AMORPHOUS SOFT MAGNETIC ALLOY ON BASIS OF COBALT Russian patent published in 2009 - IPC C22C19/07 H01F1/153 

FIELD: metallurgy.

SUBSTANCE: invention can be used in manufacturing of electromagnetic components and facilities, particularly, radio-frequency pulse transformers of types S_o, U_po and U_ko, in systems of telecommunications with digital circuit ISDN, current transformers of electronic electricity metre, fire-prevention sensors. Alloy contains, wt %: Co 58.0 - 75.0; Fe 1.3 - 2.0; Mn 0.8 - 2.0; Ni 5.0 - 9.0; Cr 0 - 1.7; Si 4.0 - 10.0; B 9.0 - 15.0. Total content of iron and manganese is 2.1 - 4.0 wt %, total content of chrome, silicon and boron is 13.0 - 26.7, correlation between components groups: Fe+Mn/Co+Ni+Fe+Mn is in the range of 0.030 - 0.045, and relation of boron content to silicon content - in the range 1.5 - 2.25.

EFFECT: magnetic properties improvement by means of optimum components matching and ratio control between them, with received alloy allowing of simultaneously high magnetic conductivity and magnetic induction with keeping of perizero magnetostriction.

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