公开(公告)号：US20070102069A1

公开(公告)日：2007-05-10

申请号：US10562986

申请日：2004-06-24

申请人： Tetsuya Hidaka ,  Hironari Okada ,  Kazuya Sakamoto ,  Takeshi Sakamoto ,  Yasuyuki Nakayama ,  Tomomi Yamamoto

发明人： Tetsuya Hidaka ,  Hironari Okada ,  Kazuya Sakamoto ,  Takeshi Sakamoto ,  Yasuyuki Nakayama ,  Tomomi Yamamoto

IPC分类号： H01F1/057

CPC分类号： C22C38/005 ,  H01F1/0577 ,  H01F41/026 ,  H01F41/26 ,  Y10T428/12465

摘要： An R-T-B system permanent magnet 1 comprises a magnet body 2 comprising a sintered body comprising at least a main phase comprising R2T14B grains (wherein R represents one or more rare earth elements, and T represents one or more transition metal elements including Fe or Fe and Co essentially) and a grain boundary phase containing R in a larger amount than the main phase, the magnet body 2 having a 300 μm or less thick (not inclusive of zero thick) hydrogen-rich layer 21 having a hydrogen concentration of 300 ppm or more formed in the surface layer portion, and an overcoat 3 covering the surface of the magnet body 2 can improve the corrosion resistance of the R-T-B system permanent magnet 1 with an overcoat 3 formed thereon without degrading the magnetic properties thereof. The present invention can be applied to formation of the overcoat 3 by electrolytic plating, can fully ensure the corrosion resistance as a primary target of the overcoat 3 formation without substantially degrading the production efficiency, and can provide the R-T-B system permanent magnet 1 with a high dimensional precision by suppressing the partial collapse (detachment of grains) of the surface thereof.

摘要翻译： RTB系统永磁体1包括磁体2，该磁体包含至少包含R 2 T 14 B晶粒的主相的烧结体（其中R表示一种或多种稀有金属 土壤元素，T表示一种或多种过渡金属元素，包括Fe或Fe和Co基本上）和含有大于主相的R的晶界相，磁体2具有300μm或更小的厚度（不包括 的零浓度）富含表面层形成的氢浓度为300ppm以上的富氢层21和覆盖在磁体2的表面的外涂层3可以提高RTB系永磁体1的耐腐蚀性， 在其上形成的外涂层3，而不降低其磁特性。 本发明可以应用于通过电解电镀形成外涂层3，可以充分确保作为外涂层3形成的主要目标的耐腐蚀性，而基本上不降低生产效率，并且可以为RTB系统永磁体1提供高的 通过抑制其表面的部分塌陷（颗粒的分离）来确定尺寸精度。

公开(公告)号：US5916376A

公开(公告)日：1999-06-29

申请号：US984945

申请日：1997-12-04

申请人： Akira Fukuno ,  Tomomi Yamamoto ,  Tetsuhito Yoneyama ,  Tetsuya Hidaka

发明人： Akira Fukuno ,  Tomomi Yamamoto ,  Tetsuhito Yoneyama ,  Tetsuya Hidaka

IPC分类号： C22C38/00 ,  H01F1/053 ,  H01F1/059 ,  H01F7/02 ,  H01F41/02

CPC分类号： H01F1/059

摘要： An object of the invention is to provide an inexpensive magnet having a high coercivity, high squareness ratio and high maximum energy product. According to the invention, a magnet containing R, T, N, and M wherein R is at least one rare earth element with essential samarium, T is iron or iron and cobalt, and M is at least one element of Ti, V, Cr, Nb, Hf, Ta, Mo, W, Al, C, and P, with essential zirconium, in amounts of 4-8 at % of R, 10-20 at % of N, 2-10 at % of M, and having a hard magnetic phase (TbCu.sub.7 type crystalline phase) and a soft magnetic phase (which is a bcc structured T phase, has an average grain diameter of 5-60 nm, and accounts for 10 to 60% by volume of the entirety), the atomic ratio (R+M)/(R+T+M) in the hard magnetic phase being in excess of 12.5%, is prepared utilizing a single roll technique. In the single roll technique, the peripheral speed of a chill roll is at least 50 m/s, and the discharge pressure of the molten alloy is 0.3-2 kgf/cm.sup.2. Following quenching, the quenched alloy is subjected to heat treatment at 600-800.degree. C. and then to nitriding treatment.

