MAGNETIC MATERIAL AND ARTICLE MADE OF IT Russian patent published in 2003 - IPC

FIELD: powder metallurgy, magnetic materials to manufacture permanent magnets. SUBSTANCE: there are proposed magnetic material of system Fe-Co-B-Nd containing chromium in addition and article made of it. Composition of material corresponds to formula Nd_1-x1-x2R1x1

R2x2)_14-20(Fe_1-y1-y2CO_y1Cr_y2)_resB_4-9 where R¹ is at least one element chosen from group including Tb, Dy, Ho, Er, Tm and R² is at least one element chosen from group including Sm, La, Ce, Pr, Y. In this case x1+x2= 0.001-0.99; x2/x1= 0.01-10.0; y1+y2=0/001-0.3; y2/y1=0.0001-0.2. Material can in addition have W as well as one element chosen from group Al, Ga, Ti, Nb, Mo, Cu, as minimum. Technical result of invention consists in growth of residual induction with simultaneous rise of temperature stability of magnetic properties. EFFECT: increased stability and precision of operation of navigational equipment and aircraft automatic systems. 3 cl, 1 tbl