Environment and fracture. [Fe/sub 40/Ni/sub 40/P/sub 14/B/sub 6/]
A study of hydrogen transport through the glassy metal alloy Fe/sub 40/Ni/sub 40/P/sub 16/B/sub 4/ is reported. A thin layer of electrodeposited palladium eliminated surface impedances to hydrogen entry and exit. Sievert's law behavior was observed over the pressure (10/sup 3/ to 10/sup 5/Pa) and temperature (313 to 353/sup 0/K) ranges studied. An excellent fit to permeation transients was obtained from numerical solution of Fick's diffusion equation without trapping. Diffusivities derived from least squares fitting of transients were in good agreement with those obtained from time lag measurements. The results were not influenced by trapping, as within the concentration range studied, diffusivities were not influenced by concentration. Permeating measurements on stressed iron membranes established that the phenomenological partial atomic volumes of hydrogen and deuterium are equal.
- Research Organization:
- Cornell Univ., Ithaca, NY (USA). Dept. of Materials Science and Engineering
- DOE Contract Number:
- AC02-76ER03166
- OSTI ID:
- 6943864
- Report Number(s):
- DOE/ER/03166-34; COO-3166-34; ON: DE84011454
- Country of Publication:
- United States
- Language:
- English
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