ChemInform Abstract: Influence of Acid Soluble Sulfide Inclusions on the Passivation Behavior of Austenitic Cr-Ni Stainless Steels.
Abstract
From potentiodynamic polarization measurements in 0.1 N H2SO4 solution it is concluded that acid soluble sulfide inclusions cathodically as well as anodically affect the polarization behavior of austenitic Cr-Ni-(Mo) stainless steels.
ChemInform Abstract
From potentiodynamic polarization measurements in 0.1 N H2SO4 solution it is concluded that acid soluble sulfide inclusions cathodically as well as anodically affect the polarization behavior of austenitic Cr-Ni-(Mo) stainless steels. These effects are attributed to alterations of the kinetics of both the anodic and cathodic partial processes of corrosion by H2S or HS- ions in the electrolyte originating from chemical dissolution of sulfide inclusions. Increasing amounts of H2S or HS- in the corrosive medium result in an increase in the hydrogen overvoltage accompanied by decrease in the cathodic Tafel slope and an increasing stimulation of the anodic metal dissolution reaction.
