COMPRESSED AND HEAT TREATED SOFT MAGNETIC IRON-BASED POWDER ALLOYS

摘要

The invention concerns a process for the preparation of a compressed soft magnetic powder core comprising the steps of compacting an iron based powder the particles of which are insulated by a chromium containing layer. The compacted body is then heated to a temperature of at least 600 DEG C for achieving stress relief and recrystallisation of the iron base material.