On the level of mechanical loss in metallic glasses
Metallic glass samples with compositions Zr<Subscript>65</Subscript>Al<Subscript>7.5</Subscript>Cu<Subscript>27.5</ Subscript> and Pd<Subscript>77</Subscript>Cu<Subscript>6</Subscript>Si<Subscript>17</Subs cript>, for which loss factors of up to 10<Superscript>-2</Superscript> have been reported, are reinvestigated with an electrostatic vibrating cantilever technique that detects dissipation factors tan δ as low as 10<Superscript>-4</Superscript>. It is found that tan δ ≈ 4×10<Superscript>-4</Superscript> is a typical value for these alloys well below T <Subscript> g </Subscript>, suggesting that previous results were limited by instrumental resolution. While aging the glasses increases their elastic moduli considerably, the measured loss factor is affected only marginally by thermal history. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2011
Year of publication: |
2011
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Authors: | Bedorf, D. ; Richert, R. ; Samwer, K. |
Published in: |
The European Physical Journal B - Condensed Matter and Complex Systems. - Springer. - Vol. 80.2011, 3, p. 325-329
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Publisher: |
Springer |
Saved in:
Online Resource
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