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Membrane Pd–7.70 wt % Lu Alloy for the Preparation and Purification of Hydrogen
- Source :
- Physics of Metals and Metallography. 122:54-59
- Publication Year :
- 2021
- Publisher :
- Pleiades Publishing Ltd, 2021.
-
Abstract
- The purity of hydrogen, which is an alternative energy carrier in powder sources of distributed energy resource systems and, in particular, is the feed stock for fuel cells, should be no less than 99.9999 vol % purity High-purity hydrogen can be prepared only via its separation as a result of selective diffusion through metallic membranes manufactured from specific membrane palladium-based alloys prepared in the form of thin foils. In the present work, the combination of deformation and annealings under different conditions is used to prepare the Pd–7.70 wt % Lu alloy in the form of foil 50 µm thick, whose specific hydrogen permeability is studied in the course of cyclic heating and cooling in a hydrogen atmosphere in a temperature range of 300–500°С. The Pd–7.70 wt % Lu membrane is shown to demonstrate high and stable hydrogen permeability. The evolution of the surface structure of the membrane in the course of its operation in the hydrogen atmosphere is studied by atomic force microscopy using the phase contrast mode.
- Subjects :
- 010302 applied physics
Materials science
Hydrogen
Diffusion
Alloy
chemistry.chemical_element
Atmospheric temperature range
engineering.material
Condensed Matter Physics
01 natural sciences
Metal
Membrane
chemistry
Chemical engineering
visual_art
0103 physical sciences
Materials Chemistry
engineering
visual_art.visual_art_medium
010306 general physics
FOIL method
Palladium
Subjects
Details
- ISSN :
- 15556190 and 0031918X
- Volume :
- 122
- Database :
- OpenAIRE
- Journal :
- Physics of Metals and Metallography
- Accession number :
- edsair.doi...........39fd6a8d5ce34e15d8496919f2549ae2