Permeation characteristics of some iron and nickel based alloys

Journal Article · Sat Jun 15 04:00:00 EDT 1985 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.335261· OSTI ID:5626316

Mitchell, D J; Edge, E M

The permeation characteristics of deuterium in several iron and nickel based alloys were measured by the gas phase breakthrough technique in the temperature range 100 to 500 /sup 0/C with applied pressures ranging from 10 Pa to 100 kPa. The restriction of the gas flux imposed by surface oxides was modeled in order to evaluate the effects of surface oxide retardation of the gas flux on the effective values of the deuterium permeabilities and diffusivities in the alloys. The most permeable alloys were 430 and 431 stainless steels. The next most permeable alloy was Monel K-500, which exceeded the permeability of pure Ni by more than a factor of five at room temperature. The alloys with permeabilities less than pure Ni were, in order of decreasing permeability: the Inconels 625, 718, and 750, the Fe-Ni-Co glass-sealing alloys Kovar and Ceramvar, and the 300-series stainless steels. Deuterium trapping within the alloys appeared to influence the values of bulk diffusivities, which were not correlated with either the permeabilities or the chemical compositions of the alloys.

• Research Organization: Sandia National Laboratories, Albuquerque, New Mexico 87185
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5626316
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 57:12; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
ATOM TRANSPORT
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
CHROMIUM STEELS
COBALT ALLOYS
COPPER ALLOYS
CORROSION RESISTANT ALLOYS
DEUTERIUM
DIFFUSION
FLUID FLOW
GAS FLOW
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HYDROGEN ISOTOPES
INCONEL 625
INCONEL 718
INCONEL ALLOYS
INCONEL X750
IRON ALLOYS
IRON BASE ALLOYS
ISOTOPES
KOVAR
LIGHT NUCLEI
MANGANESE ADDITIONS
MANGANESE ALLOYS
MATERIALS
MEMBRANES
MOLYBDENUM ALLOYS
MONEL
NEUTRAL-PARTICLE TRANSPORT
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
NUCLEI
ODD-ODD NUCLEI
PERMEABILITY
RADIATION TRANSPORT
STABLE ISOTOPES
STAINLESS STEEL-430
STAINLESS STEEL-431
STAINLESS STEELS
STEELS
TANTALUM ALLOYS
TITANIUM ALLOYS
TRAPPING