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1. 发明授权

US06638367B2 Method of producing highly weather-resistant magnet powder, and product produced by the same method 失效
公开(公告)号：US06638367B2
公开(公告)日：2003-10-28
申请号：US09955335
申请日：2001-09-19
申请人： Kenji Ohmori , Toshiyuki Osako , Kayo Hashiguchi , Kouichi Yokosawa
发明人： Kenji Ohmori , Toshiyuki Osako , Kayo Hashiguchi , Kouichi Yokosawa
IPC分类号： H01F103
CPC分类号： H01F1/059 , H01F1/0572 , H01F41/0266
摘要： The objects of the present invention are to provide a method of producing highly weather-resistant iron-based magnet powder containing a rare-earth element, particularly characterized by high coercive force in a practically important humid atmosphere, highly weather-resistant magnet powder produced by the same method, resin composition containing the same powder for bonded magnets, and bonded magnet containing the same powder. The present invention provides a method of producing a magnet powder by crushing an iron-based magnet powder containing a rare-earth element in an organic solvent, wherein phosphoric acid is added to the solvent in which the powder is crushed.

2. 发明授权

US06447618B1 Magnetic acicular alloy particles containing iron as a main component 失效
标题翻译：以铁为主要成分的磁针状合金粒子
公开(公告)号：US06447618B1
公开(公告)日：2002-09-10
申请号：US09361112
申请日：1999-07-27
申请人： Kohji Mori , Yasutaka Ota
发明人： Kohji Mori , Yasutaka Ota
IPC分类号： H01F103
CPC分类号： B22F1/0007 , B22F1/004 , G11B5/70621 , H01F1/061 , H01F1/442 , Y10T428/2982
摘要： Magnetic acicular alloy particles containing iron as a main component according to the present invention, have an average major axial diameter of 0.05 to 0.2 &mgr;m, and pH values of water suspensions of said magnetic acicular alloy particles containing iron as a main component, which satisfies the formula: (pH value of water suspension treated by A method)−(pH value of water suspension treated by B method)
摘要翻译：以铁为主要成分的根据本发明的磁针状合金粒子的平均主轴径为0.05〜0.2μm，所述含有铁的磁性针状合金粒子的水悬浮液的pH值为式中，以铁为主成分的磁性针状合金粒子在车辆中表现出优异的分散性，特别是由极性基团如-SO3M（其中M为H，Na或K）的粘合剂树脂， COOH等，并且其中涂膜中的取向和填充密度得到改善。

3. 发明授权

US06277211B1 Cu additions to Nd-Fe-B alloys to reduce oxygen content in the ingot and rapidly solidified ribbon 失效
标题翻译： Cu添加到Nd-Fe-B合金以减少锭中的氧含量和快速凝固的带
公开(公告)号：US06277211B1
公开(公告)日：2001-08-21
申请号：US09410473
申请日：1999-09-30
申请人： Viswanathan Panchanathan , Robert Eugene Dickey
发明人： Viswanathan Panchanathan , Robert Eugene Dickey
IPC分类号： H01F103
CPC分类号： C22C38/16 , B22F2998/00 , B22F2998/10 , C22C38/002 , C22C38/005 , C22C38/10 , H01F1/057 , H01F1/0571 , C22C1/0441 , B22F9/10 , B22F9/04
摘要： A process is disclosed for producing rare earth-iron-boron alloys and magnets with reduced oxygen content and improved yield. Such a reduction in oxygen content and improvement in yield are achieved by including copper in a melt having a composition comprising a rare earth, boron, and iron, and subsequently solidifying the melt.
摘要翻译：公开了用于生产稀土 - 铁 - 硼合金和具有降低的氧含量和提高的产率的磁体的方法。通过将铜包含在具有包含稀土，硼和铁的组成的熔体中并随后使熔体固化来实现氧含量的降低和产率的提高。

