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Thermal Diffusivity of Ba-MICA and Ba-MICA/Yttria-Stabilized Zirconia Composites

  • V. V. Mirkovich

Abstract

In search of alternate sources for generating and storing energy, ionically conductive ceramics are being investigated. Stabilized zirconia is one such material. Its thermal shock resistance is, however, relatively low. By preparing ceramic composites of stabilized zirconia with a dispersed second phase — a synthetic Ba-mica in this case — the thermal shock resistance of the basic material can be enhanced.

Previous measurements in this laboratory of thermal transport properties of Ba-mica/yttria-stabilized zirconia composites, as well as the measurements by others on similar composites, have produced somewhat unexpected results. To expand on these measurements, a specimen of solid Ba-mica as well as an additional Ba-mica/yttríastabilized zirconia composite were prepared and their thermal diffusivities determined in the range of 25° to 700°C. Measurements on oxygen deficient Ba-mica/zirconia composite indicate that oxygen vacancy formation appreciably depresses the thermal transport properties.

Keywords

Thermal Diffusivity Thermal Shock Resistance Graphite Mold Thermal Diffusivity Measurement Thermal Transport Property 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Purdue Research Foundation 1983

Authors and Affiliations

  • V. V. Mirkovich
    • 1
  1. 1.Canada Centre for Mineral and Energy TechnologyOttawaCanada

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