| 简介 |
The present invention provides an R-T-B-based rare earth permanent magnet obtaining a high level of coercivity (Hcj) without increasing the Dy concentration in an R-T-B-based alloy, in addition, suppressing the decrease of remanence (Br) due to the addition of Dy, and obtaining excellent magnetic properties.
The present invention relates to an R-T-B-based rare earth permanent magnet including a sintered body which is provided with a main phase mainly containing R2Fe14B, and with a grain boundary phase which has a greater R content than said main phase, wherein R denotes a rare earth element including Nd and Dy as an essential element, and the grain boundary phase includes a first grain boundary phase and a second grain boundary phase which have different atomic concentration of Dy to each other. |
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