Accession Number : AD0449958


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


Corporate Author : RENSSELAER POLYTECHNIC INST TROY NY


Personal Author(s) : Ingram, Malcolm D ; Janz, George J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/449958.pdf


Report Date : Oct 1964


Pagination or Media Count : 32


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)


Descriptors :   *METALS , STABILITY , ELECTROCHEMISTRY , VOLTAGE , IRON , OXIDES , PLATINUM , NICKEL , GOLD , DECOMPOSITION , SILVER , OXIDATION REDUCTION REACTIONS , ALKALI METAL COMPOUNDS , EUTECTICS


Subject Categories : Adhesives, Seals and Binders


Distribution Statement : APPROVED FOR PUBLIC RELEASE