Microwave interaction with ceramic materials

The mechanism of microwave interaction to substance was analyzed with classical Maxwell electromagnetic theory and dielectric theory. The results show that the microwave absorption of substance is caused by the conductive loss and dielectric relaxation loss of substance, and the conductive loss will be main loss at high temperature. Microwave can not completely pass unabsorbing microwave materials for the surface reflecting. Heating with 2.45GHz microwave the substance conductivity is 10 -4 ～1Ω -1 ·cm -1 . The behavior of nonhomogeneous solid under microwave irradiation was simply evaluated and predicted.