Study on Microwave Absorption Property of Multi Metal Particles by Electromagnetic Simulation

In the 20
^th
century, microwave heating was considered very convenient; however, it could not be applied to heat metals. In the 21
^st
century, Mie theory and numerous experimental results supported the microwave heating of metal powder. In this study, we perform an electromagnetic simulation of microwave heating of metal particles and conclude that extra current exists at the contact points; this current is excited by microwaves. In addition to the power absorbed according to Mie theory, the extra current provides more power that is absorbed by the metal powder.