| 简介 |
A rare earth permanent magnet material and a raw Material composition, a preparation method therefor and use thereof. The rare earth permanent magnet material comprises the following components in percentage by mass : 29.0-32.0 wt.% of R, where R comprises RH, and the content of RH is greater than 1 wt.%; 0.30-0.50 wt.% of Cu (not including 0.50 wt.%); 0.10-1.0 wt.% of Co; 0.05-0.20 wt.% of Ti; 0.92-0.98 wt.% of B; and the remainder being Fe and unavoidable impurities; wherein R is a rare-earth element and at least comprises Nd; and RH is a heavy rare-earth element and at least comprises Tb. The R-T-B system permanent magnet material exhibits excellent performance, wherein Br ≥ 14.30 kGs, and Hcj ≥ 24.1 kOe. The invention can synchronously improve Br and Hcj. |
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