Evaluation of l-tyrosine mixed with sodium dodecyl sulphate or cetyl pyridinium chloride as a corrosion inhibitor for mild steel in 1 M HCl: experimental and theoretical studies

RSC Advances ◽  
2016 ◽  
Vol 6 (66) ◽  
pp. 61235-61248 ◽  
Author(s):  
Mosarrat Parveen ◽  
Mohammad Mobin ◽  
Saman Zehra
Keyword(s):  
Mild Steel ◽  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Steel Corrosion ◽  
Pyridinium Chloride ◽  
Cetyl Pyridinium Chloride ◽  
Inhibition Effect ◽  
Mild Steel Corrosion ◽  
Cetyl Pyridinium ◽  
Experimental And Theoretical Studies

The inhibition effect of l-tyrosine mixed with sodium dodecyl sulphate or cetyl pyridinium chloride on mild steel corrosion in HCl was studied.

scholarly journals Inhibitive Effect of Costus afer Extracts on Mild Steel Corrosion in Acidic Medium

2016 ◽  
Vol 7 ◽  
pp. 60-67
Author(s):  
Lebe A. Nnanna ◽  
Wisdom O. John ◽  
Tochukwu E. Esihe ◽  
Kelechi C. Denkoro ◽  
Victor I. Okparaku ◽  
...  
Keyword(s):  
Mild Steel ◽  
Room Temperature ◽  
Inhibition Efficiency ◽  
Gravimetric Method ◽  
Steel Corrosion ◽  
Corrosion Process ◽  
Inhibition Effect ◽  
A Value ◽  
Mild Steel Corrosion ◽  
Costus Afer

Inhibition effect of Costusafer on mild steel in 0.5 M HCl was studied using gravimetric method at room temperature. It was found out that Costusafer inhibited the corrosion of mild steel in the acidic environment and that the efficiency of inhibition increased as the concentration of the inhibitor in the environment increased. The data was used to test different isotherms and it suited the Langmuir isotherm. A value of -15.995 kJmol-1 was gotten for the ∆Goads. This value showed that the extracts of Costusafer inhibited the corrosion process through physiosorption mechanism. The high value of inhibition efficiency of the extract as the concentration increased in rationalized in terms of the increase in herteroatoms, saponnins and tannins which are present in the extract.

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