公开(公告)号：US5658396A

公开(公告)日：1997-08-19

申请号：US540173

申请日：1995-10-06

申请人： Shinya Sakurada ,  Takahiro Hirai ,  Akihiko Tsutai

发明人： Shinya Sakurada ,  Takahiro Hirai ,  Akihiko Tsutai

IPC分类号： C22C38/00 ,  H01F1/055

CPC分类号： C22C38/00 ,  H01F1/055

摘要： Disclosed is a magnetic material which exhibits an improved saturation magnetic flux density and an improved magnetic anisotropy and, thus, is adapted for use as a raw material of a permanent magnet or a bond magnet of a high performance. The magnetic material is represented by a general formulaR.sub.x Co.sub.y Fe.sub.100-x-y (I)where R is at least one element selected from the rare earth elements, x and y are atomic percent individually defined as 4.ltoreq.x.ltoreq.20 and 0.01.ltoreq.y.ltoreq.70, and Co and Fe occupy 90 atomic percent or more in the principal phase of the compound.

摘要翻译： 公开了一种具有提高的饱和磁通密度和改善的磁各向异性的磁性材料，因此适合用作高性能永磁体或粘结磁铁的原料。 磁性材料由通式RxCoyFe100-xy（I）表示，其中R是选自稀土元素中的至少一种元素，x和y分别为原子百分比定义为4≤x≤20和0.01 < / = y <70，Co和Fe在化合物的主相中占据90原子％以上。

公开(公告)号：US5716462A

公开(公告)日：1998-02-10

申请号：US671595

申请日：1996-06-28

申请人： Shinya Sakurada ,  Akihiko Tsutai ,  Takahiro Hirai ,  Yoshitaka Yanagita ,  Masashi Sahashi ,  Tomohisa Arai ,  Keisuke Hashimoto

发明人： Shinya Sakurada ,  Akihiko Tsutai ,  Takahiro Hirai ,  Yoshitaka Yanagita ,  Masashi Sahashi ,  Tomohisa Arai ,  Keisuke Hashimoto

IPC分类号： C22C19/07 ,  C22C38/00 ,  H01F1/053 ,  H01F1/057 ,  H01F1/058 ,  H01F1/059 ,  H01F1/08

CPC分类号： H01F1/057 ,  H01F1/0578 ,  H01F1/058 ,  H01F1/059

摘要： There is provided a magnetic material having a TbCu.sub.7 phase as a principal phase and excellent in residual magnetic flux density. This magnetic material is formed of a composition represented by a general formula: R1.sub.x R2.sub.y B.sub.z A.sub.u M.sub.100-x-y-z-u wherein R1 is at least one element selected from rare earth elements including Y; R2 is at least one element selected from Zr, Hf and Sc; A is at least one element selected from H, N, C and P; M is at least one element selected from Fe and Co; x, y, z and u represent are atomic percent individually defined as 2.ltoreq.x, 2.ltoreq.x+y.ltoreq.20, 0.001.ltoreq.z.ltoreq.10, 0.ltoreq.u.ltoreq.20; and a principal phase of the magnetic material having a TbCu.sub.7 type crystal structure.

摘要翻译： 提供了具有TbCu7相作为主相的磁性材料，并且剩余磁通密度优异。 该磁性材料由通式R1xR2yBzAuM100-x-y-z-u表示的组合物形成，其中R1为选自包括Y在内的稀土元素中的至少一种元素; R2是选自Zr，Hf和Sc中的至少一种元素; A是选自H，N，C和P中的至少一种元素; M是选自Fe和Co中的至少一种元素; x，y，z和u表示的是原子百分比，分别定义为2，x，2，...，x，y = 20,0.001， 20; 以及具有TbCu7型晶体结构的磁性材料的主相。

公开(公告)号：US5549766A

公开(公告)日：1996-08-27

申请号：US288808

申请日：1994-08-12

申请人： Akihiko Tsutai ,  Takahiro Hirai ,  Shinya Sakurada

发明人： Akihiko Tsutai ,  Takahiro Hirai ,  Shinya Sakurada

IPC分类号： H01F1/055 ,  H01F1/058 ,  H01F1/059

CPC分类号： H01F1/059 ,  H01F1/055 ,  H01F1/058

摘要： A permanent magnet is composed of a magnetic material which is represented by a general formula R1.sub.x R2.sub.y A.sub.z Co.sub.u Fe.sub.100-x-y-z-u (where R1 is at least one element selected from rare earth elements, R2 is at least one element selected from the group consisting of Sc, Zr and Hf, A is at least one element selected from the group of C, N and P, and x,y,z and u are atomic percent defined as 2.ltoreq.x, 4.ltoreq.x+y.ltoreq.20, 0.ltoreq.z.ltoreq.20, 0.ltoreq.u.ltoreq.70), wherein the material includes a principal phase of TbCu.sub.7 structure and .alpha.-Fe, a peak width at half height of the main peak of X-ray diffraction of the principal phase obtained by using Cu-K.alpha. X-rays with the resolution of 0.02.degree. or less is about 0.8.degree. or less, and a ratio of peak intensity between the principal phase and .alpha.-Fe satisfies a relation that the value of I.sub.Fe /(I.sub.p +I.sub.Fe) is about 0.4 or less where I.sub.p is the peak intensity of main peak of X-ray diffraction of the principal phase obtained by using Cu-K.alpha. X-rays and I.sub.Fe is that of .alpha.-Fe.

摘要翻译： 永久磁铁由通式为R1xR2yAzCouFe100-xyzu（其中R1为选自稀土元素中的至少一种元素，R2为选自Sc，Zr和Hf中的至少一种元素）的磁性材料构成 A是选自C，N和P组中的至少一种元素，x，y，z和u是原子百分比，其定义为2

公开(公告)号：US5456769A

公开(公告)日：1995-10-10

申请号：US203371

申请日：1994-03-01

申请人： Shinya Sakurada ,  Takahiro Hirai ,  Akihiko Tsutai

发明人： Shinya Sakurada ,  Takahiro Hirai ,  Akihiko Tsutai

IPC分类号： C22C38/00 ,  H01F1/055

CPC分类号： C22C38/00 ,  H01F1/055

摘要： Disclosed is a magnetic material which exhibits an improved saturation magnetic flux density and an improved magnetic anisotropy and, thus, is adapted for use as a raw material of a permanent magnet or a bond magnet of a high performance. The magnetic material is represented by a general formulaR.sub.X Co.sub.y Fe.sub.100-x-y (I)where R is at least one element selected from the rare earth elements, x and y are atomic percent individually defined as 4.ltoreq.x.ltoreq.20 and 0.01.ltoreq.y.ltoreq.70, and Co and Fe occupy 90 atomic percent or more in the principal phase of the compound, and the principal phase has a TbCu.sub.7 crystal structure.

摘要翻译： 公开了一种具有提高的饱和磁通密度和改善的磁各向异性的磁性材料，因此适合用作高性能永磁体或粘结磁铁的原料。 磁性材料由通式RXCoyFe100-xy（I）表示，其中R是选自稀土元素中的至少一种元素，x和y分别是原子百分比定义为4≤x≤20和0.01 < / = y <70，Co和Fe在化合物的主相中占据90原子％以上，主相具有TbCu 7晶体结构。

公开(公告)号：US5482573A

公开(公告)日：1996-01-09

申请号：US961821

申请日：1992-10-16

申请人： Shinya Sakurada ,  Takahiro Hirai ,  Akihiko Tsutai ,  Masashi Sahashi ,  Hideo Nagai ,  Tsutomu Yamashita

发明人： Shinya Sakurada ,  Takahiro Hirai ,  Akihiko Tsutai ,  Masashi Sahashi ,  Hideo Nagai ,  Tsutomu Yamashita

IPC分类号： H01F1/055 ,  H01F1/058 ,  H01F1/059

CPC分类号： H01F1/059 ,  H01F1/055 ,  H01F1/058

摘要： A magnetic material with an improved maximum energy product useful for high performance permanent magnet, bond magnet and other applications is disclosed. The magnetic material is expressed in a general formula R1.sub.x R2.sub.y M.sub.100-x-y where R1 is at least one element selected from the rare earth elements, R2 is at least one element selected from elements having an atomic radius in a range of 0.156 to 0.174 nm, M is at least one element selected from Fe and Co and x and y are atomic percent individually defined as x.gtoreq.2, y.gtoreq.0.01 and 4.ltoreq.x+y.ltoreq.20, and M occupying 90 atomic percent or more in the principal phase of the compound.

摘要翻译： 公开了一种具有用于高性能永磁体，粘结磁体和其他应用的改进的最大能量积的磁性材料。 磁性材料以通式R1xR2yM100-xy表示，其中R1是选自稀土元素中的至少一种元素，R2是选自原子半径在0.156至0.174nm范围内的元素中的至少一种元素，M是 选自Fe和Co中的至少一种元素和x和y分别定义为x> / = 2，y> / = 0.01和4

公开(公告)号：US5480495A

公开(公告)日：1996-01-02

申请号：US86379

申请日：1993-07-06

申请人： Shinya Sakurada ,  Takahiro Hirai ,  Akihiko Tsutai ,  Masashi Sahashi

发明人： Shinya Sakurada ,  Takahiro Hirai ,  Akihiko Tsutai ,  Masashi Sahashi

IPC分类号： H01F1/055 ,  H01F1/059

CPC分类号： H01F1/0593 ,  H01F1/055

摘要： Disclosed is a magnetic material which suppresses formation of impurity phase of Fe, Co or Fe-Co alloy, possesses a stable ThMn.sub.12 crystal structure as the principal phase, and is excellent in magnetic properties and lower in cost. Such magnetic material is expressed in a general formula:R1.sub.x R2.sub.y Si.sub.z M.sub.u T.sub.vwhere R1is at least one element selected from Zr and Hf, R2is at least one element selected from rare earth element, M is at least one element selected from C, N and P, T is at least one element selected from Fe and Co, x+y+z+u+v=100, x, y, z, u, v are atomic percent individually defined as 0.1.ltoreq.x.ltoreq.20, 2.ltoreq.y.ltoreq.20, 0.5.ltoreq.z.ltoreq.20, 0.ltoreq.u.ltoreq.20, v.gtoreq.50, and of which principal phase possesses a ThMn.sub.12 crystal structure.

摘要翻译： 公开了抑制Fe，Co或Fe-Co合金的杂质相的形成的磁性材料，其具有稳定的ThMn12晶体结构作为主相，磁性优异，成本低。 这种磁性材料以通式表示：R1xR2ySizMuTv其中R1为选自Zr和Hf中的至少一种元素，R2为选自稀土元素中的至少一种元素，M为选自C，N和P中的至少一种元素，T为 选自Fe和Co中的至少一种元素，x + y + z + u + v = 100，x，y，z，u，v是原子百分数，各自定义为0.1≤x≤20,2/ = y / = 50，其主相具有ThMn12晶体结构。

公开(公告)号：US06468440B1

公开(公告)日：2002-10-22

申请号：US09646793

申请日：2000-09-22

申请人： Shinya Sakurada ,  Tomohisa Arai ,  Masami Okamura ,  Keisuke Hashimoto ,  Takahiro Hirai

发明人： Shinya Sakurada ,  Tomohisa Arai ,  Masami Okamura ,  Keisuke Hashimoto ,  Takahiro Hirai

IPC分类号： C04B3504

CPC分类号： H01F1/059

摘要： Magnet powder has a composition expressed by (R1XR2YBZT100−X−Y−Z)100−QNQ (in formula, R1 is at least one kind of element selected from rare earth elements, R2 is at least one kind of element selected from Zr, Hf and Sc, T is at least one kind of element selected from Fe and Co, and X, Y, Z and Q are numbers satisfying 2 atomic %≦X, 0.01 atomic %≦Y, 4≦X+Y≧20 atomic %, 0≦Z≦10 atomic %, and 0.1≦Q≦20 atomic %, respectively), and TbCu7 crystal phase as a principal phase. In such magnet powder, a ratio of fine particles of which maximum diameter is 22 &mgr;m or less is 20% by weight or less. Alternatively, surface roughness of particles constituting the magnet powder is 5 &mgr;m or less in terms of maximum height Ry provided in JIS B 0601-1994. Accordingly, to such a magnet powder, excellent magnetic properties can be obtained with reproducibility.

摘要翻译： 磁铁粉末具有由（R1XR2YBZT100-XYZ）100-QNQ表示的组成（式中，R1为选自稀土元素中的至少一种元素，R2为选自Zr，Hf，Sc，T中的至少一种元素 是选自Fe和Co中的至少一种元素，X，Y，Z和Q是满足2原子％<= X，0.01原子％<= Y，4 <= X + Y> = 20原子％的数， 0 <= Z <= 10原子％，分别为0.1 <= Q <= 20原子％），TbCu7晶相为主相。 在这种磁铁粉末中，最大直径为22μm以下的微粒的比例为20重量％以下。 或者，构成磁体粉末的颗粒的表面粗糙度以JIS B 0601-1994中规定的最大高度Ry计为5um以下。 因此，对于这种磁铁粉末，可以以重现性获得优异的磁特性。

公开(公告)号：US06416593B2

公开(公告)日：2002-07-09

申请号：US09930281

申请日：2001-08-16

申请人： Shinya Sakurada ,  Tomohisa Arai ,  Masami Okamura ,  Keisuke Hashimoto ,  Takahiro Hirai

发明人： Shinya Sakurada ,  Tomohisa Arai ,  Masami Okamura ,  Keisuke Hashimoto ,  Takahiro Hirai

