公开(公告)号：US20150129794A1

公开(公告)日：2015-05-14

申请号：US14534706

申请日：2014-11-06

Applicant: DENSO CORPORATION

Inventor： Eiichi KOBAYASHI ,  Kunihiro KODAMA ,  Masashi TOTOKAWA ,  Satoshi TAKEUCHI

IPC: H01F41/02 ,  B22F1/02 ,  B22F3/10 ,  B22F3/105 ,  H01F1/33

CPC classification number: B22F1/02 ,  B22F3/1039 ,  B22F3/105 ,  B22F2003/1053 ,  H01F1/33

Abstract: In a manufacturing method of a soft magnetic member, a material powder that includes ferrous particles and an organic layer formed on a surface of each of the ferrous particles is prepared. The organic layer contains at least one element selected from the group consisting of Si, Mg, Ti, and V. The material powder is compacted to form a green compact, and the green compact is induction-heated with a frequency of 100 kHz or higher to form an insulation layer made of an oxide containing the element on the surface of each of the ferrous particles.

Abstract translation: 在软磁性构件的制造方法中，制备包含铁粒子的材料粉末和在各种亚铁粒子的表面上形成的有机层。 有机层含有选自由Si，Mg，Ti，V组成的组中的至少一种元素。该材料粉末被压实以形成生坯，并且以100kHz或更高的频率对生坯进行感应加热 在每个亚铁颗粒的表面上形成由含有元素的氧化物制成的绝缘层。