Magnetic core and magnetic component

• Main Authors: ARA KENSUKE, YOSHIDOME KAZUHIRO
• Format: Patent
• Language: Chinese; English
• Published: 30.01.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

The invention provides a magnetic core and a magnetic component which can realize improvement of magnetic core loss by using a method different from the prior art. The magnetic core contains metal magnetic particles. The total area proportion of the metal magnetic particles in the cross section of the magnetic core is 75% or more. The metal magnetic particles include: first large particles (11a) having an amorphous structure and having a Haiwood diameter of 3 [mu] m or more in a cross section of the magnetic core; and second large particles (11b) having a nanocrystal structure and having a Haiwood diameter of 3 [mu] m or more in a cross section of the magnetic core. The insulating film (4a) of the first large particles (11a) is thicker than the insulating film (4b) of the second large particles (11b). 本发明提供能够利用与以往不同的方法实现磁芯损耗的改善的磁芯和磁性部件。磁芯包含金属磁性颗粒。金属磁性颗粒在磁芯的截面中所占的合计面积比例为75％以上。金属磁性颗粒包含：在磁芯的截面中的海伍德直径为3μm以上的、具有非晶结构的第一大颗粒(11a)；和在磁芯的截面中的海伍德直径为3μm以上的、具有纳米结晶结构的第二大颗粒(11b)。第一大颗粒(11a)的绝缘覆膜(4a)比第二大颗粒(11b)的绝缘覆膜(4b)厚。