INSULATED MAGNETIC PARTICULATE MATERIALS

摘要

Insulated magnetic particulate material, such as that used to fabricate magnetic core. components for electrical converters and electrical machines, comprises a plurality of ferromagnetic particles and an electrically, insulating layer formed on each of said ferromagnetic particles. The electrically insulating layer comprises a coating compound formed as a reaction product of the ferromagnetic particles and an acid material selected from the group consisting of (a) an acid system comprising at least two acids and (b) an acid compound formed by reacting together at least two acids.