摘要翻译： 本发明的目的是提供一种具有高矫顽力，高矩形比和高最大能量积的廉价磁铁。 根据本发明，含有R，T，N和M的磁体，其中R是至少一种具有必需钐的稀土元素，T是铁或铁和钴，M是Ti，V，Cr中的至少一种元素 ，Nb，Hf，Ta，Mo，W，Al，C和P与必需的锆，其量为R的4-8原子％，N为10-20at％，M为2-10at％，以及 具有硬磁相（TbCu7型结晶相）和软磁相（其为bcc结构的T相，平均粒径为5-60nm，占全体的10〜60体积％）， 使用单辊技术制备硬磁相中的原子比（R + M）/（R + T + M）超过12.5％。 在单辊技术中，冷却辊的圆周速度为至少50m / s，熔融合金的排出压力为0.3-2kgf / cm 2。 淬火后淬火合金在600-800℃进行热处理，然后进行氮化处理。

公开(公告)号：US09177705B2

公开(公告)日：2015-11-03

申请号：US14119354

申请日：2012-05-25

申请人： Tetsuya Hidaka ,  Kazuo Sato ,  Kazuya Sakamoto ,  Shinya Fujito ,  Motoaki Hosako ,  Motohisa Murata ,  Koji Mitake

发明人： Tetsuya Hidaka ,  Kazuo Sato ,  Kazuya Sakamoto ,  Shinya Fujito ,  Motoaki Hosako ,  Motohisa Murata ,  Koji Mitake

IPC分类号： H01F1/08 ,  H01F41/02 ,  C22C33/02 ,  C22C38/00 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  H01F1/057

CPC分类号： H01F1/086 ,  B22F2998/10 ,  C22C33/02 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0266 ,  B22F1/0003 ,  B22F3/02 ,  B22F3/10

摘要： A sintered rare earth magnet rotating machine and method improve temperature properties and strength having an excellent corrosion resistance. The sintered rare earth magnet includes at least a main phase composed of R2T14B (R represents at least one rare earth element of Nd, Pr or both and T represents at least one transition metal element including Fe or Fe and Co) compound and a grain boundary phase containing a higher proportion of R than the main phase, wherein the main phase includes a heavy rare earth element (one of Dy, Tb or both), at least part of main phase grains of the main phase included in the sintered rare earth magnet includes at least the following regions, low, high and intermediate concentration regions. These regions exist in order of low, high, and intermediate concentration regions, from low concentration region towards the grain boundary phase in the main phase grains.

摘要翻译： 一种烧结稀土磁体旋转机及改善耐腐蚀性的温度特性和强度的方法。 烧结稀土类磁体至少包括由R2T14B构成的主相（R表示至少一种Nd，Pr或二者的稀土元素，T表示至少一种包含Fe或Fe和Co）化合物的过渡金属元素和晶界 相中含有比主相高的R比例，其中主相包括重稀土元素（Dy，Tb或其中之一），主相的至少部分主相晶粒包括在烧结稀土磁体中 至少包括以下区域，低，高和中等浓度区域。 这些区域按照主相晶粒中低浓度区域和晶界相的低，高和中等浓度区域的顺序存在。

公开(公告)号：US20140184370A1

公开(公告)日：2014-07-03

申请号：US14119354

申请日：2012-05-25

申请人： Tetsuya Hidaka ,  Kazuo Sato ,  Kazuya Sakamoto ,  Shinya Fujito ,  Motoaki Hosako ,  Motohisa Murata ,  Koji Mitake

发明人： Tetsuya Hidaka ,  Kazuo Sato ,  Kazuya Sakamoto ,  Shinya Fujito ,  Motoaki Hosako ,  Motohisa Murata ,  Koji Mitake

IPC分类号： H01F1/08 ,  H01F41/02

CPC分类号： H01F1/086 ,  B22F2998/10 ,  C22C33/02 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0266 ,  B22F1/0003 ,  B22F3/02 ,  B22F3/10

