Adequate optimization of bcc-Nb phase in eutectic increases the hydrogen permeability.
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The volume fraction of eutectic in Nb30Ti35Ni35−xCox (x = 0…35) increases with x.
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The hydrogen permeability of Nb30Ti35Ni35−xCox (x = 0…35) increases with x.
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Cast eutectic Nb30Ti35Co35 exhibits a permeability of 2.65 × 10−8 mol H2 m−1 s−1 Pa−0.5.
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Hydrogen permeability of DS Nb30Ti35Co35 is much higher than that of cast one.
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