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1. 发明授权

US06777097B2 Corrosion resistant rare earth magnet and its preparation 有权
标题翻译：耐腐蚀稀土磁铁及其制备方法
公开(公告)号：US06777097B2
公开(公告)日：2004-08-17
申请号：US10170448
申请日：2002-06-14
申请人： Ryuji Hamada , Takehisa Minowa
发明人： Ryuji Hamada , Takehisa Minowa
IPC分类号： B22B900
CPC分类号： H01F41/026 , Y10T428/254 , Y10T428/256 , Y10T428/258 , Y10T428/259 , Y10T428/26 , Y10T428/31663
摘要： On a surface of a rare earth permanent magnet R—T—M—B wherein R is a rare earth element, T is Fe or Fe and Co, M is Ti, Nb, Al, V, Mn, Sn, Ca, Mg, Pb, Sb, Zn, Si, Zr, Cr, Ni, Cu, Ga, Mo, W or Ta, 5 wt %≦R≦40 wt %, 50 wt %≦90 wt %, 0 wt %≦M≦8 wt %, and 0.2 wt %≦B≦8 wt %, a solution comprising a flake fine powder of Al, Mg, Ca, Zn, Si, Mn or an alloy thereof and a silicone resin is applied and baked to form an adherent composite coating, thereby providing a corrosion resistant rare earth permanent magnet.
摘要翻译：在稀土永磁体RTMB的表面，其中R是稀土元素，T是Fe或Fe和Co，M是Ti，Nb，Al，V，Mn，Sn，Ca，Mg，Pb，Sb，Zn， Si，Zr，Cr，Ni，Cu，Ga，Mo，W或Ta，5重量％≤R≤40重量％，50重量％<= 90重量％，0重量％≤= ，0.2重量％<= B <= 8重量％，涂布包含Al，Mg，Ca，Zn，Si，Mn或其合金的薄片状细粉末和有机硅树脂的溶液并烘烤形成粘合复合材料涂覆，从而提供耐腐蚀的稀土永磁体。

2. 发明授权

US06224986B1 Rare earth permanent magnet of high corrosion resistance 有权
标题翻译：稀土永磁体具有高耐腐蚀性
公开(公告)号：US06224986B1
公开(公告)日：2001-05-01
申请号：US09358822
申请日：1999-07-22
申请人： Takehisa Minowa , Masao Yoshikawa , Ryuji Hamada
发明人： Takehisa Minowa , Masao Yoshikawa , Ryuji Hamada
IPC分类号： B32B900
CPC分类号： H01F41/026 , H01F1/0577
摘要： A neodymium/iron/boron permanent magnet is provided with high corrosion resistance by forming a coating layer of a vitrified sodium silicate on the surface. The vitreous coating layer of sodium silicate is formed by coating the surface of the permanent magnet with an aqueous coating solution of water glass followed by drying of the coating layer and vitrification of the dried coating layer by a heat treatment under specified conditions. Characteristically, the thus formed vitreous coating layer of sodium silicate is subjected to a leaching treatment with water at a specified temperature for a specified length of time in order to remove away residual sodium content leachable in water so that the troubles due to absorption of moisture by the alkali constituent in the sodium silicate coating layer can be largely dissolved.
摘要翻译：钕/铁/硼永磁体通过在表面上形成玻璃化硅酸钠的涂层而具有高耐腐蚀性。通过用水玻璃的水性涂布液涂覆永磁体的表面，然后通过在特定条件下的热处理使涂层干燥和干燥涂层的玻璃化，形成硅酸钠的玻璃质涂层。特别地，将如此形成的硅酸钠玻璃质涂层在特定温度下用水浸泡一定时间，以除去在水中可浸出的残留钠含量，使得由于吸收水分而引起的问题硅酸钠涂层中的碱性成分可以大量溶解。