摘要： A sintered rare earth magnet rotating machine and method improve temperature properties and strength having an excellent corrosion resistance. The sintered rare earth magnet includes at least a main phase composed of R2T14B (R represents at least one rare earth element of Nd, Pr or both and T represents at least one transition metal element including Fe or Fe and Co) compound and a grain boundary phase containing a higher proportion of R than the main phase, wherein the main phase includes a heavy rare earth element (one of Dy, Tb or both), at least part of main phase grains of the main phase included in the sintered rare earth magnet includes at least the following regions, low, high and intermediate concentration regions. These regions exist in order of low, high, and intermediate concentration regions, from low concentration region towards the grain boundary phase in the main phase grains.

摘要翻译： 一种烧结稀土磁体旋转机及改善耐腐蚀性的温度特性和强度的方法。 烧结稀土类磁体至少包括由R2T14B构成的主相（R表示至少一种Nd，Pr或二者的稀土元素，T表示至少一种包含Fe或Fe和Co）化合物的过渡金属元素和晶界 相中含有比主相高的R比例，其中主相包括重稀土元素（Dy，Tb或其中之一），主相的至少部分主相晶粒包括在烧结稀土磁体中 至少包括以下区域，低，高和中等浓度区域。 这些区域按照主相晶粒中低浓度区域和晶界相的低，高和中等浓度区域的顺序存在。

公开(公告)号：US07955442B2

公开(公告)日：2011-06-07

申请号：US10990333

申请日：2004-11-16

申请人： Tetsuya Hidaka ,  Chikara Ishizaka

发明人： Tetsuya Hidaka ,  Chikara Ishizaka

IPC分类号： H01F1/057

CPC分类号： H01F1/0571 ,  B22F2009/041 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0441 ,  H01F1/0577 ,  H01F41/0273 ,  Y10T428/24917 ,  B22F3/02 ,  B22F2202/05 ,  B22F9/04 ,  B22F3/10

摘要： The present invention provides a method for producing a sintered magnet, which can have a sufficient sintered density even when the magnet has a low-R composition. The method is for producing a sintered magnet comprising R (R: one or more rare-earth elements), T (T: one or more transition metal elements essentially comprising Fe, or Fe and Co) and B (boron) as the main components, wherein a starting alloy prepared by strip casting is pulverized to a given particle size to form a fine powder, where the starting alloy comprises discolored deposit 1 on the surface and the area ratio of the discolored deposit 1 is 1.5% or less, the resulting fine powder is compacted in a magnetic field to prepare a compact, and the compact is sintered.

摘要翻译： 本发明提供一种制造烧结磁体的方法，即使在磁体具有低R成分的情况下也能够具有足够的烧结密度。 该方法用于制造包含R（R：一种或多种稀土元素）的T（T：一种或多种过渡金属元素，主要包含Fe或Fe和Co）和B（硼）作为主要成分的烧结磁体 其中通过带状铸造制备的起始合金粉碎至给定的粒径以形成细粉末，其中起始合金包括表面上的变色沉积物1，并且变色沉积物1的面积比为1.5％或更小，所得 细粉末在磁场中压实以制备成型体，并且将该压坯烧结。

公开(公告)号：US20080049292A1

公开(公告)日：2008-02-28

申请号：US11895235

申请日：2007-08-23

申请人： Daisuke Matsuo ,  Tetsuya Hidaka

发明人： Daisuke Matsuo ,  Tetsuya Hidaka

IPC分类号： G02B26/08

CPC分类号： G02B26/0833

摘要： A micro-mirror array device includes a plurality of micro-mirrors, a plurality of elastic members which deflectably support each of the micro-mirrors, and which are disposed symmetrically in a direction of an arrangement of the micro-mirror array which includes the plurality of micro-mirrors, and a plurality of beams which support each of the elastic-members, and which are disposed between the micro-mirrors. Further, the plurality of beams includes beams on outer sides of the micro-mirrors positioned at both ends, which support the elastic members on outer sides.

