Dynamic Segregation in Multicomponent Oxides Under Chemical Potential Gradients

  • G. Petot-Ervas
Part of the NATO ASI Series book series (NSSE, volume 173)


Reactivity and demixing tendency of multicomponent oxides are discussed on the basis of a formal treatment of matter transport under oxygen potential gradients. The present study shows how the dynamic segregation of cations near interfaces takes place in p-type semi-conducting oxides. This effect has been considered for different cases encountered depending on the range of stability of initially homogeneous multicomponent oxides. Experimental examples illustrate the importance of these phenomena.


Oxygen Partial Pressure Oxide Scale Reduction Kinetic Chemical Potential Gradient Matter Transport 
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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • G. Petot-Ervas
    • 1
  1. 1.CNRS, Laboratoire d’Ingénierie des Matériaux et des Hautes PressionsUniversité Paris-NordVilletaneuseFrance

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