Structural Role of Alkali Cations in Calcium Aluminosilicate Glasses as Examined Using Oxygen-17 Solid-State Nuclear Magnetic Resonance Spectroscopy

Sohei Sukenaga, Koji Kanehashi, Hiroyuki Shibata, Noritaka Saito, Kunihiko Nakashima

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)

    Abstract

    The structural roles of alkali and calcium cations are important for understanding the physical and chemical properties of aluminosilicate melts and glasses. Recently, oxygen-17 nuclear magnetic resonance (17O NMR) studies of calcium–sodium aluminosilicate glasses showed that these structural roles are not randomly given, but rather each cation has its own preferential role. However, the relationship between cation type and role preference in calcium aluminosilicate glass is not completely understood. In the present study, the structural roles of lithium, sodium, and potassium cations in selected calcium aluminosilicate glasses are investigated using 17O solid-state NMR experiments. Data from these experiments clearly show that potassium cations have a notably stronger tendency to act as charge compensators within the network structure, compared to sodium and lithium cations. The result of 17O NMR experiment also showed that sodium and lithium cations in part act as network modifier alongside with calcium cations.

    Original languageEnglish
    Pages (from-to)2177-2181
    Number of pages5
    JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
    Volume47
    Issue number4
    DOIs
    Publication statusPublished - 2016 Aug 1

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Mechanics of Materials
    • Metals and Alloys
    • Materials Chemistry

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