摘要翻译： 微镜阵列装置包括多个微反射镜，多个弹性构件，其可偏转地支撑每个微反射镜，并且在微镜阵列的布置方向上对称地设置，包括多个微镜 的微反射镜，以及支撑每个弹性构件并且设置在微反射镜之间的多个梁。 此外，多个梁包括位于两端的微型镜的外侧的梁，其支撑外侧的弹性构件。

公开(公告)号：US07311788B2

公开(公告)日：2007-12-25

申请号：US10675230

申请日：2003-09-29

申请人： Gouichi Nishizawa ,  Chikara Ishizaka ,  Tetsuya Hidaka ,  Akira Fukuno ,  Yoshinori Fujikawa

发明人： Gouichi Nishizawa ,  Chikara Ishizaka ,  Tetsuya Hidaka ,  Akira Fukuno ,  Yoshinori Fujikawa

IPC分类号： H01F1/057

CPC分类号： C22C28/00 ,  C22C1/0441 ,  C22C30/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  H01F1/0557 ,  H01F1/0577 ,  H01F41/0253

摘要： A sintered body with a composition consisting of 25% to 35% by weight of R (wherein R represents one or more rare earth elements, provided that the rare earth elements include Y), 0.5% to 4.5% by weight of B, 0.02% to 0.6% by weight of Al and/or Cu, 0.03% to 0.25% by weight of Zr, 4% or less by weight (excluding 0) of Co, and the balance substantially being Fe. This sintered body has a coefficient of variation (CV value) showing the dispersion degree of Zr of 130 or less. In addition, this sintered body has a grain boundary phase comprising a region that is rich both in at least one element selected from a group consisting of Cu, Co and R, and in Zr. This sintered body enables to inhibit the grain growth, while keeping the decrease of magnetic properties to a minimum, and to improve the suitable sintering temperature range.

摘要翻译： 具有25重量％至35重量％的R（其中R表示一种或多种稀土元素，条件是稀土元素包括Y），0.5重量％至4.5重量％的B组成的烧结体，0.02重量％ 至0.6重量％的Al和/或Cu，0.03〜0.25重量％的Zr，4重量％以下（不包括0）的Co，余量实质上为Fe。 该烧结体具有显示Zr的分散度为130以下的变异系数（CV值）。 此外，该烧结体具有包含富含选自Cu，Co和R中的至少一种元素的区域和在Zr中的区域的晶界相。 该烧结体能够在保持磁特性降低至最小的同时抑制晶粒生长，并且可提高合适的烧结温度范围。

公开(公告)号：US07199690B2

公开(公告)日：2007-04-03

申请号：US10807889

申请日：2004-03-24

申请人： Tetsuya Hidaka ,  Kazuya Sakamoto ,  Kazuo Sato ,  Hironari Okada

发明人： Tetsuya Hidaka ,  Kazuya Sakamoto ,  Kazuo Sato ,  Hironari Okada

IPC分类号： H01F1/053

CPC分类号： H01F1/0577

摘要： An R-T-B system rare earth permanent is provided, which comprises a sintered body comprising: an R2T14B phase (wherein R represents one or more rare earth elements (providing that the rare earth elements include Y) and T represents one or more transition metal elements essentially containing Fe, or Fe and Co) as a main phase; and a grain boundary phase containing a higher amount of R than the above main phase, wherein, when Pc (permeance coefficient) is 2, if a total flux is defined as f1 under the application of an effective magnetic field of 240 kA/m (providing that an effective magnetic field=an applied magnetic field−a demagnetizing field, and each value of them is absolute value), if a total flux is defined as f2 under the application of an effective magnetic field of 800 kA/m, and if a total flux is defined as f3 under the application of an effective magnetic field of 2,000 kA/m, a magnetization rate a (=f1/f3×100) is 40% or more, and a magnetization rate b (=f2/f3×100) is 90% or more.

