Layered alloys for effective magnetic flux concentration in induction heating

Fundamental requirements for an efficient transformer core material are that it should have a high saturation magnetic polarization and high magnetic permeability as well as low coercivity to minimize hysteresis losses, preferably in combination with high electrical resistivity, so as to minimize eddy current losses. We report on the magnetic and electrical properties of new soft magnetic materials with respect to their application in the induction heating process. The investigation focuses on a composite layered material. The offered materials properties such as saturation of magnetization, remanence, coercive field and coefficients of efficiency of transformation in the flux controllers were defined. These materials are anticipated as magnetic flux concentration materials for very severe induction heating processes because they possess high permeability and saturation flux density, and stable mechanical properties at elevated temperatures.