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Effect of network connectivity on behavior of synthetic Broborg Hillfort glasses

Published

Author(s)

José Marcial, Maria Cicconi, Carolyn Pearce, Jaroslav Kloužek, James Neeway, Richard Pokorny, Miroslava Vernerova, John McCloy, Emily Nienhuis, Rolf Sjoblom, Jamie Weaver, Russell Hand, Pavel Hrma, Albert Kruger

Abstract

There is wide industrial interest in developing robust models of long-term (>100years) glass durability. Archeological glass analogs, glasses of similar composition, and alteration conditions to those being tested for durability can be used to evaluate and inform such models. Two such analog glasses from a 1500-year-old vitrified hillfort near Uppsala, Sweden have previously been identified as potential analogs for low concentration Fe-bearing aluminosilicate nuclear waste glasses. However, open questions remain regarding the melting environment from which these historic glasses were formed and the effect of these conditions on their chemical durability. A key factor to answering the previous melting and durability questions is the redox state of Fe in the starting and final materials. Past work has shown that the melting conditions of a glass-forming melt may influence the redox ratio value (Fe+3/∑Fe), a measure of a glass's redox state, and both melting conditions and the redox ratio may influence the glass alteration behavior. Synthetic analogs of the hillfort glasses havebeenproducedusingeitherfullyoxidizedorreducedFeprecursorstoaddressthisquestion
Citation
Journal of the American Ceramic Society

Keywords

glass, Fe, XANES, archaeometry, durability

Citation

Marcial, J. , Cicconi, M. , Pearce, C. , Kloužek, J. , Neeway, J. , Pokorny, R. , Vernerova, M. , McCloy, J. , Nienhuis, E. , Sjoblom, R. , Weaver, J. , Hand, R. , Hrma, P. and Kruger, A. (2022), Effect of network connectivity on behavior of synthetic Broborg Hillfort glasses, Journal of the American Ceramic Society, [online], https://doi.org/10.1111/jace.18778, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933980 (Accessed March 25, 2023)
Created September 2, 2022, Updated November 29, 2022