摘要翻译： 提供了一种RTB系稀土永久体，其包括烧结体，其包含：R 2 T 14 B相（其中R表示一种或多种稀土元素（提供 稀土元素包括Y）和T表示一种或多种基本上含有Fe或Fe和Co）作为主相的过渡金属元素; 和含有比上述主相的R量多的晶界相，其中当Pc（磁导系数）为2时，如果在240kA / m的有效磁场的应用下将总通量定义为f 1 （提供有效磁场=施加的磁场 - 去磁场，并且它们的每个值是绝对值），如果在800kA / m的有效磁场的应用下将总磁通量定义为f 2， 并且在施加2000kA / m的有效磁场的情况下将总通量定义为f 3时，磁化率a（= f 1 / f 3×100）为40％以上，磁化率b（= f 2 / f 3×100）为90％以上。

公开(公告)号：US06811620B2

公开(公告)日：2004-11-02

申请号：US10799203

申请日：2004-03-11

申请人： Chikara Ishizaka ,  Gouichi Nishizawa ,  Tetsuya Hidaka ,  Akira Fukuno ,  Nobuya Uchida

发明人： Chikara Ishizaka ,  Gouichi Nishizawa ,  Tetsuya Hidaka ,  Akira Fukuno ,  Nobuya Uchida

IPC分类号： H01F1053

CPC分类号： H01F1/0577 ,  H01F41/0293

摘要： An R—T—B system rare earth permanent magnet, which is a sintered body comprising: a main phase consisting of an R2T14B phase (wherein R represents one or more rare earth elements (providing that the rare earth elements include Y), and T represents one or more transition metal elements essentially containing Fe, or Fe and Co); and a grain boundary phase containing a higher amount of R than the above main phase, wherein a product that is rich in Zr exists in the above R2T14B phase. The product that is rich in Zr has a platy or acicular form. The R—T—B system rare earth permanent magnet containing the product enables to inhibit the grain growth, while keeping a decrease in magnetic properties to a minimum, and to obtain a wide suitable sintering temperature range.

摘要翻译： 一种RTB系稀土永磁体，其为烧结体，包括：由R2T14B相（其中R表示一种或多种稀土元素（提供稀土元素包括Y））组成的主相，T表示一种或多种 过渡金属元素基本上含有Fe或Fe和Co）; 以及含有比上述主相含量更高的R的晶界相，其中在上述R2T14B相中存在富含Zr的产物。 富含Zr的产品具有扁平或针状。 含有该产品的R-T-B系稀土永磁体能够抑制晶粒生长，同时将磁性降低至最小，并获得宽的合适的烧结温度范围。

公开(公告)号：US5750044A

公开(公告)日：1998-05-12

申请号：US500578

申请日：1995-07-11

申请人： Tetsuhito Yoneyama ,  Tomomi Yamamoto ,  Tetsuya Hidaka ,  Akira Fukuno

发明人： Tetsuhito Yoneyama ,  Tomomi Yamamoto ,  Tetsuya Hidaka ,  Akira Fukuno

IPC分类号： H01F1/059 ,  C04B35/04

CPC分类号： H01F1/0596

摘要： A magnet consists essentially of 4-8 at % of R, 10-20 at % of N, 2-10 at % of M, and the balance of T wherein R is at least one rare earth element, Sm being present in R in a proportion of at least 50 at %, T is Fe or Fe and Co, M is Zr with or without partial replacement by at least one element of Ti, V, Cr, Nb, Hf, Ta, Mo, W, Al, C, and P. Contained in the magnet are a hard magnetic phase based on R, T, and N and containing at least one crystalline phase selected from TbCu.sub.7, Th.sub.2 Zn.sub.17, and Th.sub.2 Ni.sub.17 types and a soft magnetic phase consisting of a T phase having a bcc structure, the soft magnetic phase having a mean grain size of 5-60 nm and being present in a proportion of 10-60% by volume. This construction ensures high coercivity, high squareness ratio, and high maximum energy product.

摘要翻译： 磁体基本上由R的4-8原子％组成，N为10-20原子％，M为2-10原子％，余量为T，其中R为至少一种稀土元素，Sm存在于R中 至少50原子％的比例，T是Fe或Fe和Co，M是具有或不被Ti，V，Cr，Nb，Hf，Ta，Mo，W，Al，C的至少一种元素部分置换的Zr的Zr 和P.包含在磁体中的是基于R，T和N的硬磁相，并且含有至少一种选自TbCu7，Th2Zn17和Th2Ni17类型的结晶相和由具有bcc的T相组成的软磁相 结构，软磁性相的平均粒径为5-60nm，以10〜60体积％的比例存在。 这种结构确保了高矫顽力，高矩形比和高最大能量产品。