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    • 48. 发明授权
    • Permanent magnet
    • 永久磁铁
    • US06475302B2
    • 2002-11-05
    • US09749803
    • 2000-12-28
    • Wu MeiToshiya SakamotoShinya SakuradaTakao SawaAkihiko TsutaiAkiko SaitoMasashi Sahashi
    • Wu MeiToshiya SakamotoShinya SakuradaTakao SawaAkihiko TsutaiAkiko SaitoMasashi Sahashi
    • H01F1055
    • H01F1/058H01F1/0306H01F1/055H01F1/057
    • Disclosed is a permanent magnet which comprises an alloy containing a hard magnetic phase having a ThMn12 type tetragonal structure and a nonmagnetic phase. The alloy is represented by a general formula given below: [R1-a(M1)a][T1-b-c(M2)b(M3)c]dx&agr; where R is at least one rare earth element (including Y), Ml is at least one element selected from the group consisting of Zr and Hf, T is at least one element selected from the group consisting of Fe, Co and Ni, M2 is at least one element selected from the group consisting of Cu, Bi, Sn, Mg, In and Pb, M3 is at least one element selected from the group consisting of Al, Ga, Ge, Zn, B, P and S, X is at least one element selected from the group consisting of Si, Ti, V, Cr, Mn, Nb, Mo, Ta and W, and the atomic ratios of a, b, c, d and &agr; fall within the ranges of 0≦a≦0.6, 0.01≦b≦0.20, 0≦c≦0.05, 6≦d≦11, and 0.5≦&agr;≦2.0.
    • 公开了一种永磁体,其包含含有ThMn 12型四方晶系的硬磁相和非磁性相的合金。 该合金由以下给出的通式表示:其中R是至少一种稀土元素(包括Y),M1是选自Zr和Hf中的至少一种元素,T是至少一种选自 由Fe,Co和Ni构成的组,M2是选自Cu,Bi,Sn,Mg,In和Pb中的至少一种元素,M3是选自Al,Ga,Ge中的至少一种元素 ,Zn,B,P和S中的至少一种,X是选自由Si,Ti,V,Cr,Mn,Nb,Mo,Ta和W组成的组中的至少一种元素,并且a,b,c, d和α落在0 <= a <= 0.6,0.01 <= b <= 0.20,0 <= c <= 0.05,6 <= d <= 11和0.5 <=α<2.0的范围内。