Magnetic properties of SMC materials based on iron powder with multilayer insulating coating

Abstract

Magnetic properties of composite magnetically soft (SMC) materials based on iron powder ABC100.30 depending on the thickness of the insulating coating based on phosphorus oxide are investigated. It was found that for SMC materials with a three-layer coating of particles, the magnitude of magnetic hysteresis is minimal. As a result, the remagnetization losses for a materials with three-layer insulating particles coating are reduced by an order of magnitude in comparison with composites based on powders with a single-layer coating. The developed materials with magnetic permeability µ = 100 – 150 and induction up to 1.8 T are promising for use in the frequency range up to 1 MHz in the manufacture of various types of electrical devices.