Inhibition effect of butan-1-ol on the corrosion behavior of austenitic stainless steel (Type 304) in dilute sulfuric acid
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Elsevie
Abstract
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The electrochemical behavior of austenitic stainless steel (Type 304) in 3 M sulfuric acid
with 3.5% recrystallized sodium chloride at specific concentrations of butan-1-ol was investigated
with the aid of potentiodynamic polarization, open circuit measurement and weight loss technique.
Butan-1-ol effectively inhibited the steel corrosion with a maximum inhibition efficiency of 78.7%
from weight-loss analysis and 80.9% from potentiodynamic polarization test at highest concentration
studied. Adsorption of the compound obeyed the Freundlich isotherm. Thermodynamic calculations
reveal physiochemical interactions and spontaneous adsorption mechanism. Surface
characterizations showed the absence of corrosion products and topographic modifications of the
steel. Statistical analysis depicts the overwhelming influence and statistical significance of inhibitor
concentration on the inhibition performance
Keywords
T Technology (General), TJ Mechanical engineering and machinery