Conduction characteristic of β-Spodumene Based Composite with ZrB₂

Abstract

β-Spodumene based matrix composites with ZrB₂dispersions were fabricated. The electrical resistivity value was decreased with increasing the amount of ZrB₂, and was saturated about 30 vol% ZrB₂ by the formation of percolation structure. Effect medium theory and percolation theory were used in order to analyze electroconductive expression of the composite material. This experiment result has deviated from the percolation theory. As the factor, composition and of the amorphous phase formed by the reaction between ZrB₂-β spodumenes are dependent on the ZrB₂dosage, and it is estimated that the conductivity is due to change as the result.