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Thermal desorption spectroscopy (TDS) method for hydrogen desorption characterization (I): theoretical aspects

Authors
Journal
Journal of Alloys and Compounds
0925-8388
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/s0925-8388(01)01625-5
Keywords
  • Thermal Desorption Spectroscopy
  • Metal Hydrogen Systems
  • Mathematical Model
  • Desorption Kinetics Of H2
  • Diffusion Of H2
  • Surface Effects

Abstract

Abstract We present a theoretical study of thermal desorption spectroscopy applied to the characterization of hydrogen desorption kinetics from hydride forming materials. We propose a model that considers bulk and surface processes during desorption in the solid solution+hydride field of a metal–hydrogen system. We consider as possible rate limiting steps: diffusion, phase transformation, bulk to surface passage and two-atom recombination on the surface of the sample.

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