MAGNETICALLY SOFT IRON BASE COMPOSITE MATERIAL AND ITS MANUFACTURING PROCESS Russian patent published in 2006 - IPC H01F1/153 C22C45/02 B22D11/117 

FIELD: metallurgy; amorphous and nanocrystalline magnetically soft alloys used for manufacture of transformers and reactors.

SUBSTANCE: proposed magnetically soft composite material produced in the form of very thin strip by casting flat flow of melt on cooling body surface followed by fast hardening has following composition[Fe]_αM_aM^α" _eM^β _fB_dSi_cX_gG_bJ_h, where Fe is base; M is element of group incorporating Co and Ni; M^α" is element of group^{incorporating Nb, W, Ta, Zr, Mo, and V; Mβ is element of group incorporating Cr and Mn; X is element of group incorporating C, Ge, Ga, P, and Sb; G is element of group incorporating Cu and/or Ag; J relates to high-melting compositions of BN, Si₃N₄, NbN, TyaN, ZrN, B₄C, SiC, NbC, VC, W₂C, ZrC in the form of colloidal solution clusters, proportion of ingredients being as follows, atom percent: 0 ≤ a ≤ 30; 1.5 ≤ e ≤ 3; 0 ≤ f ≤ 2; 6 ≤ d ≤10; 9 ≤ c ≤16; 0 ≤ g ≤ 2; 0.5 ≤ b ≤ 0.9; 0.2 ≤ h ≤ 0.5; α is the rest provided 70 ≤ α + a ≤ 80 condition is satisfied. Strip produced in the process can be longitudinally cut into desired widths by means of circular shears.}

EFFECT: improved magnetic characteristics, facilitated alloying, eliminated strip fragility.

3 cl, 2 dwg, 4 tbl