SOFT MAGNETIC POWDERED CORE AND METHOD FOR PRODUCING SAME

摘要

A powder mixture, which contains a soft magnetic powder and an insulating powder lubricant in an amount of 0.1% by mass or more relative to the soft magnetic powder, is formed by compacting at a compacting pressure of 800 MPa or less, thereby obtaining a powder compact that has a space factor of the soft magnetic powder of 93% or more. The powder compact can be used as a soft magnetic powdered core. The soft magnetic powdered core has a specific resistance or 10,000 μ&OHgr;cm or more. A powder of a metal soap such as barium stearate or lithium stearate is used as the insulating powder lubricant.