Corrosion Inhibition of Steel by Lead Pigments: The Steel–Lead Galvanic Couple in Acetate Solutions

CORROSION ◽  
1989 ◽  
Vol 45 (8) ◽  
pp. 631-636 ◽  
Author(s):  
J. I. Mickalonis ◽  
H. Leidheiser
Keyword(s):  
Corrosion Inhibition ◽  
Galvanic Couple

scholarly journals Corrosion Inhibition of the Galvanic Couple Copper-Carbon Steel in Reverse Osmosis Water

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Irene Carrillo ◽  
Benjamín Valdez ◽  
Roumen Zlatev ◽  
Margarita Stoycheva ◽  
Michael Schorr ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Reverse Osmosis ◽  
Corrosion Inhibition ◽  
Heat Exchangers ◽  
Electrochemical Impedance ◽  
Galvanic Corrosion ◽  
Electrochemical Behaviour ◽  
Open Circuit ◽  
X Ray ◽  
Galvanic Couple

The purpose of this paper is to evaluate the electrochemical behaviour of corrosion inhibition of the copper-carbon steel galvanic couple (Cu-CS), exposed to reverse osmosis water (RO) used for rinsing of heat exchangers for heavy duty machinery, during manufacture. Molybdate and nitrite salts were utilized to evaluate the inhibition behaviour under galvanic couple conditions. Cu-CS couple was used as working electrodes to measure open circuit potential (OCP), potentiodynamic polarization (PP), and electrochemical impedance spectroscopy (EIS). The surface conditions were characterized by scanning electron microscopy (SEM) and electron dispersive X-ray spectroscopy (EDS). The most effective concentration ratio between molybdate and nitrite corrosion inhibitors was determined. The morphological study indicated molybdate deposition on the anodic sites of the galvanic couple. The design of molybdate-based corrosion inhibitor developed in the present work should be applied to control galvanic corrosion of the Cu-CS couple during cleaning in the manufacture of heat exchangers.

Corrosion inhibition of Mg90 alloy by compositions based on sodium oleate. Part II. Chelants and trialkoxysilanes

2020 ◽  
pp. 18-24
Author(s):  
V.A. Ogorodnikova ◽  
◽  
Yu.I. Kuznetsov ◽  
A.A. Chirkunov ◽  
◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Sodium Oleate

Adsorption and corrosion inhibition characteristics of two medicinal molecules

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Hydrochloric Acid ◽  
Corrosion Rate ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Half Life ◽  
Thermodynamic Data ◽  
Inhibition Efficiency ◽  
Gravimetric Method ◽  
Corrosive Environment ◽  
Corrosion Inhibition Efficiency

The corrosion inhibition characteristics of two medicinal molecules phenylalanine and rutin on mild steel in 1.0M Hydrochloric acid were evaluated using gravimetric method. Corrosion inhibition efficiency of 83.78 and 90.40 % was obtained respectively after seven days. However, phenylalanine showed weak accumulative higher corrosion inhibition efficiency. The presence of both molecules in the corrosive environment reduced the corrosion rate constant and increased the material half-life. Thermodynamic data calculated suggests a spontaneous adsorption of the molecules on the mild steel’s surface.

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