| 简介 |
The present invention provides a rare-earth sintered magnet exhibiting desirable magnetic properties in which the amount of Nd and/or Pr forming a non-magnetic phase in a grain boundary phase is reduced. Specifically, the present invention provides a rare-earth sintered magnet having a composition of (R1x+R2y)T100-x-y-zQz where R1 is at least one element selected from the group consisting of all rare-earth elements excluding La (lanthanum), Y (yttrium) and Sc (scandium); R2 is at least one element selected from the group consisting of La, Y and Sc; T is at least one element selected from the group consisting of all transition elements; Q is at least one element selected from the group consisting of B and C, and including, as a main phase, a crystal grain of an Nd2Fe14B crystalline structure, wherein : molar fractions x, y and z satisfy 8≤ x≤ 18 at%, 0.1≤ y≤ 3.5 at% and 3≤ z≤ 20 at%, respectively; and a concentration of R2 is higher in at least a part of a grain boundary phase than in the main phase crystal grains. |
客服热线：
手机版
二维码
