Anomalous Behavior of Diffusion Coefficients of Hydrogen and Deuterium in High Content Palladium Hydride and Deuteride

  • S. Majorowski
  • B. Baranowski
Part of the NATO Conference Series book series (NATOCS, volume 6)


Fick’s diffusion coefficients of hydrogen and deuterium in palladium hydride and deuteride were determined under high equilibrium pressures of gaseous hydrogen and deuterium using an electrical resistance relaxation method.The measurements were made for pressures ranging from 1 MPa to 1 GPa (10 to 10000 atm) and temperatures ranging from 208 to 338 K.This covered the H,D/Pd concentration range from about 0.8 to nearly 1.Einstein’s diffusion coefficients were calculated and the activation volumes and activation enthalpies were evaluated.An attempt is made to interpret the anomalous behavior of the diffusion coefficients in the low temperature range.The results are presented in a compact formula.


Diffusion Coefficient Activation Volume Anomalous Behavior Metallic Palladium Compact Formula 
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Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • S. Majorowski
    • 1
  • B. Baranowski
    • 1
  1. 1.Institute of Physical ChemistryPolish Academy of SciencesWarsawPoland

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