公开(公告)号：US20150155083A1

公开(公告)日：2015-06-04

申请号：US14378432

申请日：2013-02-13

申请人： Masashi Miwa ,  Haruna Nakajima ,  Ken-ichi Nishikawa ,  Tetsuya Hidaka ,  Jun Hagiwara ,  Chikara Ishizaka

发明人： Masashi Miwa ,  Haruna Nakajima ,  Ken-ichi Nishikawa ,  Tetsuya Hidaka ,  Jun Hagiwara ,  Chikara Ishizaka

IPC分类号： H01F1/057 ,  H01F7/02

CPC分类号： H01F1/057 ,  B22F3/10 ,  C22C38/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  H01F1/0577 ,  H01F7/02

摘要： The present invention provides an R-T-B based sintered magnet including R2T14B crystal grains wherein; a grain boundary is formed by two or more adjacent R2T14B crystal grains, an R—O—C concentrated part, in which concentrations of R, O and C are higher than those in the R2T14B crystal grains respectively, is in the grain boundary, and an area of the R—O—C concentrated part occupying in that of the grain boundary on a cut surface of the R-T-B based sintered magnet is within a range of 10% or more to 75% or less.

摘要翻译： 本发明提供一种包含R2T14B晶粒的R-T-B系烧结磁体，其中： 晶界由两个或更多个相邻的R2T14B晶粒形成，其中R，O和C的浓度分别高于R2T14B晶粒中的R-O-C浓缩部分在晶界中，并且 在RTB型烧结磁体的切断面上占据晶界边界的R-O-C浓缩部分的面积在10％以上至75％以下的范围。

公开(公告)号：US07192493B2

公开(公告)日：2007-03-20

申请号：US10675912

申请日：2003-09-29

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

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

IPC分类号： H01F1/057

CPC分类号： H01F41/0253 ,  H01F1/0557 ,  H01F1/0577

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, providing 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, wherein a coefficient of variation (CV) showing the dispersion of Zr is 130 or lower. 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： 一种组成为25重量％至35重量％的R组成的烧结体（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，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（不含0）的Co，余量实质上为Fe，其中变异系数（CV） 显示Zr的分散体为130以下。 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：US07314531B2

公开(公告)日：2008-01-01

申请号：US10799153

申请日：2004-03-11

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

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

IPC分类号： H01F1/057

CPC分类号： H01F1/0577

摘要： 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 main phase, wherein a platy or acicular product exists. This sintered body enables to inhibit the grain growth, while keeping a decrease in magnetic properties to a minimum, and to improve a suitable sintering temperature range.

摘要翻译： 一种烧结体，其包含由R 2 2 T 14 B相构成的主相（其中R表示一种或多种稀土元素（使得稀土元素包括Y） ，T表示一种或多种基本上含有Fe或Fe和Co的过渡金属元素，以及含有比主相高的R的晶界相，其中存在片状或针状产物。 该烧结体能够抑制晶粒生长，同时将磁特性降低至最小，并提高合适的烧结温度范围。

公开(公告)号：US07255752B2

公开(公告)日：2007-08-14

申请号：US10799243

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： H01F1/057

CPC分类号： H01F1/0577 ,  H01F41/0293

摘要： A method for manufacturing an R-T-B system rare earth permanent magnet that 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 above manufacturing method comprising the steps of: preparing an R-T-B alloy containing as a main component the R2T14B phase and also containing Zr, and an R-T alloy containing R and T as main components, wherein the amount of R is higher than that of the above R-T-B alloy; obtaining a mixture of the R-T-B alloy powder and the R-T alloy powder; preparing a compacted body with a certain form from the above mixture; and sintering the above compacted body, wherein, in the above sintering step, the above product is generated in the above R2T14B phase.

摘要翻译： 一种用于制造RTB系稀土永磁体的方法，该稀土永磁体是包括由R 2 T 14 B相（其中R表示一个或多个）的主相的烧结体 稀土元素（含有Y的稀土元素），T表示基本上含有Fe或Fe，Co的一种以上的过渡金属元素，以及比上述主相含有更多的R的晶界相， 其中富含Zr的产物存在于上述R 2 T 14 B相中，上述制备方法包括以下步骤：制备含有主要的RTB合金 组成R 2 T 14 T B相并且还含有Zr，以及含有R和T作为主要成分的RT合金，其中R的量高于 以上RTB合金; 得到R-T-B合金粉末和R-T合金粉末的混合物; 从上述混合物制备具有某种形式的压实体; 并烧结上述压实体，其中在上述烧结步骤中，在上述R 2 T 14 B相中产生上述产物。

公开(公告)号：US07255751B2

公开(公告)日：2007-08-14

申请号：US10675797

申请日：2003-09-29

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

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

IPC分类号： H01F1/057

CPC分类号： H01F41/0253 ,  H01F1/0557 ,  H01F1/0577

摘要： When an R-T-B system rare earth permanent magnet is obtained by a mixing method to obtain a sintered body with a composition consisting essentially of 25% to 35% by weight of R (wherein R represents one or more rare earth elements, providing 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, wherein a coefficient of variation (CV) showing the dispersion of Zr is 130 or lower, Zr is contained in a low R alloy. 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： 当通过混合方法获得具有组成基本上由25％至35％的R组成的烧结体获得RTB系稀土永磁体时（其中R表示一种或多种稀土元素，条件是稀土元素 元素包括Y），0.5〜4.5重量％的B，0.02〜0.6重量％的Al和/或Cu，0.03〜0.25重量％的Zr，4重量％以下（不含0） Co，余量基本上为Fe，其中显示Zr分散的变异系数（CV）为130以下，Zr含有低R合金。 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：US20050183791A1