4. 发明授权

US06695972B2 Formula and preparation method for multi-layer chip inductor material used in very high frequencies 失效
标题翻译：用于非常高频率的多层芯片电感材料的配方和制备方法
公开(公告)号：US06695972B2
公开(公告)日：2004-02-24
申请号：US10046878
申请日：2002-01-14
申请人： Xiaohui Wang , Longtu Li , Ji Zhou , Shuiyuan Su , Zhilun Gui , Zhenxing Yue , Zhenwei Ma , Li Zhang
发明人： Xiaohui Wang , Longtu Li , Ji Zhou , Shuiyuan Su , Zhilun Gui , Zhenxing Yue , Zhenwei Ma , Li Zhang
IPC分类号： H01F103
CPC分类号： C04B35/2633 , C04B35/265 , C04B35/6261 , C04B2235/3203 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3239 , C04B2235/3262 , C04B2235/3265 , C04B2235/3267 , C04B2235/327 , C04B2235/3277 , C04B2235/3281 , C04B2235/3284 , C04B2235/3296 , C04B2235/3298 , C04B2235/3409 , C04B2235/3418 , C04B2235/36 , C04B2235/445 , C04B2235/604 , C04B2235/656 , C04B2235/6567 , C04B2235/767 , H01F1/348 , H01F1/37
摘要： This invention relates to the formula and preparation method for a multi-layer chip inductor material used in very high frequencies. The main composition of this material is planar hexagonal soft magnetic ferrite, and ingredient is low temperature sintering aid. Preparation method is a synthetic method of solid phase reaction. The sintering aid is prepared by secondary doping. By the process of ball grinding, drying, pre-calcining, ball grinding, drying, granulating, forming, sintering, and so forth, very high frequency inductor material of superior quality is obtained, realizing low temperature sintering under a temperature lower than 900° C. This invention is of low cost, high performance, suitable for multi-layer chip inductors at very high frequencies of 300M-800 MHz.
摘要翻译：本发明涉及用于非常高频率的多层芯片电感材料的配方和制备方法。该材料的主要成分为平面六方软磁铁氧体，成分为低温烧结助剂。制备方法是固相反应的合成方法。烧结助剂通过二次掺杂制备。通过球磨，干燥，预煅烧，球磨，干燥，造粒，成型，烧结等工艺，得到质量优异的超高频感应材料，在低于900°C的温度下实现低温烧结 C.本发明成本低，性能优越，适用于300M-800MHz频率的多层片式电感器。

5. 发明授权

US06340397B1 Method for making low core loss, well-bonded, soft magnetic parts 失效
标题翻译：低磁芯损耗，良好粘结，软磁性部件的制造方法
公开(公告)号：US06340397B1
公开(公告)日：2002-01-22
申请号：US09249343
申请日：1999-02-11
申请人： David S. Lashmore , Glenn L. Beane , Lev Deresh , Zonglu Hua
发明人： David S. Lashmore , Glenn L. Beane , Lev Deresh , Zonglu Hua
IPC分类号： H01F103
CPC分类号： H01F1/33 , B22F1/02 , C22C32/0026 , C22C33/0228 , H01F1/24 , H01F41/0246 , H02K1/02 , Y10T428/256 , Y10T428/257 , Y10T428/265 , Y10T428/2991 , Y10T428/2993 , Y10T428/2998
摘要： A ferromagnetic powder comprising ferromagnetic particles coated with a material that does not degrade at temperatures above 150° C. and permits adjacent particles to strongly bind together after compaction such that parts made from the ferromagnetic powder have a transverse rupture strength of about 8,000 to about 20,000 pounds/square inch before sintering, The coating includes from 2 to 4 parts of an oxide and one part of a chromate, molybdate, oxalate, phosphate, or tungstate. The coating may be substantially free of organic materials. The invention also includes a method of making the ferromagnetic powder, a method of making soft magnetic parts from the ferromagnetic powder, and soft magnetic parts made from the ferromagnetic powder.
摘要翻译：一种铁磁粉末，其包含涂覆有不在高于150℃的温度下降解的材料的铁磁颗粒，并且允许相邻的颗粒在压实后强烈地结合在一起，使得由铁磁性粉末制成的部件具有约8,000至约20,000的横向断裂强度烧结前为磅/平方英寸，该涂层包括2至4份氧化物和1份铬酸盐，钼酸盐，草酸盐，磷酸盐或钨酸盐。涂层可以基本上不含有机材料。本发明还包括制造铁磁性粉末的方法，从铁磁性粉末制造软磁性部件的方法以及由铁磁粉末制成的软磁性部件。

6. 发明授权

US06746545B2 Preparation of rare earth permanent magnets 有权
标题翻译：稀土永磁体的制备
公开(公告)号：US06746545B2
公开(公告)日：2004-06-08
申请号：US09866853
申请日：2001-05-30
申请人： Kazuo Tamura , Masanobu Shimao , Ryuji Hamada , Takehisa Minowa
发明人： Kazuo Tamura , Masanobu Shimao , Ryuji Hamada , Takehisa Minowa
IPC分类号： H01F103
CPC分类号： H01F1/0577 , H01F41/026
摘要： An R—Fe—B permanent magnet wherein R is Nd or a combination of Nd with a rare earth element is prepared by casting an R—Fe—B alloy, crushing the alloy in an oxygen-free atmosphere of argon, nitrogen or vacuum, effecting comminution, compaction, sintering, aging, and cutting and/or polishing the magnet to give a finished surface. The magnet is then heat treated in an argon, nitrogen or low-pressure vacuum atmosphere having a limited oxygen partial pressure, obtaining a highly oil resistant sintered permanent magnet having corrosion resistance and hydrogen barrier property even in a high pressure hot environment of refrigerant and/or lubricant as encountered in compressors.
摘要翻译：通过浇铸R-Fe-B合金，在氩气，氮气或真空的无氧气氛中破碎合金来制备R是Nd或Nd与稀土元素的组合的R-Fe-B永磁体，进行粉碎，压实，烧结，老化，切割和/或抛光磁体以得到成品表面。然后在具有有限氧分压的氩气，氮气或低压真空气氛中对磁体进行热处理，即使在制冷剂的高压热环境中也获得具有耐腐蚀性和氢气阻隔性的高耐油烧结永磁体，和/ 或在压缩机中遇到的润滑剂。

