| 摘要 |
PROBLEM TO BE SOLVED: To provide a powder magnetic core capable of achieving high strength even using a manufacturing method by simple pressure molding.SOLUTION: The powder magnetic core is a powder magnetic core using soft magnetic material powder. The soft magnetic material powders are bonded to each other through an oxide layer with higher ratio of a sum of Fe, Cr and Al to Al than an internal alloy phase in mass ratio. The space factor of the soft magnetic material powder is not less than 80% and its electrical resistivity is not less than 1×10&OHgr;*m. |
