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    IRON-BASED RARE-EARTH-CONTAINING NANOCOMPOSITE MAGNET AND PROCESS FOR PRODUCING THE SAME
    2.
    发明公开
    IRON-BASED RARE-EARTH-CONTAINING NANOCOMPOSITE MAGNET AND PROCESS FOR PRODUCING THE SAME 有权
    含稀土对铁基磁性纳米复合材料和方法及其

    公开(公告)号：EP1762632A1

    公开(公告)日：2007-03-14

    申请号：EP06729656.6

    申请日：2006-03-22

    申请人： Neomax Co., LTD

    发明人： KANEKIYO, Hirokazu ,  HIROSAWA, Satoshi ,  MIYOSHI, Toshio

    IPC分类号： C22C38/00 ,  B22D11/06 ,  B22F3/00 ,  B22F9/08 ,  C21D6/00 ,  C22C1/04 ,  C22C19/00 ,  C22C33/02 ,  H01F1/053 ,  H01F1/06 ,  H01F41/02

    CPC分类号： B22D11/0611 ,  B22F9/008 ,  B22F2998/00 ,  B22F2998/10 ,  B82Y25/00 ,  C22C1/0441 ,  C22C33/003 ,  C22C38/002 ,  C22C38/005 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C45/02 ,  H01F1/0578 ,  H01F1/0579 ,  H01F1/058 ,  H01F41/0266 ,  B22F1/0044 ,  B22F9/007 ,  B22F9/04 ,  B22F1/0059 ,  B22F3/02

    摘要： An iron-based rare-earth nanocomposite magnet according to the present invention includes an Nd 2 Fe 14 B phase and an α-Fe phase and has a composition represented by the compositional formula: T 100-x-y-z-n (B 1-q C q ) x R y Ti z M n , where T is at least one transition metal element selected from the group consisting of Fe, Co and Ni and always including Fe, R is at least one rare-earth element including substantially no La or Ce, and M is at least one metal element selected from the group consisting of Al, Si, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au and Pb, and the mole fractions x, y, z, n and q satisfy the inequalities of: 4 at%≦x≦10 at%, 6 at%≦y≦10 at%, 0.05 at%≦z≦5 at%, 0 at%≦n≦10 at%, and 0.05≦q≦0.5, respectively. The magnet includes 5 vol% to 60 vol% of α-Fe phase with an average crystal grain size of 1 nm to 50 nm and 40 vol% to 90 vol% of Nd 2 Fe 14 B phase with an average crystal grain size of 5 nm to 100 nm. A non-magnetic phase including at least Ti and C (carbon) is present on the grain boundary between the α-Fe and Nd 2 Fe 14 B phases.

    摘要翻译： 一种铁基稀土类纳米复合磁体雅丁到本发明包括的Nd 2 Fe 14 B相和在±-Fe相，并具有由组成式表示的组成：T 100-xyzn（B 1-中，Q c q）的 X RŸ钛Z M n，其中T是选自Fe，Co和Ni中始终包含的Fe中选择的至少一种过渡金属元素，R是实质上不含有La和Ce和的至少一种稀土类元素 M是选自铝，硅，钒，铬，锰，铜，锌，镓，锆，铌，钼，银，铪，钽，W，Pt，Au和铅中选出的至少一种金属元素，和 摩尔分数X，Y，Z，n和q分别满足的不等式：4在%‰| X‰| 10原子％，6在%‰|ý‰| 10原子％00:05在%‰|ž‰| 5 原子％，0原子%‰|ñ‰| 10原子％，和0.05‰‰| q | 0.5。 所述磁体包括±-Fe相的5体积％至60体积％在1纳米至50纳米和40体积％的平均晶粒尺寸为的Nd 2 Fe 14 B相的90％（体积）与5平均结晶粒径 纳米至100纳米。一种非磁性相包含至少Ti和C（碳）存在于±-Fe和Nd 2 Fe 14 B系相之间的晶界上。

    METHOD OF PRODUCING LAMINATED PERMANENT MAGNET
    6.
    发明授权
    METHOD OF PRODUCING LAMINATED PERMANENT MAGNET 失效
    用于制造夹层永磁体

    公开(公告)号：EP0921533B1

    公开(公告)日：2007-04-18

    申请号：EP98929673.6

    申请日：1998-06-25

    申请人： Neomax Co., Ltd.

    发明人： KANEKIYO, Hirokazu-1602-2, Kitakasuga-cho ,  HIROSAWA, Satoshi

    IPC分类号： H01F1/057 ,  H01F41/02 ,  H01F1/058

    CPC分类号： H01F41/0266 ,  H01F1/0571 ,  H01F1/0575 ,  H01F1/0576 ,  H01F1/058 ,  H01F41/028

    摘要： A method of easily producing a permanent magnet having magnetic characteristics better than those of bonded magnets, capable of assuming arbitrary thickness and shape, and suitable for use in a magnetic circuit for an acceleration sensor or the like. The method comprises quenching an alloy melt of a specific composition containing not more than 6 at% of a rare earth element and 15 to 30 at% of boron under specific melt-quenching conditions to make a quenched thin amorphous alloy belt having an average thickness of 10 to 200 mu m, cutting or punching the quenched thin alloy band, and subjecting the belt to heat-treatment to crystallize the structure so that the mean grain size may be 10 to 50 nm, thereby to produce a permanent magnet having the above-mentioned average thickness and hard magnetic characteristics of iHc >/= 2 kOe and Br >/= 8 kG. Two or more such thin magnets are stacked and bonded together with an inorganic adhesive to produce a laminated permanent magnet having arbitrary thickness and shape, and exhibiting high performance without the need of cutting.