The Reaction Interface in Reduction

  • Mei Chang
  • Lutgard C. De Jonghe
Part of the Materials Science Research book series (MSR, volume 14)


When an oxide such as cobalt ferrite is reacted with hydrogen, a porous metal scale will form topochemically from its surface. The pores in the metal scale permit the reducing gas to reach the reaction interface directly. At the pore bottoms the parent oxide is then destroyed by the reduction process, the oxygen is removed in the form of water vapor, and the cations that are produced at the pore bottoms are transported to the adjacent metal phase. The purpose of the present paper is to clarify the processes occurring at the metal/oxide reaction interface, and to determine which sub-processes are most important in determining the interface reaction rates.


Interface Reaction Volume Diffusion Activation Enthalpy Interface Diffusion External Mass Transfer 


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Copyright information

© Plenum Press, New York 1981

Authors and Affiliations

  • Mei Chang
    • 1
    • 2
  • Lutgard C. De Jonghe
    • 1
    • 2
  1. 1.Materials and Molecular Research DivisionLawrence Berkeley LaboratoryBerkeleyUSA
  2. 2.Department of Materials Science and Mineral EngineeringUniversity of CaliforniaBerkeleyUSA

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