Effect of Powder Characteristics on Electrical Properties of (Ba, Bi, Nb)-Added TiO2 Ceramics
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The effect of powder characteristics on the microstructures and electrical properties of (Ba, Bi, Nb)-added TiO2 ceramics was studied. Two powders were selected: one prepared by sol-precipitation using modified alkoxide precursors, and another prepared by mixing reagent-grade oxides. The fine grains and homogeneous distribution of additives in the sol-precipitated powder enhanced additive ( e.g. Ba, Bi, Nb) dissolution in the matrix during sintering, as well as solute segregation during cooling, which resulted in better varistor electrical properties.
- Jpn J Appl Phys
Jpn J Appl Phys 35(9A), 4704-4710, 1996-09-15
INSTITUTE OF PURE AND APPLIED PHYSICS