7. 发明授权

US06602352B2 Method for manufacturing rare earth magnet and powder compacting apparatus 有权
公开(公告)号：US06602352B2
公开(公告)日：2003-08-05
申请号：US09891497
申请日：2001-06-27
申请人： Shuhei Okumura , Akira Nakamura
发明人： Shuhei Okumura , Akira Nakamura
IPC分类号： H01F103
CPC分类号： C22C1/0441 , B22F2999/00 , B30B11/027 , B30B15/0082 , H01F1/0577 , H01F13/00 , H01F41/0266 , H01F41/0273 , B22F3/02 , B22F2202/05 , B22F1/0081 , B22F3/004
摘要： A method and apparatus for manufacturing a rare earth magnet is disclosed. In a first step, a compact is produced by compacting rare earth alloy powder in a predetermined space in an orienting magnetic field. Next, a demagnetizing process is performed for the compact, and the compact is ejected from the predetermined space. Then, a additional demagnetizing process is performed for magnetic powder adhering to a surface of the compact by applying an magnetic field to the compact after the compact is ejected.

8. 发明授权

US06485579B1 Process for preparation of soft magnetic composites and the composites prepared 有权
标题翻译：制备软磁复合材料的方法和制备的复合材料
公开(公告)号：US06485579B1
公开(公告)日：2002-11-26
申请号：US09484271
申请日：2000-01-18
申请人： Magdalena Nillius , Patricia Jansson
发明人： Magdalena Nillius , Patricia Jansson
IPC分类号： H01F103
CPC分类号： H01F1/28 , B22F1/02 , B22F3/1007 , B22F2999/00 , C22C33/02 , H01F1/24 , B22F2201/05
摘要： The invention concerns a process for the preparation of soft magnetic composite products comprising the steps of providing particles of an iron based soft magnetic material with an electrically insulating layer; optionally mixing the dry powder with a lubricant; compacting the powder and heating the obtained component at an elevated temperature in the presence of water vapour. The invention also comprises the iron powder compact subjected to this treatment.
摘要翻译：本发明涉及一种制备软磁性复合材料产品的方法，包括以下步骤：提供具有电绝缘层的铁基软磁材料颗粒; 任选地将干粉与润滑剂混合; 在水蒸汽存在下，在升高的温度下压制粉末并加热得到的组分。本发明还包括经受该处理的铁粉末压块。

9. 发明授权

US06423264B1 Process for forming rotating electromagnets having soft and hard magnetic components 失效
标题翻译：用于形成具有软和硬磁性部件的旋转电磁体的方法
公开(公告)号：US06423264B1
公开(公告)日：2002-07-23
申请号：US09418294
申请日：1999-10-14
申请人： David Earl Gay
发明人： David Earl Gay
IPC分类号： H01F103
CPC分类号： H02K15/03 , B22F7/06 , B22F2003/033 , H01F7/0268 , H01F41/0266 , Y10T29/4902
摘要： A method of a manufacturing rotating electromagnetic component to have both soft and hard (permanent) magnet regions, in which powder technologies are used to net-shape mold the component. A soft magnet powder material and an insert or powder of a permanent magnet material are compacted to form a rotating electromagnetic body containing soft and hard magnet regions. A partial sintering operation is then performed on the body at a temperature of 1600° F. (about 870° C.) or less, preferably about 1400° F. to 1500° F. (about 760° C. and 830° C.), and most preferably at 1500° F. to at least partially fuse the soft magnet powder materials with the permanent magnet material. The soft powder component of the resulting electromagnetic body is sufficiently fused to exhibit mechanical properties comparable to a fully sintered body (i.e., sintered at 2050° F. (about 1120° C.) or more), but without degrading the magnetic properties of the hard magnet region.
摘要翻译：一种制造旋转电磁部件的方法，其具有软和硬（永久）磁体区域，其中使用粉末技术来对部件进行网状模制。软磁体粉末材料和永磁材料的插入物或粉末被压实以形成包含软和硬磁体区域的旋转电磁体。然后在1600°F（约870℃）或更低，优选约1400°F至1500°F（约760℃和830℃）的温度下对身体进行部分烧结操作。），最优选在1500°F，以使软磁体粉末材料与永磁体材料至少部分地熔合。所得到的电磁体的软质粉末成分被充分熔化，以表现出与完全烧结体相当的机械性能（即，在2050°F（约1120℃）或更高温度下烧结），但不会降低硬磁区。

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