Corrosion Characteristics of 304 Stainless Steel in Sodium Chloride and Sulfuric Acid Solutions
Aliaa Abdelfatah, Ahmed M. Raslan, Lamiaa Z. Mohamed
Abstract
Corrosion behavior of austenitic stainless steel 304 (SS) in various concentrations of H 2 SO 4 and NaCl solutions was investigated using chemical and electrochemical techniques. Corrosion rate was measured by weight-loss and potentiodynamic polarization. The effects of acid concentrations and voltage scan rate were studied by cyclic voltammetry. Corrosion rate of 304 SS decreases with increasing NaCl concentrations. On the other hand, corrosion rate increasing with increasing the H 2 SO 4 concentrations. The surface morphology was characterized by SEM. The elemental analysis was examined by EDX and the elemental distribution by mapping of the corroded 304 SS in different media.
Topics & Concepts
Sulfuric acidCorrosionSodiumMetallurgyMaterials scienceChlorideNuclear chemistryChemistryCorrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability