Alnico

Japanese: Alnico
Alnico

...The mechanism behind this high coercive force could not be understood by the magnetic theory of the time. Subsequent technological developments in the composition of alloys, casting methods, and heat treatment continued based on KS steel, culminating in the development of high-performance Alnico alloy magnets in the five-element Fe-Co-Ni-Al-Cu system, which contributed greatly to the energy savings, miniaturization, and high performance of electromagnetic devices. It was 20 years after the discovery of MK steel that the cause of the high coercive force of magnets of this type was elucidated using the theory of single-domain particles. ...

*Some of the terminology that mentions "Alnico" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…この高い保磁力の発生機構は当時の磁性理論では理解できなかった。その後,KS鋼を基礎として合金の組成,鋳造方法および熱処理に関する技術的な開発が続けられ,Fe‐Co‐Ni‐Al‐Cu5元系の高性能合金磁石アルニコAlnicoの開発に至り,電磁機器の省エネルギー化,小型化,高性能化に大きく貢献した。この系統の磁石の高い保磁力の原因が単磁区粒子の理論によって解明されたのは,MK鋼発見後20年後のことである。…

※「Alnico」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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