Characterization of Zr-Cu Base Metallic Glasses by means of Hydrogen Internal Friction Peak

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The hydrogen internal friction peak in Zr₅₀-metallic glasses (Zr₅₀Cu₅₀, Zr₅₀Cu₄₀Al₁₀ and Zr₅₀Cu₃₅Al₁₀Ni₅) was studied. The hydrogen internal friction peak was shifted exponentially to lower temperatures with increasing hydrogen concentration similarly to other Zr-Cu base metallic glasses reported in the literature. The peak height increased in proportion to the square-root of hydrogen concentration. These results were discussed in the view point of the hydrogen induced structural relaxation in these metallic glasses.