Spark plasma sintering of Ca 1-xSr xTiO 3 doped with Li 2Si 2O 5

Ruixing Li, Qing Tang, Shu Yin, Mamoru Omori, Hisanori Yamane, Tsugio Sato

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    2 Citations (Scopus)

    Abstract

    Spark plasma sintering (SPS) of Ca 1-xSr xTiO 3 was conducted with and without an Li 2Si 2O 5 additive at 1170°C for 4 min. A single phase, Cai 1-xSr xTiO 3 solid solution was formed; moreover, the mechanical and dielectric properties were improved by adding 0.5 wt% Li 2Si 2O 5. Conversely, in the absence of Li 2Si 2O 5, a mixture of Ruddlesden-Popper phases Sr n+1 Ti nO 3n+1 and rutile TiO 2 was formed in addition to Ca 1-xSr x TiO 3 although a single phase Ca 1-xSr xTiO 3 could be formed via pressureless sintering at 1200°C for 2 h in air. These results suggested that Li 2Si 2O 5 was useful even via an SPS technique to promote the mass transfer, and its optimum concentration was 0.5 wt%.

    Original languageEnglish
    Pages (from-to)3182-3186
    Number of pages5
    JournalJournal of the American Ceramic Society
    Volume89
    Issue number10
    DOIs
    Publication statusPublished - 2006 Oct 1

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Materials Chemistry

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