ZrO2 addition in soda-lime aluminoborosilicate glasses containing rare earths: Impact on the network structure - Archive ouverte HAL
Article Dans Une Revue Journal of Alloys and Compounds Année : 2017

ZrO2 addition in soda-lime aluminoborosilicate glasses containing rare earths: Impact on the network structure

Résumé

The influence of increasing ZrO 2 content on the structural features of a rare earths (RE = Nd, La) bearing soda-lime aluminoborosilicate glass was investigated through a multi-spectroscopic approach (Raman, Zr-EXAFS, 29 Si, 11 B, 27 Al and 23 Na MAS NMR). Particular attention was paid to the modifications occurring in the glassy network and on the distribution of Na + and Ca 2+ ions. Zr 4+ ions were shown to be located in (ZrO 6) 2-sites, connected to the silicate network, and preferentially charge compensated by Na + ions. A favorable competition of Zr 4+ ions against RE 3+ ions and (BO 4)-entities for charge compensators was observed, but no effect was detected on the environment of (AlO 4)-(Daniel Caurant) 2 entities. This competition resulted in a modification of the RE 3+ ions environment with the ZrO 2 content that may affect their solubility in the glassy network.

Domaines

Chimie Matériaux
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Dates et versions

hal-02327715 , version 1 (22-10-2019)

Identifiants

Citer

Arnaud Quintas, Daniel Caurant, Odile Majérus, Pascal Loiseau, Thibault Charpentier, et al.. ZrO2 addition in soda-lime aluminoborosilicate glasses containing rare earths: Impact on the network structure. Journal of Alloys and Compounds, 2017, 714, pp.47-62. ⟨10.1016/j.jallcom.2017.04.182⟩. ⟨hal-02327715⟩
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