Hydrogen Permeation Measurements on Alumina |
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| Authors: | E Serra A Calza Bini G Cosoli L Pilloni |
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| Affiliation: | ENEA UTS MAT, CR Brindisi, 72100 Brindisi, Italy; ENEA UTS MAT, CR Casaccia, 00060 S.M. di Galeria Roma, Rome, Italy |
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| Abstract: | The aim of this work is to measure the hydrogen transport and solubility parameters in the commercial alumina. Measurements are conducted using a time-dependent permeation method over the temperature range 1273–1673 K with hydrogen driving pressures in the range 104–105 Pa (100–1000 mbar). A half-power pressure dependence (diffusion-limited permeation) of the permeation flux for alumina is observed. The Arrhenius expressions for the hydrogen permeability, diffusivity, and Sieverts' constant values obtained from a fitting to the whole temperature range are as follows: |
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