本发明涉及一种高纯度LTP‑MnBi相永磁合 金条带及其制备方法与应用。永磁合金条带的组 成为Mn55Bi44V1，制备方法为：按照组成Mn55Bi44V1 配置原料，将原料熔融后冷却制得合金锭，将合 金锭破碎后进行单辊旋淬制备快淬条带，最后将 快淬条带进行热处理得到高纯度LTP‑MnBi相永 磁合金条带。与现有技术相比，本发明通过单辊旋淬工艺制得的MnBi合金条带具有高纯度的铁 磁相LTP‑MnBi，使合金在保持高水平矫顽力同 时，提高磁化强度的水平，最终调节其永磁性能， 磁能积得到极大提升；制备过程简便易行，极具 应用前景。

The present invention relates to a high-purity LTP-MnBi phase permanent magnet alloy strip and its preparation method and application. The composition of the permanent magnetic alloy strip is Mn55Bi44V1, and the preparation method is as follows: configure the raw materials according to the composition of Mn55Bi44V1, melt the raw materials and then cool them down to produce the alloy ingot, crush the alloy ingot and then carry out single-roll spinning and quenching to prepare the quick-quenching strip, and finally carry out heat treatment to obtain the high-purity LTP-MnBi phase permanent magnetic alloy strip. Compared with the prior art, the MnBi alloy strip produced by the single-roll spin quenching process of the present invention has a high purity of the ferromagnetic phase LTP-MnBi, which enables the alloy to maintain a high level of coercivity while increasing the level of magnetization strength, and ultimately regulates its permanent magnetic properties and greatly improves its magnetic energy product; the process of preparation is simple and easy to carry out, and it has a great prospect of application.