本 发 明 公 开 了 一 种 超低 温 高矫 顽 力 的 MnBiCu永磁合金及其制备方法,MnBiCu永磁合金 的组成为Mn55Bi45‑x Cux,其1≤x≤4。本发明通过 掺 杂适 量 的 C u 元素 ,使 其 产生 金 属 化 合 物 M n 0 . 9 B i 0 . 1 C u ,并 通 过 调 节 掺 杂 量 ,增 加 Mn0 .9 Bi0 .1 Cu纯度,测试后发现合金材料的低温高 矫顽力得到了大大提升;制备过程简便易行,极 具低温应用前景。
The present invention discloses an ultra-low temperature and high coercivity MnBiCu permanent magnet alloy and its preparation method, the composition of MnBiCu permanent magnet alloy is Mn55Bi45-x Cux, with 1 ≤ x ≤ 4. 9 B i 0 . 1 Cu, and by adjusting the amount of doping to increase the purity of Mn0.9 Bi0.1 Cu, the test found that the low-temperature high coercivity of the alloy material has been greatly improved; the preparation process is simple and easy to carry out, and has a very low-temperature application prospects.