| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rapidly cooled alloy for nanocomposite magnet having good magnetic characteristic in stable mass-producing level. <P>SOLUTION: An alloy expressed with a composition formula (Fe<SB>1-m</SB>T<SB>m</SB>)<SB>100-x-y-z</SB>Q<SB>x</SB>R<SB>y</SB>M<SB>z</SB>where X, Y, Z and m each satisfies 10 ≤ x ≤ 35 atomic%, 2 ≤ y ≤ 10 atomic%, 0 ≤ z ≤ 10 atomic% and 0 ≤ m ≤ 0.5, is prepared as melt. Wherein, T is one or more of elements selected from the group composed of Co and Ni, Q is one or two elements selected from the group of B and C containing at least B, R is one or more elements in rare earth elements and M is at least one metal element selected from the group composed of Al, Si, Ti, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au and Pb. The molten metal is brought into contact with the surface of rotating cooling roll, and in this way, the rapidly cooled alloy is produced. In this cooling process, the molten metal is supplied on a guiding means, in which the guiding face is inclined to the horizontal direction, and the molten metal stream on the guide face is supplied into the contacting zone with the cooling roll through a pipy hole. <P>COPYRIGHT: (C)2004,JPO |
