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Title: Structural dependence of crystallization in glasses along the nepheline (NaAlSiO 4 ) ‐ eucryptite (LiAlSiO 4 ) join

Journal Article · · Journal of the American Ceramic Society
DOI:https://doi.org/10.1111/jace.15439· OSTI ID:1419091
ORCiD logo [1];  [2];  [1];  [3];  [4]; ORCiD logo [4]; ORCiD logo [5]
  1. Materials Science and Engineering Program Washington State University Pullman Washington
  2. School of Mechanical &, Materials Engineering Washington State University Pullman Washington
  3. Pacific Northwest National Laboratory Richland Washington
  4. Department of Materials Science and Engineering Rutgers‐The State University of New Jersey Piscataway New Jersey
  5. Materials Science and Engineering Program Washington State University Pullman Washington, School of Mechanical &, Materials Engineering Washington State University Pullman Washington, Pacific Northwest National Laboratory Richland Washington

Abstract Lithium and sodium aluminosilicates are important glass‐forming systems for commercial glass‐ceramics, as well as being important model systems for ion transport in battery studies. In addition, uncontrolled crystallization of LiAlSiO 4 (eucryptite) in high‐Li 2 O compositions, analogous to the more well‐known problem of NaAlSiO 4 (nepheline) crystallization, can cause concerns for long‐term chemical durability in nuclear waste glasses. To study the relationships between glass structure and crystallization, nine glasses were synthesized in the Li x Na 1‐ x AlSiO 4 series, from x = 0 to x = 1. Raman spectra, nuclear magnetic resonance ( NMR ) spectroscopy (Li‐7, Na‐23, Al‐27, Si‐29), and X‐ray diffraction were used to study the quenched and heat‐treated glasses. It was found that different LiAlSiO 4 and NaAlSiO 4 crystal phases crystallize from the glass depending on the Li/Na ratio. Raman and NMR spectra of quenched glasses suggest similar structures regardless of alkali substitution. Li‐7 and Na‐23 NMR spectra of the glass‐ceramics near the endmember compositions show evidence of several differentiable sites distinct from known Li x Na 1‐ x AlSiO 4 crystalline phases, suggesting that these measurements can reveal subtle chemical environment differences in mixed‐alkali systems, similar to what has been observed for zeolites.

Sponsoring Organization:
USDOE
Grant/Contract Number:
DE‐AC05‐76RL01830
OSTI ID:
1419091
Journal Information:
Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Vol. 101 Journal Issue: 7; ISSN 0002-7820
Publisher:
Wiley-BlackwellCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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