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Diffusion Analysis Of Hydrogen-Desorption MeasurementsDistribution of hydrogen in metal explains observed desorption rate. Report describes application of diffusion theory to anaylsis of experimental data on uptake and elimination of hydrogen in high-strength alloys of 25 degree C. Study part of program aimed at understanding embrittlement of metals by hydrogen. Two nickel-base alloys, Rene 41 and Waspaloy, and one ferrous alloy, 4340 steel, studied. Desorption of hydrogen explained by distribution of hydrogen in metal. "Fast" hydrogen apparently not due to formation of hydrides on and below surface as proposed.
Document ID
19880000587
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Danford, Merlin D.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Date Acquired
August 13, 2013
Publication Date
December 1, 1988
Publication Information
Publication: NASA Tech Briefs
Volume: 12
Issue: 11
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
MFS-27142
Accession Number
88B10587
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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