| 简介 |
FIELD : production of quickly cooled magnetic alloy for making nano-composite magnets and magnets with binder used in electric motors, sensors and so on.
SUBSTANCE : method comprises steps of preparing melt and forming quickly crystallized alloy. Composition of melt has common formula : (Fe1-m Tm) 100-x-y-z Qx Ry Mz where T is Co and(or) Ni; Q is B and/or) C; R - rare earth element; M is selected from Al, Si, Ti, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au, Pb; mole fractions x, y, z and m satisfy next inequalities : 10 at.% ≤ x ≤ 35 at.%; 2 at.% ≤ y ≤ 10 at.%; 0 at.% ≤ z ≤ 10 at.%; 0 ≤ m ≤ 0.5. At stage of producing quickly solidified alloy, melt is poured onto guiding member whose guiding surface is inclined relative to horizontal plane. Melt flowing down on guiding surface is fed through opening at least of one casting duct onto contact zone of cooling roll surface.
EFFECT : possibility for providing uniform structure of magnetic alloy.
33 cl, 6 dwg, 3 tbl, 2 ex |
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