公开(公告)号：US20140225023A1

公开(公告)日：2014-08-14

申请号：US14256218

申请日：2014-04-18

Applicant: TODA KOGYO CORPORATION

Inventor： Yasuhiko FUJII ,  Minoru OHSUGI ,  Yasushi NISHIO ,  Yosuke KOYAMA ,  Shigeru TAKARAGI

IPC: H01F1/01 ,  H01F1/42

CPC classification number: H01F1/01 ,  C01G49/0036 ,  C01P2002/52 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/42 ,  C09C1/22 ,  H01F1/113 ,  H01F1/42 ,  H01F41/0273 ,  Y10T428/2982

Abstract: The present invention relates to ferrite particles for bonded magnet, having a volume-average particle diameter of 2.1 to 2.7 μm and a particle diameter ×90 of 4.3 to 5.4 μm wherein the ×90 represents a particle diameter at which a cumulative percentage of particles under sieve (undersize particles) based on a volume thereof is 90%, when determined from a particle size distribution thereof measured by using a laser diffraction type particle size distribution measuring apparatus.

Abstract translation: 本发明涉及体积平均粒径为2.1〜2.7μm，粒径×90为4.3〜5.4μm的粘结磁铁用铁氧体颗粒，其中×90表示颗粒累积百分比的粒径 当通过使用激光衍射型粒度分布测量装置测量的粒度分布确定时，基于其体积的筛（尺寸过小的颗粒）为90％。