGCS12-3)， as the inhibitor for the corrosion of mild steel in 1M vitriolic acid was tested. It was found by Tafel polarization curves that BIMGCS12-3 as mixed type inhibitor adsorbed on the mild steel surface forming a protecting film. EIS measurements were carried out in a frequency range of 100kHz to 10mHz with amplitude of 5mV using ac signals at open circuit potential. Changes in impedance parameters (charge transfer resistance, Rct, and double layer capacitance, Cdl) were indicative of the feasibility of BIMGCS12-3 as excellent mild steel corrosion inhibitor in 1M sulfuric acid. Surface morphology of the specimens was examined by SEM.

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Periodical:

Advanced Materials Research (Volume 549)

Pages:

449-452

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.549.449

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Online since:

July 2012

Authors:

Yong Ming Sun

Keywords:

Corrosion Inhibitor, Mild Steel, Vitriolic Acid

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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