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发明授权
CN105788795B 一种钐钴氮永磁材料的制备方法 失效 - 权利终止 转让

一种钐钴氮永磁材料的制备方法
摘要：
本发明公开了一种钐钴氮永磁材料的制备方法，该钐钴氮永磁材料母合金的原材料以原子配比表示为：（Sm1‑x‑yNbxPry）2（Co1‑a‑b‑cTiaAlbBc）17，其中x=0.15‑0.20，y=0.01‑0.02，a=0.12‑0.15，b=0.05‑0.12，c=0.01‑0.03。本发明制备的钐钴氮永磁材料，采用Nb替代部分Sm，采用Ti替代部分Co，提高材料的综合磁性能，复配加入重稀土Pr以及能和B产生协同作用从而提高磁体的耐腐蚀性能的Al，在制备过程中本发明使用粉末液相烧结法，所制备的母合金含有能够容纳多余Sm原子的弱磁性晶界相，所制备的磁粉具有良好的磁性能、抗氧化性和耐蚀性。
摘要（英）：

The invention discloses a preparation method of a samarium-cobalt-nitrogen permanent magnet material. A raw material of a mother alloy of the samarium-cobalt-nitrogen permanent magnet material is shown as the specification: (Sm<1-x-y>NbxPry)2(Co<1-a-b-c>TiaAlbBc)17, wherein x is equal to 0.15-0.20, y is equal to 0.01-0.02, a is equal to 0.12-0.15, b is equal to 0.05-0.12 and c is equal to 0.01-0.03. According to the samarium-cobalt-nitrogen permanent magnet material prepared by the invention, one part of Sm is replaced with Nb and one part of Co is replaced with Ti, so that a comprehensive magnetic property of the material is improved; heavy rare earth Pr and Al which has a synergistic effect with B so as to improve the corrosion-resisting property of a magnet are compounded and added; in a preparation process, a powder liquid-phase sintering method is adopted and the prepared mother alloy contains a weak-magnetic grain boundary phase capable of containing surplus Sm atoms; and prepared magnetic powder has good magnetic properties, oxidization resistance and corrosion resistance.

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