Effect of sintering in a hydrogen atmosphere on the density and coercivity of (Sm,Zr)(Co,Cu,Fe)Z permanent magnets

3rd International Youth Scientific Forum with International Participation "New Materials"

Burkhanov, G.S.^1 ; Dormidontov, N.A.^1 ; Kolchugina, N.B.^1 ; Dormidontov, A.G.^2

IMET RAS, 49, Leninsky pr., Moscow

119334, Russia^1

Tekhma Ltd., 49, Leninsky pr., Moscow

119334, Russia^2

关键词: Effect of heat treatments;    Force magnitude;    Hydrogen atmosphere;    Isothermal aging;    Magnetic hardening;    Manufacturing procedure;    Solid solution heat treatment;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/347/1/012023/pdf
DOI  :  10.1088/1757-899X/347/1/012023

来源: IOP

【 摘 要 】

The effect of heat treatments in manufacturing (Sm,Zr)(Co,Cu,Fe)Z-based permanent magnets sintered in a hydrogen atmosphere on their properties has been studied. It was shown that the dynamics of the magnetic hardening of the studied magnets during heat treatments, in whole, corresponds to available concepts of phase transformations in five-component precipitation-hardened SmCo-based alloys. Peculiarities of the studied compositions consist in the fact that the coercive force magnitude of magnets quenched from the isothermal aging temperature is higher by an order of magnitude than those available in the literature. It was noted that, in using the selected manufacturing procedure, the increase in the density of samples does not finish at the sintering stage but continues in the course of solid-solution heat treatment.