�ber die Wirkung von Enterocin auf Enterokokken

Brandis, H.; Thofern, E

doi:10.1007/bf00632938

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Diffusion Coefficients Of Hydrogen Deuterium and Tritium In1

Diffusion Of Hydrogen In Liquid Metals1

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1972

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“…Thus, D(H)/D(D) should be invariant with temperature and should have the value 1.41; D(H)/D(T) the constant value 1. 73. The fact that Q does vary for these isotopes diffusing in Ni and that the ratios of the Do's (see Table 2) are not these ideal values shows that modification of the simple theory must be made.…”

Section: Diffusion Coefficients Of Hydrogen Deuterium and Tritium Inmentioning

confidence: 94%

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Diffusion of hydrogen in metals

Birnbaum

Wert

1972

Ber Bunsenges Phys Chem

110

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Published measurements of the diffusion of hydrogen in fcc metals are summarized with particular emphasis on the isotope effect. The observations are generally consistent with the usual rate theory model but with the energy levels in both the equilibrium site and the saddle point quantized according to an Einstein oscillator. Not all data fit this scheme, however, diffusion in Pd being a notable exception. Published work for the bcc metals shows much less consistency; surface effects and internal trapping at defects and impurities are apparently of over‐riding importance. A summary of measurements of diffusion of hydrogen in liquid metals is also made.

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Section: Diffusion Coefficients Of Hydrogen Deuterium and Tritium Inmentioning

confidence: 94%

“…The D values are within a factor 2 of each other near cm2/sec. Oxygen, nitrogen and carbon diffuse about 10 times more slowly, cm'jsec [72][73][74]761. Self diffusion in liquid iron is about two orders of magnitude less than that, near cm2/sec [77].…”

Section: Diffusion Of Hydrogen In Liquid Metalsmentioning

confidence: 99%