A method was used, for the measurement of gas diffusion in liquid metals, in which the liquid metal was situated on top of a ceramic diaphragm. The porosity and material of the diaphragm were selected so that the melt could not enter it under the existing pressure difference. The method was used for the determination of H diffusion by using a diffusion pump to remove H from the lower side of the diaphragm and introduce it into a gas chromatograph for quantitative analysis. At 1376 to 1634K, the data could be described by:

D (cm2/s) = 5.12 x 10-3 exp[-5.9(kcal/mol)/RT]

P.Sigrist, H.K.Feichtinger, B.Marincek: Zeitschrift für Physikalische Chemie, 1977, 107[2], 211-8