METHOD OF PRODUCING FERRITE ARTICLES Russian patent published in 2011 - IPC B22F3/16 H01F1/10 H01F1/34 

FIELD: metallurgy.

SUBSTANCE: formed billets are placed in resistance furnace, heated to sintering temperature and sintered. After sintering, said billets are removed from the furnace and cooled down to 780-800°C. After reaching said temperature, billets are subjected to electron beam penetration radiation at 780-800°C for 50-60 minutes, along with ultrasound effects at 0.15 to 5 MHz. Now, the billets are cooled to room temperature.

EFFECT: higher dielectric coefficient and reduced loss tangent of ferrite.

1 dwg, 1 tbl