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Poster De Conférence Année : 2019

Strain rate sensitivity of germanium-selenium glasses

Gwenole Trenvouez
Cédric Bernard
Mariette Nivard
Vincent Keryvin
  • Fonction : Auteur
  • PersonId : 950695
Jean-Pierre Guin

Résumé

As describe in a previous publication of Su and al. [Su2013], we determine by constant strain rate indentation path the power law’s creep exponent of low T g binary chalcogenide glasses (Se and Ge-Se). We made this choice of composition for the various atomic structures taken by Ge-Se glasses when the composition is modified. Tests have been performed at room temperature (25 ± 0.5 ̊C). Results gives a good agreement with the literature for the selenium sample whereas results over Ge-Se glasses leads to link creep behavior and atomic glass structure. Furthermore, analysis of atomic force microscopy indentation pictures allowed us to identify a link between glass composition and strain rate sensibility. The most sensitive glass compositions are near mechanical percolation threshold composition.
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Dates et versions

hal-02157078 , version 1 (15-06-2019)

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  • HAL Id : hal-02157078 , version 1

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Gwenole Trenvouez, Cédric Bernard, Mariette Nivard, Vincent Keryvin, Jean-Pierre Guin. Strain rate sensitivity of germanium-selenium glasses. 25th International Congress on Glass (ICG 2019), Jun 2019, Boston, United States. . ⟨hal-02157078⟩
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