IPC分类号： H01F1055

CPC分类号： H01F1/059

摘要： A magnetic material has a composition expressed by the following general formula, general formula: {(R1XR21-X)YBZT1-Y-Z}1-QNQ (where, R1 is at least one kind of element selected from rare earth elements, R2 is at least one kind of element selected from Zr, Hf, Ti and Sc, T is at least one kind of element selected from Fe and Co, and X, Y, Z and Q designate numerical values satisfying 0.5≦X

摘要翻译： 磁性材料具有以下通式表示的组成通式：（其中，R1为选自稀土元素中的至少一种元素，R2为选自Zr，Hf，Ti和Sc中的至少一种元素 T为选自Fe和Co中的至少一种元素，X，Y，Z和Q表示满足0.5 <= X <1，0.05 <= Y <= 0.2,0 <= Z <= 0.1的数值， 0.1 <= Q <= 0.2），并且包括5体积％以上的Th2Ni17结晶相。 磁性材料的再结晶组织的平均粒径在0.02〜50μm的范围内，磁性优异。 通过对主相为Th2Ni17结晶相的母合金进行HDDR处理，可以得到这样的磁性材料。

公开(公告)号：US06406559B2

公开(公告)日：2002-06-18

申请号：US09903237

申请日：2001-07-13

申请人： Shinya Sakurada ,  Takahiro Hirai ,  Keisuke Hashimoto ,  Tomohisa Arai

发明人： Shinya Sakurada ,  Takahiro Hirai ,  Keisuke Hashimoto ,  Tomohisa Arai

IPC分类号： H01F1057

CPC分类号： H01F1/059

摘要： A magnetic material essentially consists of a composition represented by general formula: R1XR2YBZNUHVM100-X-Y-Z-C-V (in the formula, R1 denotes at least one kind element selected from rare earth elements, R2 denotes at least one kind element selected from Zr, Hf and Sc, M denotes at least one kind element selected from Fe and Co, X, Y, Z, U and V are numbers satisfying 2 at. %≦X, 0.01 at. %≦Y, 4≦X+Y≦20 at. %, 0≦Z≦10 at. %, 0.1≦U≦18 at. %, 0.01≦V≦10 at. %, respectively), and comprises a TbCu7 type crystal phase as a principal phase. A nitriding treatment to a mother alloy is carried out in a mixed gas of ammonia gas and hydrogen gas of which partial pressure ratio is set in the range of 3

摘要翻译： 磁性材料基本上由以下通式表示的组成：R1XR2YBZNUHVM100-XYZCV（式中，R1表示选自稀土元素中的至少一种元素，R2表示选自Zr，Hf和Sc中的至少一种元素，M 表示选自Fe和Co中的至少一种元素，X，Y，Z，U和V是满足2 at。％<= X，0.01 at。％<= Y，4 <= X + Y <= 20的数 ％，0 <= Z <= 10原子％，0.1 <= U <= 18原子％，0.01 <= V <= 10原子％），并且包含TbCu7型晶相作为主相 。 对母合金的氮化处理在氨气和氢气的混合气体中进行，当气体的分压为PX时，分压比设定在3

公开(公告)号：US06290782B1

公开(公告)日：2001-09-18

申请号：US09276736

申请日：1999-03-26

申请人： Shinya Sakurada ,  Tomohisa Arai ,  Masami Okamura ,  Keisuke Hashimoto ,  Takahiro Hirai

发明人： Shinya Sakurada ,  Tomohisa Arai ,  Masami Okamura ,  Keisuke Hashimoto ,  Takahiro Hirai

IPC分类号： H01F1057

CPC分类号： H01F1/059

摘要： A magnetic material has a composition expressed by the following general formula, general formula: {(R1XR21−X)YBZT1−Y−Z}1−QNQ (where, R1 is at least one kind of element selected from rare earth elements, R2 is at least one kind of element selected from Zr, Hf, Ti and Sc, T is at least one kind of element selected from Fe and Co, and X, Y, Z and Q designate numerical values satisfying 0.5≦X

摘要翻译： 磁性材料具有由以下通式表示的组成（其中，R 1为选自稀土元素中的至少一种元素，R 2为选自Zr，Hf，Ti和Sc中的至少一种元素，T为 选自Fe和Co中的至少一种元素，X，Y，Z和Q表示满足0.5 <= X <1，0.05 <= Y <= 0.2,0 <= Z <= 0.1和0.1 < Q <= 0.2），并且包括5体积％以上的Th2Ni17结晶相。 磁性材料的再结晶组织的平均粒径在0.02〜50μm的范围内，磁性优异。 通过对主相为Th2Ni17结晶相的母合金进行HDDR处理，可以得到这样的磁性材料。