3. 发明申请

US20070160863A1 Corrosion resistant rare earth metal permanent magnets and process for production thereof 审中-公开
标题翻译：耐腐蚀稀土永磁体及其制造方法
公开(公告)号：US20070160863A1
公开(公告)日：2007-07-12
申请号：US10589360
申请日：2005-06-28
申请人： Ryuji Hamada , Takehisa Minowa
发明人： Ryuji Hamada , Takehisa Minowa
IPC分类号： H01F1/00 , B22F5/00
CPC分类号： H01F41/026 , C23C18/04 , C23C18/1212 , C23C18/122 , C23C18/1241 , C23C18/1254 , C23C18/127 , C23C24/08 , C23C24/085 , C23C26/00 , H01F1/0577 , H01F1/058 , H01F7/02 , Y10T428/12014
摘要： A corrosion resistant rare earth magnet is obtained by (i) applying a treating liquid comprising a flaky fine powder and a metal sol to a surface of R—T—M—B rare earth permanent magnet and then heating to form a composite film of flaky fine powder/metal oxide on the magnet surface; (ii) applying a treating liquid comprising a flaky fine powder and a silane and/or a partial hydrolyzate thereof to a surface of R—T—M—B rare earth permanent magnet and then heating a flaky fine powder/silane and/or partially hydrolyzed silane coating to form a composite film on the magnet surface; or (iii) applying a treating liquid comprising a flaky fine powder and an alkali silicate to a surface of R—T—M—B rare earth permanent magnet and then heating to form a composite film of flaky fine powder/alkali silicate glass on the magnet surface.
摘要翻译：通过（i）将包含片状细粉末和金属溶胶的处理液施加到RTMB稀土永磁体的表面，然后加热形成片状细粉末/金属氧化物复合膜，得到耐腐蚀性稀土磁铁磁铁表面; （ii）将包含片状细粉末和硅烷和/或其部分水解产物的处理液施加到RTMB稀土永磁体的表面，然后加热片状细粉/硅烷和/或部分水解的硅烷涂层，形成磁铁表面复合膜; 或者（iii）在R-T-M-B稀土类永久磁铁的表面上涂敷含有薄片状细粉末和碱性硅酸盐的处理液，然后加热，形成片状的细粉末/碱性硅酸盐玻璃的复合膜。

4. 发明授权

US07156928B2 Corrosion-resistant rare earth element magnet 有权
标题翻译：耐腐蚀稀土元素磁铁
公开(公告)号：US07156928B2
公开(公告)日：2007-01-02
申请号：US10495968
申请日：2002-11-14
申请人： Ryuji Hamada , Takehisa Minowa
发明人： Ryuji Hamada , Takehisa Minowa
IPC分类号： H01F1/053 , H01F1/057 , B32B27/00
CPC分类号： C22C38/10 , C22C38/002 , C22C38/005 , C23C26/00 , C23C30/00 , H01F41/026 , Y10T428/2991
摘要： A corrosion resistant rare earth magnet is characterized by comprising a rare earth permanent magnet represented by R-T-M-B wherein R is at least one rare earth element inclusive of Y, T is Fe or Fe and Co, M is at least one element selected from among Ti, Nb, Al, V, Mn, Sn, Ca, Mg, Pb, Sb, Zn, Si, Zr, Cr, Ni, Cu, Ga, Mo, W, and Ta, the contents of the respective elements are 5 wt %≦R≦40 wt %, 50 wt %≦T≦90 wt %, 0 wt %≦M≦8 wt %, and 0.2 wt %≦B≦8 wt %, and a coating on a surface of the permanent magnet comprising a silicone resin, a flake metal fine powder, and a complexing agent.
摘要翻译：耐腐蚀稀土磁体的特征在于包括由RTMB表示的稀土永磁体，其中R是至少一种包括Y的稀土元素，T是Fe或Fe和Co，M是至少一种选自Ti， Nb，Al，V，Mn，Sn，Ca，Mg，Pb，Sb，Zn，Si，Zr，Cr，Ni，Cu，Ga，Mo，W和Ta中，各元素的含量为5重量％ = R <= 40重量％，50重量％<= T <= 90重量％，0重量％≤M≤8重量％和0.2重量％≤B≤8重量％所述永久磁铁的表面包括硅树脂，薄片金属细粉末和络合剂。

