Magnetic powder material, a low loss composite magnetic material comprising the magnetic powder material, and a magnetic device comprising the low loss composite magnetic material

摘要

It is an object of the present invention to provide a material which can be used for low pressure molding, and which has a low core loss while maintaining the characteristic of an amorphous powder that is the high coercive force. There is provided a magnetic powder material containing, relative to the weight thereof, amorphous powders of 45 to 80 wt%, crystalline powders of 55 to 20 wt%, and a bonding agent. The magnetic powder material contains, relative to the mass thereof, Si of 4.605 to 6.60 mass%, Cr of 2.64 to 3.80 mass%, C of 0.225 to 0.806 mass%, Mn of 0.018 to 0.432 mass%, B of 0.99 to 2.24 mass%, P of equal to or less than 0.0248 mass%, S of equal to or less than 0.0165 mass%, Co of equal to or less than 0.0165 mass%, and a balance of Fe and inevitable impurities.