Synthesis, densification, and phase evolution studies of Al2O3-Al2TiO5-TiO2 nanocomposites and measurement of their electrical properties

    Authors

    V. Somani;S. J. Kalita

    Comments

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    Abbreviated Journal Title

    J. Am. Ceram. Soc.

    Keywords

    NANOCRYSTALLINE MATERIALS; ALUMINUM TITANATE; THIN-FILMS; POWDER; CHALLENGES; SIZE; Materials Science, Ceramics

    Abstract

    Alumina-aluminum titanate-titania (Al2O3-Al2TiO5-TiO2) nanocomposites were synthesized using alkoxide precursor solutions. Thermal analysis provided information on phase evolution from the as-synthesized gel with an increase in temperature. Calcination at 700 degrees C led to the formation of an Al2O3-TiO2 nanocomposite, while at a higher temperature (1300 degrees C) an Al2O3-Al2TiO5-TiO2 nanocomposite was formed. The nanocomposites were uniaxially compacted and sintered in a pressureless environment in air to study the densification behavior, grain growth, and phase evolution. The effects of nanosize particles on the crystal structure and densification of the nanocomposite have been discussed. The sintered nanocomposite structures were also characterized for dielectric properties.

    Journal Title

    Journal of the American Ceramic Society

    Volume

    90

    Issue/Number

    8

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    2372

    Last Page

    2378

    WOS Identifier

    WOS:000248379600012

    ISSN

    0002-7820

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