Electrical Properties of Polycrystalline Ceramic Insulators.
FLORIDA UNIV GAINESVILLE DEPT OF MATERIALS SCIENCE AND ENGINEERING
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Various models developed to treat the electrical properties of heterogenous systems are briefly reviewed. It is asserted that none of these models can be adequately applied or tested for a particular material without an adequate, quantitative microstructural description. The microstructural parameters of interest for a two-phase system of grains, pores and grain boundaries are described. Polycrystalline Al2O3 has been chosen as a model system a variety of samples with systematically related microstructures have been prepared by hot-pressing. AC electrical properties have been measured for some of these samples and microstructural analysis is underway. Correlations and the model testing will follow once sufficient microstructural data have been obtained. Author
- Ceramics, Refractories and Glass
- Electricity and Magnetism