The Effect of Chloride Ions on the Dissolution Behavior of Fe-Ni Alloys

Abstract

The potentiostatic dissolution behavior of Fe-25Ni was studied to determine the effect of (Cl(-)) ion additions in IN H2SO4 at 25C. Specimens were dissolved at four potentials in the active and passive ranges and at three (Cl(- )) concentrations where large changes in dissolution behavior were expected. Current-time behavior, specimen weight change, and solution analysis for Fe and Ni were determined to characterize the dissolution behavior of the alloy. Current-time behavior and post-test surface characterization indicated that pitting occurred at all potentials and (Cl(-)) concentrations. Atomic absorption analysis for Fe and Ni in the solutions indicated that (Cl(-)) has no effect in the active dissolution of either component, increases in (Cl(-)) increase the dissolution of each in the passive range, and no enrichment or preferential dissolution of either component occurred under any exposure condition.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1972
Accession Number
AD0751258

Entities

People

  • Dale O. Condit

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Absorption
  • Air Force
  • Air Force Facilities
  • Anodic Polarization
  • Chlorides
  • Corrosion
  • Department Of Defense
  • Government Procurement
  • Governments
  • Linear Regression Analysis
  • Polarization
  • Regression Analysis
  • Security
  • Stress Corrosion
  • Stress Corrosion Cracking
  • United States
  • United States Government

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Structural Health Monitoring of Composite Structures.
  • Thin Film Deposition Science.