Impact of magnesium on the structure of aluminoborosilicate glasses: A solid-state NMR and Raman spectroscopy study

Bisbrouck N, Bertani M, Angeli F, Charpentier T, de Ligny D, Delaye JM, Gin S, Micoulaut M (2021)


Publication Type: Journal article

Publication year: 2021

Journal

DOI: 10.1111/jace.17876

Abstract

Seven magnesium-containing aluminoborosilicate glasses, with three to five oxides, have been studied through comprehensive multinuclear solid-state NMR (B-11, Al-27, Si-29, Na-23, O-17, and Mg-25) and Raman spectroscopy. The progressive addition of cations and the substitution of sodium and calcium by magnesium illuminate the impact of magnesium on the glass structure. The proportion of tri-coordinated boron drastically increased with magnesium addition, demonstrating the poor charge-compensating capabilities of magnesium in tetrahedral boron units. Oxygen-17 NMR showed the formation of mixing sites containing both Na and Mg near nonbridging oxygen sites. Furthermore, a high magnesium content appears to result in the formation of two subnetworks (boron and silicon rich) with different polymerization degrees as well as to promote the formation of high-coordination aluminum sites (Al[V] and Al[VI]). Finally, magnesium coordination ranging from 4 to 6, with a mean value shifting from 5 to 6 along the series, suggests that magnesium might endorse an intermediate role in these glasses.

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APA:

Bisbrouck, N., Bertani, M., Angeli, F., Charpentier, T., de Ligny, D., Delaye, J.-M.,... Micoulaut, M. (2021). Impact of magnesium on the structure of aluminoborosilicate glasses: A solid-state NMR and Raman spectroscopy study. Journal of the American Ceramic Society. https://doi.org/10.1111/jace.17876

MLA:

Bisbrouck, Nicolas, et al. "Impact of magnesium on the structure of aluminoborosilicate glasses: A solid-state NMR and Raman spectroscopy study." Journal of the American Ceramic Society (2021).

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