Diffusivity of hydrogen and deuterium at low concentration in Fe /SUB 0. 5/ Ti /SUB 0. 5/
The diffusion coefficients of hydrogen and deuterium were measured in the solid solution phase Fe /SUB 0.5/ Ti /SUB 0.5/ H /SUB x/ /D /SUB x/ (x<0.03) in an absorption/desorption experiment with palladium coated bulk samples. The pressure and temperature ranges covered were 1 to 120 bar and 370 to 800 K, respectively. For x ..-->.. 0, the diffusion coefficients obey Arrhenius laws. They are (in cm/sup 2/ per second with T in K): 10.1 X 10/sup -4/ X exp(-5890/T) and 5.5 X 10/sup -4/ X exp(-5710/T) for hydrogen, 8.2 X 10/sup -4/ X exp(-6080/T) and 5.5 X 10/sup -4/ X exp(-5980/T) for deuterium, as measured during absorption and desorption, respectively. The pick-up and release of hydrogen by uncoated samples was controlled predominantly by surface effects.
- Research Organization:
- Daimler Benz AG, Stuttgart
- OSTI ID:
- 6536194
- Journal Information:
- Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 14A:8; ISSN MTTAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360104* -- Metals & Alloys-- Physical Properties
ABSORPTION
ALLOYS
ARRHENIUS EQUATION
DESORPTION
DEUTERIUM
DIFFUSION
ELEMENTS
EQUATIONS
HIGH TEMPERATURE
HYDROGEN
HYDROGEN ISOTOPES
IRON ALLOYS
ISOTOPES
LIGHT NUCLEI
MEDIUM PRESSURE
METALS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
PALLADIUM
PERMEABILITY
PLATINUM METALS
QUANTITY RATIO
SORPTIVE PROPERTIES
STABLE ISOTOPES
SURFACE PROPERTIES
TITANIUM ALLOYS
TRANSITION ELEMENTS