公开(公告)号：EP2390377B1

公开(公告)日：2017-09-27

申请号：EP10733507.7

申请日：2010-01-21

申请人： Alps Electric Co., Ltd.

发明人： KOSHIBA, Hisato ,  TSUCHIYA, Keiko ,  OKAMOTO, Jun ,  MIZUSHIMA, Takao

IPC分类号： B82Y25/00 ,  B82Y30/00 ,  C22C38/02 ,  C22C45/02 ,  H01F1/153 ,  H01F1/26 ,  H01F1/147 ,  H01F41/02

CPC分类号： H01F1/26 ,  B82Y25/00 ,  B82Y30/00 ,  C22C38/02 ,  C22C45/02 ,  H01F1/14766 ,  H01F1/15308 ,  H01F1/15333 ,  H01F1/15375 ,  H01F41/0246

公开(公告)号：EP2666881B1

公开(公告)日：2018-08-22

申请号：EP11856342.8

申请日：2011-12-28

申请人： Alps Electric Co., Ltd.

发明人： TSUCHIYA, Keiko ,  OKAMOTO, Jun ,  KOSHIBA, Hisato

IPC分类号： C22C45/02 ,  B22F3/00 ,  H01F1/153 ,  H01F1/20 ,  H01F1/26 ,  H01F27/255 ,  H01F41/02 ,  H01F17/04 ,  C22C33/02 ,  B22F1/00

CPC分类号： H01F27/255 ,  B22F1/0003 ,  C22C33/0257 ,  C22C38/00 ,  C22C45/02 ,  H01F1/15308 ,  H01F41/0246 ,  H01F2017/048

摘要： [Object] To provide in particular an Fe-based amorphous alloy powder which has a low glass transition temperature (Tg) and an excellent corrosion resistance and which is used for a dust core or a coil-embedded dust core, each having high magnetic characteristics. [Solution] An Fe-based amorphous alloy powder of the present invention has a composition represented by (Fe 100-a-bc-x-y-z-t Ni a Sn b Cr c P x C y B z Si t ) 100-± M ± . In this composition, 0 at%‰¤a‰¤10 at%, 0 at%‰¤b‰¤3 at%, 0 at%‰¤c‰¤6 at%, 6.8 at%‰¤x‰¤10.8 at%, 2.2 at%‰¤y‰¤9.8 at%, 0 at%‰¤z‰¤4.2 at%, and 0 at%‰¤t‰¤3.9 at% hold, a metal element M is at least one selected from the group consisting of Ti, Al, Mn, Zr, Hf, V, Nb, Ta, Mo, and W, and the addition amount ± of the metal element M satisfies 0.04 wt%‰¤±‰¤0.6 wt%. Accordingly, besides a decrease of Tg, an excellent corrosion resistance and high magnetic characteristics can be obtained.