Potentiodynamic Polarization Behavior of Fe-25 Ni in (C1(-)) Containing IN H2SO4.
Abstract
The polarization behavior of a high purity Fe-25Ni was determined as a function of the chloride ion (Cl(-)) concentration in a 1NH2SO4 solution. The anodic Tafel slopes were increased while the cathodic Tafel slopes were unchanged by increases in the (Cl(-)) concentration. However, a parallel shift in the cathodic curve in the noble potential direction was noted. Except for the increase in the anodic Tafel slopes, the active portion of the polarization curves were unaffected by the presence of (Cl(-)) concentration. At concentrations between 300 and 400ppm rapid changes in the passive current density were observed. At concentrations greater than about 400 ppm, the passive state was no longer exhibited; dissolution of the alloy occurred continuously throughout the anodic polarization test. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1971
- Accession Number
- AD0732200
Entities
People
- Dale O. Condit
Organizations
- Air Force Research Laboratory