DISSOLUTION BEHAVIOR OF Fe AND Ni IN THE ACTIVE REGION OF DISSOLUTION IN SULFURIC ACID

Abstract

The dissolution characteristics of high purity Fe and high purity Ni in H2SO4 at 25C were investigated using atomic absorption analysis. The specimens were dissolved potentiostatically and samples of solution were analyzed for Fe and Ni ions. The analyses showed that the dissolution was a logarithmic function of time, the exponent of time being about 1.0 for Fe and 0. 7 for Ni. Anodic polarization curves indicated that dissolution of Fe was larger than for Ni. The mechanism for Fe involved two electrons; whereas, for Ni it involved three electrons. Determination of zero-order rate constants indicated that the constants for both Fe and Ni increase with potential, the constant for Fe at a given potential always being much larger than the constant for Ni.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1969
Accession Number
AD0687866

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
  • Alloys
  • Anodic Polarization
  • Cells
  • Corrosion
  • Department Of Defense
  • Electrochemical Kinetics
  • Electrodes
  • Equations
  • Kinetics
  • New York
  • Polarization
  • Security
  • Stress Corrosion
  • United States

Readers

  • Calculus or Mathematical Analysis
  • Surface Engineering/Surface Coating Technology.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics