| 摘要 |
PROBLEM TO BE SOLVED: To provide a powder for dust magnetic core having excellent compressibility and exhibiting low iron loss after molding.SOLUTION: In the powder, mass ratio of 150-75 μm is highest, mass ratio of 300-150 μm is next, mass ratio of less than 75 μm is lowest, and apparent density of the powder is 3.5 g/cmor more. Furthermore, average crystal grain diameter in the powder is 50 μm or more, for an arbitrary powder of 40 pieces or more. |
