Citation:
LI Xiang-Hong, DENG Shu-Duan, FU Hui. Corrosion Inhibition of Red Tetrazolium for Cold Rolled Steel in Hydrochloric Acid[J]. Chinese Journal of Applied Chemistry,
;2009, 26(9): 1075-1079.
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The inhibition effect of red tetrazolium on the corrosion of cold rolled steel(CRS) in 1.0~5.0 mol/L HCl was studied by mass loss and potentiodynamic polarization methods.Atomic force microscopy(AFM) was used to observe the CRS surface.The results show that neutral red tetrazolium was a good inhibitor for CRS,and the adsorption of red tetrazolium on the CRS surface follows Langmuir adsorption isotherm equation.Polarization curves show that red tetrazolium was a mixed-type inhibitor in hydrochloric acid.Based on the adsorption thermodynamic and kinetic parameters,the inhibitive mechanism is discussed.AFM results show that the introduction of red tetrazolium into HCl solution resulted in the formation of a compact and dense inhibitive film on the CRS surface.
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