公开(公告)号：US10362686B2

公开(公告)日：2019-07-23

申请号：US14862607

申请日：2015-09-23

Applicant: TDK CORPORATION

Inventor： Tsutomu Yasui ,  Hisayuki Abe ,  Kenichi Kawabata ,  Tomoko Kitamura

IPC: C22C19/03 ,  C22C13/00 ,  B23K35/30 ,  B23K35/26 ,  B23K35/02 ,  B32B15/01 ,  H05K3/34

Abstract: First solder is lead-free solder that contains no lead (Pb). The first solder includes a first metal that contains at least Sn; and a second metal that contains at least a Ni—Fe alloy.

公开(公告)号：US10366814B2

公开(公告)日：2019-07-30

申请号：US15074491

申请日：2016-03-18

Applicant: TDK CORPORATION

Inventor： Masashi Ito ,  Tomoko Kitamura ,  Masaki Tomita

IPC: H01F1/057 ,  H01F1/058

Abstract: The present invention provides a permanent magnet with a composition ratio of RXT(100-X-Y)CY having a main phase with Nd5Fe17 type crystal structure, wherein: R is one or more rare earth elements including Sm as a necessary element, and the rare earth elements are Sm, Y, La, Pr, Ce, Nd, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; and T is one or more transition metal elements including Fe or a combination of Fe and Co as necessary elements; and 15