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Article Dans Une Revue Journal of Chemical Physics Année : 2014

A reconstructive polyamorphous transition in borosilicate glass induced by irreversible compaction

Résumé

Understanding the response of glasses to high pressure is of key importance for clarifying energy-dissipation and the origin of material damage during mechanical load. In the absence of shear bands or motile dislocations, pressure-induced deformation is governed by elastic and inelastic structural changes which lead to compaction of the glass network. Here, we report on a pressure-induced reconstructive amorphous-amorphous transition which was detected in sodium borosilicate glass by Raman and Brillouin scattering. The transition occurs through the formation of four-membered danburite-type rings of BO4 and SiO4-tetrahedra. We suggest that the inelastic pressure-resistance is governed by the Si-O-Si-backbone of the mixed borosilicate network. We further show that compaction is accompanied by increasing structural homogeneity and interpret this as a universal phenomenon in non-crystalline materials.

Dates et versions

hal-02311242 , version 1 (10-10-2019)

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Citer

S. Fuhrmann, Thierry Deschamps, Bernard Champagnon, L. Wondraczek. A reconstructive polyamorphous transition in borosilicate glass induced by irreversible compaction. Journal of Chemical Physics, 2014, 140, pp.054501. ⟨10.1063/1.4863348⟩. ⟨hal-02311242⟩
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