Structural changes between soda-lime silicate glass and melt | INSTITUT DE PHYSIQUE DU GLOBE DE PARIS

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  Structural changes between soda-lime silicate glass and melt

Type de publication:

Journal Article

Source:

Journal of Non-Crystalline Solids, Volume 357, Ticket 3, p.926-931 (2011)

ISBN:

0022-3093

Numéro d'accès:

ISI:000288232500022

URL:

http://www.sciencedirect.com/science/article/pii/S0022309310007799

Mots-clés:

UMR 7154 ; Minéralogie ; Structure; Silicate; Neutron scattering ;

Résumé:

Neutron diffraction has been used to study the structure of a glass and melt of composition 75SiO(2)-15Na(2)O-10CaO. RMC modeling of the neutron and X-ray diffraction data for the glass allowed the determination of the Na and Ca environment. The structure has been investigated at 300K, just below the glass transition at 823 K and in the melt at 1273 K The short range order does not present important modifications with temperature while significant reorganization appears at the medium range order. These latter changes can be associated with the Si and O pairs and indicate the relaxation of the silicate network. This indicates that the glass formation involved structural rearrangement during cooling. (C) 2010 Elsevier B.V. All rights reserved.

Notes:

Cormier, Laurent Calas, Georges Beuneu, Brigitte