铋化锰
铋化锰（Bismanol） 是一种磁性合金由铋和锰 （铋化锰manganese bismuthide）组成， 由US Naval Ordnance Laboratory（美国海军军械实验室）开发。
| 铋化锰 | |
|---|---|
| 识别 | |
| CAS号 | 12010-50-3  |
| 性质 | |
| 化学式 | BiMn |
| 摩尔质量 | 263.92 g·mol−1 |
| 结构 | |
| 晶体结构 | NiAs type |
| 空间群 | R3m[1] |
| 若非注明，所有数据均出自一般条件（25 ℃，100 kPa）下。 | |
历史
“Bismanol”（铋化锰）是由锰铋粉末冶金制成的永久磁铁，由美国海军军械实验室于20世纪50年代初开发 - Bismanol, a permanent magnet made from powder metallurgy of Manganese Bismuthide, was developed by the US Naval Ordnance Laboratory in the early 1950s -在发明时，它是可用的最高矫顽力永磁体之一，约3000奥斯特 at the time of invention it was one of the highest coercive force permanent magnets available, at 3000 oersteds.[2] Coercive force reached 3650 oersteds and flux density 4800 by the mid 1950s. The material was generally strong, and stable to shock and vibration, but had a tendency to chip. Slow corrosion of the material occurred under normal conditions.[3]
该材料用于制造用于小型电动机的永磁体。[4]
Bismanol磁铁已经被钕磁铁取代，钕磁铁在其他方面既便宜又优越，在更关键的应用中使用钐钴磁铁，以及铝镍钴合金磁铁。 Bismanol magnets have been replaced by Neodymium magnets which are both cheaper and superior in other ways, Samarium-Cobalt magnets in more critical applications, and Alnico magnets.
参考文献
- Yang, J B; Yelon, W B; James, W J; Cai, Q; Kornecki, M; Roy, S; Ali, N; l$rquot$Heritier, Ph. . Journal of Physics: Condensed Matter. 2002, 14 (25): 6509–6519. ISSN 0953-8984. doi:10.1088/0953-8984/14/25/318.
- , Physics Today, August 1952, 5 (8): 19, doi:10.1063/1.3067699
- Adams, E.; Hubbard, W.M., , Naval Ordnance Lab., USA, 1953 [2019-04-06], （原始内容存档于2016-04-02）
- Adams, Edmond. . Rev. Mod. Phys. 1953, 25 (1): 306–307. Bibcode:1953RvMP...25..306A. doi:10.1103/RevModPhys.25.306.
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