Permeability of Metals and Enameled Metals to Hydrogen

Abstract

This report has been distributed according to the category Metals, Ceramics, and Materials" as given in "Standard Distribu tion Lists for Unclassified Scientific and Technical Reports" TID-4500 (16th Ed.), December 15, I960. A total of 620 pages was printed.

Hydrogen Isotopes Permeation in Clean or Unoxidized FeCrAl Alloys: A Review

“…The reduction was thought to be primarily related to the presence of very thin residual oxide films that were more tenacious with (because of) the higher aluminum content. In a more recent report, Urabe et al [96] gave permeability parameters for Type 430 and considered the response to be close enough to both their Ce-ODS material (a modified FeCrAl alloy) and to that of an earlier study on Type 430 steel at much higher temperatures [Rudd and Vetrano 1961]. Although their curve for Type 430 steel appears to be consistent, yet it is about 33 pct higher than that of Rudd and Vetrano [114] extrapolated down from the higher temperature (shown in Figure 2).…”

“…In a more recent report, Urabe et al [96] gave permeability parameters for Type 430 and considered the response to be close enough to both their Ce-ODS material (a modified FeCrAl alloy) and to that of an earlier study on Type 430 steel at much higher temperatures [Rudd and Vetrano 1961]. Although their curve for Type 430 steel appears to be consistent, yet it is about 33 pct higher than that of Rudd and Vetrano [114] extrapolated down from the higher temperature (shown in Figure 2). Also, the data from Huang et al [61] on Type 430 steel shows the lowest activation energy although the permeability values for the temperature range fall within the general band for non-430 materials; this may be related to the fact that only this data is based on Pd-coated, clean surface condition.…”