| Autor: |
Dormidontov, A. G., Kolchugina, N. B., Dormidontov, N. A., Prokofev, P. A., Zheleznyi, M. V., Milov, Yu. V., Andreenko, A. S., Sipin, I. A., Bakulina, A. S., Telitsa, A. A. |
| Zdroj: |
Inorganic Materials: Applied Research; June 2024, Vol. 15 Issue: 3 p851-865, 15p |
| Abstrakt: |
Abstract: Contemporary research methods are used to study in detail the structure and phase composition of the (Sm, Zr)(Co, Cu, Fe)zalloys with z= 5.5–7.0 in the as-cast state and after heat treatment, which includes the solid-solution treatment at 1150–1180°C for 5 h, subsequent water quenching, isothermal aging at 800°C for 20 h, and cooling (stepped aging) from 800 to 400°C at an average rate of 100°C/h. The transformation scheme of boundary structural constituent of a (Sm, Zr)(Co, Cu, Fe)zpermanent magnet manufactured by powder metallurgy technology is proposed for different heat treatment stages. The formation mechanism of the high-coercivity state of a permanent magnet in the course of complete cycle of heat treatments is given in the form of a sequence of phase transformations accompanied by the redistribution of a number of constituents of the (Sm, Zr)(Co, Cu, Fe)zalloy. |
| Databáze: |
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