| 摘要 |
PURPOSE:To enhance permeability and to reduce the cost by a method wherein soft magnetic materials in the forms of granules, flakes and filaments are used mixedly. CONSTITUTION:For example, a mixture of granular pure iron powder of mean grain size 100mum, flake-like iron powder of mean thickness 10mum and mean diameter 1,000mum and filament-like pure iron of mean diameter 100mum and mean length 10mm., is used as a soft magnetic material. These irons are weighed and knealed with epoxy resin. Thereafter, it undergoes compression forming under pressure of 1ton/cm<2>. Subsequently, it is cured at 150 deg.C for 2hr and then drawn out into the ring-like form. In this way, by mixedly using soft magnetic materials in the forms of granules, flakes and filaments, it becomes possible to obtain a composite soft magnetic material with high permeability and the reduced cost. |
