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Invention Publication
CN106062898A 永久磁铁以及使用该永久磁铁的电动机和发动机 有权 转让

永久磁铁以及使用该永久磁铁的电动机和发动机
Abstract:
本发明的实施方式的永久磁铁具有以组成式：R(FepMqCurCtCo1‑p‑q‑r‑t)z表示的组成，以及包括主相和副相的金属组织，所述主相包含Th2Zn17型晶相，所述副相是具有30原子％以上的M元素浓度的M元素的副相。M元素的副相在金属组织中析出。M元素的副相的周长相对于析出面积的比值在1以上10以下。以上的组成式中，R是选自稀土元素的至少一种元素，M是选自Ti、Zr和Hf的至少一种元素，0.27≤p≤0.45，0.01≤q≤0.05，0.01≤r≤0.1，0.002≤t≤0.03，6≤z≤9。
Abstract(English):

This permanent magnet comprises: a composition indicated by composition formula R (FepMqCurCtCo1-p-q-r-t)z (R indicates at least one element selected from rare earth elements, M indicates at least one element selected from Ti, Zr, and Hf, 0.27 <= p <= 0.45, 0.01 <= q <= 0.05, 0.01 <= r <= 0.1, 0.002 <= t <= 0.03, and 6 <= z <= 9); and a metal composition comprising a main phase including a Th2Zn17 crystal phase and an M element auxiliary phase having an M-element concentration of at least 30 at%. The M element auxiliary phase is deposited in the metal structure. The ratio of the perimeter length to the deposition area for the M element auxiliary phase is 1-10.

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