Details
| Original language | English |
|---|---|
| Article number | 122561 |
| Number of pages | 10 |
| Journal | Chemical geology |
| Volume | 674 |
| Early online date | 10 Dec 2024 |
| Publication status | Published - 20 Feb 2025 |
Abstract
The incorporation of iron into peralkaline silicate glasses significantly impacts their structural and thermal properties. Here we investigate how addition of iron influences the network connectivity (short- and medium-range order) and glass transition temperature (Tg) with particular regard to the iron speciation and the Fe2+ and Fe3+ coordination state. We also found a sort of tipping point in iron concentration beyond which the short-range structures evolve linearly with density while the medium-range structure deviates from linearity. This behavior seems related to a re-enrichment of tetrahedral units triggered by iron self-compensation effect explaining the observed jump in Tg.
Keywords
- ATR, FTIR, Glass transition, Iron, Mössbauer, Raman, Soda Aluminosilicate Glasses
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geology
- Earth and Planetary Sciences(all)
- Geochemistry and Petrology
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In: Chemical geology, Vol. 674, 122561, 20.02.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Fe-dependent structural evolution of peralkaline soda aluminosilicate glasses
T2 - Iron speciation vs. glass transition
AU - Cassetta, Michele
AU - De Bona, Emanuele
AU - Sambugaro, Alessia
AU - Enrichi, Francesco
AU - Daldosso, Nicola
AU - Giannetta, Beatrice
AU - Zaccone, Claudio
AU - Biesuz, Mattia
AU - Sglavo, Vincenzo M.
AU - Almeev, Renat
AU - Nodari, Luca
AU - Giordano, Daniele
AU - Mariotto, Gino
N1 - Publisher Copyright: © 2024 The Author(s)
PY - 2025/2/20
Y1 - 2025/2/20
N2 - The incorporation of iron into peralkaline silicate glasses significantly impacts their structural and thermal properties. Here we investigate how addition of iron influences the network connectivity (short- and medium-range order) and glass transition temperature (Tg) with particular regard to the iron speciation and the Fe2+ and Fe3+ coordination state. We also found a sort of tipping point in iron concentration beyond which the short-range structures evolve linearly with density while the medium-range structure deviates from linearity. This behavior seems related to a re-enrichment of tetrahedral units triggered by iron self-compensation effect explaining the observed jump in Tg.
AB - The incorporation of iron into peralkaline silicate glasses significantly impacts their structural and thermal properties. Here we investigate how addition of iron influences the network connectivity (short- and medium-range order) and glass transition temperature (Tg) with particular regard to the iron speciation and the Fe2+ and Fe3+ coordination state. We also found a sort of tipping point in iron concentration beyond which the short-range structures evolve linearly with density while the medium-range structure deviates from linearity. This behavior seems related to a re-enrichment of tetrahedral units triggered by iron self-compensation effect explaining the observed jump in Tg.
KW - ATR
KW - FTIR
KW - Glass transition
KW - Iron
KW - Mössbauer
KW - Raman
KW - Soda Aluminosilicate Glasses
UR - http://www.scopus.com/inward/record.url?scp=85212332570&partnerID=8YFLogxK
U2 - 10.1016/j.chemgeo.2024.122561
DO - 10.1016/j.chemgeo.2024.122561
M3 - Article
AN - SCOPUS:85212332570
VL - 674
JO - Chemical geology
JF - Chemical geology
SN - 0009-2541
M1 - 122561
ER -