The inhibition of 4-(20-amino-50-methylphenylazo) antipyrine on corrosion of mild steel in HCl solution

S.S. Abd El Rehima, Ibrahim, Magdy, K.F. Khalid,

Abstract


The effect of 4-(20-amino-50-methylphenylazo) antipyrine (AMPA) on the corrosion of mild steel in a 2MHCl solution was studied usingweight loss and potentiodynamic polarization techniques. All of the data reveal that AMPA acts as an inhibitor in the acid environment;furthermore, polarization data show that the compound behaves as a mixed-type inhibitor. It was found that the inhibition efficiency
increases with an increase in AMPA concentration but decreases with an increase in temperature. Flory–Huggins adsorption isotherm and El Awady thermodynamic–kinetic model fit the experimental data of the studied compound. Thermodynamic parameters for corrosion and adsorption processes were obtained from experimental data of the temperature studies.


Other data

Title The inhibition of 4-(20-amino-50-methylphenylazo) antipyrine on corrosion of mild steel in HCl solution
Authors S.S. Abd El Rehima ; Ibrahim, Magdy ; K.F. Khalid 
Keywords 4-(20-amino-50-methylphenylazo) antipyrine; Corrosion inhibition; Mild steel; Adsorption isotherms; Hydrochloric acid solution
Issue Date 2001
Publisher Elsevier
Journal Materials Chemistry and Physics 
URI http://research.asu.edu.eg/handle/123456789/169001

Files in This Item:

File Description SizeFormat Existing users please Login
Antipyrine.pdf213.24 kBAdobe PDF    Request a copy
Recommend this item
Page have 10 view


Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.