Shielding Effectiveness of Ceramic Bodies Produced with Natural Zeolite

Abstract

In this study, electromagnetic shielding effectiveness of ceramic bodies produced with natural zeolite illuminated by an electromagnetic pulse is investigated. A matrix model is used to calculate the propagation of electromagnetic pulse through sample. Shielding effectiveness of sample is determined for both transmitted electric and magnetic fields. Mathematical theory of the interaction and the shielding effectiveness of the sample is determined as a function of frequency, thickness of the material and the incidence angle of electromagnetic pulse. Zeolites used in this study were supplied from ETI Holding Company located in Turkey. Water was added as a binder and disc samples were shaped by uniaxial dry pressing at pressing pressure of 1.5 tone. Samples were fired in an electric furnace with a heating rate of 10 degrees C/min at 1150 degrees C with a period of 60 min. Electrical measurements are performed to determine the dielectric constant and dielectric loss tangent at 25 degrees C constant temperature between frequency range from 1 kHz up to 2 MHz.