THE THERMODYNAMICS OF CORROSION IN MOLTEN CARBONATES: APPLICATION OF E-PCO2 DIAGRAMS

Abstract

The corrosion of metals in fused carbonates is discussed in terms of a diagrammatic presentation of the thermodynamic data. Diagrams are plotted of E versus pCO2, where E is the redox potential of the system, and pCO2 = -log (CO2) . Each diagram is divided into three regions which mark the limits of stability at unit activity of the pure metal, metal oxide, and liquid metal carbonate. In the oxide region the metal may become passivated, but this depends on structural factors and requires experimental confirmation. The electrochemical series in molten carbonates is presented, and the significance of pCO2 in relation to acid-base behavior is discussed. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1964
Accession Number
AD0449958

Entities

People

  • George J. Janz
  • Malcolm D. Ingram

Organizations

  • Rensselaer Polytechnic Institute

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkali Metals
  • Carbon Dioxide
  • Chemical Synthesis
  • Chemistry
  • Dissociation
  • Electrodes
  • Energy
  • Iron
  • Material Degradation Processes
  • Materials
  • Materials Science
  • Military Research
  • New York
  • Oxides
  • Stainless Steel
  • Standards
  • Thermodynamics

Readers

  • Analytical Chemistry
  • Business Analytics
  • Materials Science and Engineering.