| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rapidly cooled alloy having a uniform structure and to produce a nano-composite magnet having excellent properties. <P>SOLUTION: The composition formula of the rapidly cooled alloy is (Fe<SB>1-m</SB>T<SB>m</SB>)<SB>100-x-y-z</SB>Q<SB>x</SB>R<SB>y</SB>Ti<SB>z</SB>M<SB>n</SB>(wherein T is one or more of elements selected from the group consisting of Co and Ni, Q is one or more kinds of elements selected from the group consisting of B and C, R is one or more of rare earth elements substantially non-containing La and Ce, and M is at least one of metal element selected from the group consisting of Al, Si, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Hf, Ta, W, Pt, Pb, Au, and Ag). The composition ratio x, y and z satisfies 10<x≤20 atom.%, 6≤y<10 atom.%, 0.1≤z≤12 atom.%, 0≤n≤10 atom.% and 0≤m≤0.5, respectively. The volume ratio of R<SB>2</SB>T<SB>14</SB>Q-type compound crystalline grains is greater than the volume ratio of α-Fe, the thickness of grain is <50 μm and ≤90 μm, and the standard deviation of the thickness is ≤15 μm. <P>COPYRIGHT: (C)2004,JPO |
