Advertisement

Thermal Desorption Spectra of PdHx System (0<x<0.9) in Different Samples: A Powder, a Foil and a Wire

  • A. Stern
  • A. Resnik
  • D. Shaltiel
  • S. R. Kreitzman
Part of the NATO Conference Series book series (NATOCS, volume 6)

Abstract

A preliminary report on the thermal desorption spectra of hydrogen in the PdHx system is presented for various initial hydrogen concentrations (0<xo<0.9) and for various samples: a powder, a thin foil and a wire. The results show a two-peak structure for the powder and the foil, and a structure that consists of two peaks and a shoulder for the wire. It is shown that in the powder and the foil the desorption rate is surface limited and the bulk protons are in equilibrium, whereas for the wire, bulk diffusion limits the desorption rate. Therefore, while a correlation between the spectra of the powder and the foil to the Pd-H phase diagram can be made, such a correlation for the wire is not readily attainable.

Keywords

Onset Temperature Desorption Rate Bulk Diffusion Thermal Desorption Spectroscopy Short Diffusion Distance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    M.H. Mendelsohn and D.M. Gruen, Mat. Res. Bull., 16, 1027 (1981)CrossRefGoogle Scholar
  2. 2.
    A. Stern, S.R. Kreitzman, A. Resnik, D. Shaltiel and V. Zevin, Solid State Commun., 40, 837 (1981).ADSCrossRefGoogle Scholar
  3. 3.
    J. Crank, “The Mathematics of Diffusion”, Clarendon Press, Oxford (1975)Google Scholar
  4. 4.
    W. Jost, “Diffusion in Solids, Liquids, Gases”, Academic Press Inc., Publishers, New York (1952).Google Scholar
  5. 5.
    J. Völkl and G. Alefeld, Diffusion of Hydrogen in Metals, in “Topics in Applied Physics”, Vol. 28, “Hydrogen in Metals I”, G. Alefeld and J. Völkl ed., Springer-Verlag, Berlin Heidelberg, New York (1978).Google Scholar
  6. 6.
    E.F.W. Seymour, R.M. Cotts and W.D. Williams, Phys. Rev. Lett. 35, 165 (1975).ADSCrossRefGoogle Scholar
  7. 7.
    E. Wicke and H. Brodowsky, Hydrogen in Palladium and Palladium Alloys, in “Topics in Applied Physics”, Vol. 29, “Hydrogen in Metals II”, G. Alefeld and J. Volkl ed., Springer-Verlag, Berlin Heidelberg, New York (1978).Google Scholar

Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • A. Stern
    • 1
  • A. Resnik
    • 1
  • D. Shaltiel
    • 1
  • S. R. Kreitzman
    • 1
  1. 1.Center of Energy and the Racah Institute of PhysicsHebrew University of JerusalemJerusalemIsrael

Personalised recommendations