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

Abstract

The hydrogen internal friction peak in Zr 50 -metallic glasses (Zr 50 Cu 50 , Zr 50 Cu 40 Al 10 and Zr 50 Cu 35 Al 10 Ni 5 ) 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.

Mechanical Spectroscopy Study on the Light Soaking Effect on Hydrogenated Amorphous Silicon

“…6 in [6] too). The 135 K peak is much broader than a single relaxation peak, suggesting that the outline of the low-temperature internal friction is indicative of the strength of the constituent relaxations as suggested for the hydrogen internal friction in amorphous (a-) alloys [12]. That is, the hydrogen Fig.…”

Inhibition of Electropulsing Nanocrystallization in Amorphous ZrCu under Helium Atmosphere

“…31) On the other hand, it was reported that hydrogens in the amorphous alloys induced a large internal friction peak below room temperature. 32) The effect of He on nanocrystallization is reversible under the He pressure as shown in Fig. 4.…”

Hydrogen and Zr-based metallic glasses: Gas/solid absorption process and structure evolution

“…They proposed a sequential filling by hydrogen atoms of pre-existing sites of different energies, for Zr-Ni alloys the sequence of site filling is Zr 4 then Zr 3 Ni then Zr 2 Ni 2 and so on. Nevertheless, several authors reported experimental measurements that are incompatible with a "static" random-alloy model [20][21][22][23]. They underlined that the initial atomic configuration of the amorphous alloy is not frozen and can evolve in the presence of hydrogen.…”