DIELECTRIC PROPERTIES OF CERAMICS BASED ON BN–ZrB2 AND BN–ZrO2 PRODUCED BY SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS

Abstract

Dielectric properties of ceramic materials based on BN–ZrB2 and BN–ZrO2 systems synthesized in the mode of self-propagating high-temperature synthesis (SHS) from a mixture of boron B powders, boron nitride BN and zirconium dioxide ZrO2 in an atmosphere of nitrogen N2 have been studied. The experimental results showed that ceramics synthesized from the initial mixture of (30B + 10ZrO2 + 60BN, wt. %) composition have permittivity (?) and tangent of the dielectric loss angle (tg) values of 2.63 and 0.006, respectively, at room temperature.