| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize a magnet which contains hyperfine crystal grains, and has a high residual magnetic flux density, and a sufficient maximum magnetic energy product. <P>SOLUTION: The magnet material is substantially expressed by the general formula of R<SB>x</SB>(T<SB>1-u-v-w</SB>Cu<SB>u</SB>M1<SB>v</SB>M2<SB>w</SB>)<SB>1-x-y</SB>A<SB>y</SB>(wherein, R is at least one kind of element selected from rare earth elements inclusive of Y; T is Fe or Co; M1 is at least one kind of element selected from Zr, Ti, Nb, Mo, Ta, W, and Hf; M2 is at least one kind of element selected from Cr, V, Mn, and Ni; A is at least one kind of element selected from N and B; and x, y, u, v, and w are atomic ratios, respectively, and satisfy 0.04≤x≤0.2, 0.001≤y≤0.2, 002≤u≤0.2, 0≤v≤0.2, and 0≤w≤0.2), and contains a 0.2 to 10 vol.% non- magnetic phase containing ≥20 atomic % Cu, and a hard magnetic main phase, and in which the mean crystal grain size of the hard magnetic main phase is ≤100 nm. <P>COPYRIGHT: (C)2003,JPO |