公开(公告)日：2005-08-25

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： B22F3/00 ,  B22F3/16 ,  C22C1/04 ,  H01F1/053 ,  H01F1/057 ,  H01F1/08 ,  H01F41/02

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：US20110274898A1

公开(公告)日：2011-11-10

申请号：US13103869

申请日：2011-05-09

申请人： Tetsuya Hidaka ,  Chikara Ishizaka

发明人： Tetsuya Hidaka ,  Chikara Ishizaka

IPC分类号： B32B3/10

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：US06696223B2

公开(公告)日：2004-02-24

申请号：US09933479

申请日：2001-08-16

申请人： Tetsuya Hidaka ,  Yawara Kaneko

发明人： Tetsuya Hidaka ,  Yawara Kaneko

IPC分类号： G03F700

CPC分类号： G03F7/70425 ,  G03F7/0035 ,  G03F7/20 ,  G03F7/2008 ,  G03F7/2032 ,  H01L33/007

摘要： A method for generating a photoresist pattern on top of an object that includes a layer of material that is opaque to light of a predetermined wavelength. The object is first covered with a layer of photoresist material. The layer of photoresist material is then irradiated with light of the predetermined wavelength from a position under the object such that the object casts a shadow into the layer of photoresist. The photoresist material is then developed to generate the photoresist pattern. The layer of photoresist material is irradiated from below the object by providing a reflecting surface below the object and a light source above the object. A mask is positioned between the object and the light source such that the mask casts a shadow that covers the object and a portion of the area surrounding the object. The method of the invention is well suited for depositing a layer of dielectric material over a device in which the dielectric layer has a via therethrough terminating on a metallic pad that is part of the device.

摘要翻译： 一种用于在物体的顶部上产生光致抗蚀剂图案的方法，该方法包括对预定波长的光不透明的材料层。 首先用一层光致抗蚀剂材料覆盖该物体。 然后将光致抗蚀剂材料层从物体下方的位置用预定波长的光照射，使得物体将光影投射到光致抗蚀剂层中。 然后将光致抗蚀剂材料显影以产生光致抗蚀剂图案。 通过在物体下面设置反射表面和物体上方的光源，从物体下方照射光致抗蚀剂材料层。 掩模位于物体和光源之间，使得掩模施加覆盖物体的阴影和围绕物体的区域的一部分。 本发明的方法非常适用于在其中电介质层具有通孔的器件上沉积介电材料层，其终止于作为器件的一部分的金属焊盘。

公开(公告)号：US06674934B2

公开(公告)日：2004-01-06

申请号：US09992843

申请日：2001-11-06

申请人： Kent W. Carey ,  Tetsuya Hidaka ,  You Kondoh ,  Mitsuchika Saito ,  Tsutomu Takenaka

发明人： Kent W. Carey ,  Tetsuya Hidaka ,  You Kondoh ,  Mitsuchika Saito ,  Tsutomu Takenaka

IPC分类号： G02B635

CPC分类号： G02B26/004 ,  G02B6/3538 ,  G02B6/3574 ,  G02B6/3576 ,  G02B6/358

摘要： Pressure-actuated bi-stable optical switching is provided. In this regard, a pressure-actuated bi-stable optical switch includes an optical path and a cavity intersecting the optical path. The cavity defines a first position along the optical path and a second position displaced from the optical path. An index-matching liquid, which exhibits an index of refraction closer to an index of refraction of the optical path than to that of a vacuum, is arranged within the cavity. A pressure generator generates pressure that selective moves the liquid between the first and second positions. Additionally, a potential profile maintains the liquid in the one of the first and second positions to which it was most recently moved while the pressure generator is not generating pressure. Methods, systems and other switches also are provided.

摘要翻译： 提供了压力致动的双稳态光开关。 在这方面，压力致动的双稳态光开关包括光路和与光路相交的空腔。 空腔限定沿着光路的第一位置和从光路移位的第二位置。 折射率匹配液体，其折射率比真空折射率更接近光路的折射率，设置在空腔内。 压力发生器产生选择性地在第一和第二位置之间移动液体的压力。 此外，当压力发生器不产生压力时，电位轮廓将液体保持在最近移动的第一和第二位置之一中的液体。 还提供了方法，系统和其他开关。

公开(公告)号：US07462403B2

公开(公告)日：2008-12-09

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系永磁体1包括磁体2，该磁体包含至少包含R2T14B晶粒的主相的烧结体（其中R表示一种或多种稀土元素，T表示一种或多种包含Fe或Fe的过渡金属元素，Co 基本上）和含有比主相大的R的晶界相，磁体2的氢浓度为300ppm以上具有300μm以下厚（不包括零厚）的富氢层21 并且覆盖磁体2的表面的外涂层3可以在不降低其磁特性的情况下提高RTB系永磁体1与其上形成的外涂层3的耐腐蚀性。 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。