Soft magnetic alloy powder, compact, powder magnetic core, and magnetic element
View Patent ↗Provided are a soft magnetic alloy powder, a compact made from the soft magnetic alloy powder, a powder magnetic core including the compact, and a magnetic element including the powder magnetic core. The soft magnetic alloy powder contains Fe—Ni-based particles containing 38% to 48% by mass Ni, 1.0% to 15% by mass Co, and 1.2% to 10% by mass Si relative to the total mass of Fe, Ni, Co, and Si, the remainder being Fe. The Fe—Ni-based particles have an average size of more than 1 μm to less than 10 μm.
1. A soft magnetic alloy powder comprising Fe—Ni-based alloy particles containing 38% to 48% by mass Ni, 1.0% to 15% by mass Co, and 1.2% to 10% by mass Si relative to the total mass of Fe, Ni, Co, and Si, the remainder being Fe, wherein the Fe—Ni-based particles have an average size of more than 1 μm to less than 10 μm, and
wherein the Fe—Ni-based alloy particles have a core loss of 1526 kW/m 3 or less at 10 MHz.
2. A powder magnetic core comprising a compact obtained by press-molding a mixture of the Fe—Ni-based alloy particles specified in claim 1 , resin, and a lubricant.
3. A magnetic element comprising the powder magnetic core according to claim 2 .
4. A compact comprising Fe—Ni-based alloy particles containing 38% to 48% by mass Ni, 1.0% to 15% by mass Co, and 1.2% to 10% by mass Si relative to the total mass of Fe, Ni, Co, and Si, the remainder being Fe, wherein the surface of each of the Fe—Ni-based particles is partly or entirely coated with an insulator and the Fe—Ni-based particles have an average size of more than 1 μm to less than 10 μm, and
wherein the Fe—Ni-based alloy particles have a core loss of 1526 kW/m 3 or less at 10 MHz.
5. A powder magnetic core comprising a compact obtained by press-molding a mixture of the Fe—Ni-based alloy particles specified in claim 4 , resin, and a lubricant.
6. A magnetic element comprising the powder magnetic core according to claim 5 .