Fe-Ni-Mo FLAKY METAL SOFT MAGNETIC POWDER AND MAGNETIC COMPOSITE MATERIAL CONTAINING SOFT MAGNETIC POWDER

摘要

An Fe-Ni-Mo flaky metal soft magnetic powder having a component composition of, in percent by mass: Ni=60-90; Mo=0.05-1.95; and the balance of Fe and unavoidable impurities, an average particle size of 30-150 mum, and a flat surface with an aspect ratio (average particle size/average thickness) of 5-500. Under the condition that the plane including the direction in which X-rays enters and the direction of diffraction is perpendicular to the flat surface of the flaky metal soft magnetic powder, and the angle between the X-ray entrance direction and the flat surface is equal to the angle between the diffraction direction and the flat surface, the X-ray diffraction pattern is measured. The peak intensity ratio I200/I111 is in the range from 0.43 to 10 where I200 is the peak height of the face index (200) of the X-ray diffraction pattern and I111 is the peak height of the face index (111) thereof. Further, an oxide film coated flaky metal soft magnetic powder in which an oxide film with a thickness of 50-1000 ú is formed on the surface of each particle of the powder.