5. 发明申请

US20050028890A1 Rare earth element sintered magnet and method for producing rare earth element sintered magnet 有权
标题翻译：稀土元素烧结磁体及其制造方法
公开(公告)号：US20050028890A1
公开(公告)日：2005-02-10
申请号：US10500074
申请日：2002-12-24
申请人： Kazuaki Sakaki , Masaki Kasashima , Ryuji Hamada , Takehisa Minowa
发明人： Kazuaki Sakaki , Masaki Kasashima , Ryuji Hamada , Takehisa Minowa
IPC分类号： H01F1/055 , H01F1/057 , H01F41/02 , H01F1/08
CPC分类号： H01F1/0577 , H01F1/0557 , H01F41/026
摘要： Hydrogen embrittlement is prevented in Sm2Co17-based magnets and R2Fe14B-based magnets by metal plating the magnet, then carrying out heat treatment, or by forming a metal oxide or metal nitride layer on the metal plating layer or directly on the magnet itself.
摘要翻译：通过对磁体进行金属电镀，然后进行热处理，或者通过在金属镀层上形成金属氧化物或金属氮化物层，或直接在磁铁本身上，在Sm 2 Co 17系磁体和R2Fe14B系磁铁中，防止氢脆化。

6. 发明授权

US07438768B2 Rare earth element sintered magnet and method for producing rare earth element sintered magnet 有权
标题翻译：稀土元素烧结磁体及其制造方法
公开(公告)号：US07438768B2
公开(公告)日：2008-10-21
申请号：US10500074
申请日：2002-12-24
申请人： Kazuaki Sakaki , Masaki Kasashima , Ryuji Hamada , Takehisa Minowa
发明人： Kazuaki Sakaki , Masaki Kasashima , Ryuji Hamada , Takehisa Minowa
IPC分类号： H01F1/053
CPC分类号： H01F1/0577 , H01F1/0557 , H01F41/026
摘要： Hydrogen embrittlement is prevented in Sm2Co17-based magnets and R2Fe14B-based magnets by metal plating the magnet, then carrying out heat treatment, or by forming a metal oxide or metal nitride layer on the metal plating layer or directly on the magnet itself.
摘要翻译：基于Sm 2 N 2基的磁体和R 2 Fe 14 B基磁体可防止氢脆化，金属电镀磁体，然后进行热处理，或者通过在金属镀层上形成金属氧化物或金属氮化物层，或者直接在磁体本身上形成金属氧化物或金属氮化物层。

7. 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。

8. 发明授权

US08557057B2 Rare earth permanent magnet and its preparation 有权
标题翻译：稀土永磁铁及其制备方法
公开(公告)号：US08557057B2
公开(公告)日：2013-10-15
申请号：US12913180
申请日：2010-10-27
申请人： Hiroaki Nagata , Tadao Nomura , Takehisa Minowa
发明人： Hiroaki Nagata , Tadao Nomura , Takehisa Minowa
IPC分类号： H01F1/057
CPC分类号： H01F1/0577 , C22C33/0278 , C22C38/002 , C22C38/005 , C22C38/10 , C22C2202/02 , H01F41/0293
摘要： A rare earth permanent magnet is prepared by disposing a powdered metal alloy containing at least 70 vol % of an intermetallic compound phase on a sintered body of R—Fe—B system, and heating the sintered body having the powder disposed on its surface below the sintering temperature of the sintered body in vacuum or in an inert gas for diffusion treatment. The advantages include efficient productivity, excellent magnetic performance, a minimal or zero amount of Tb or Dy used, an increased coercive force, and a minimized decline of remanence.
摘要翻译：通过在R-Fe-B体系的烧结体上配置含有至少70体积％的金属间化合物相的粉末状金属合金，并且将其表面上设置的粉末的烧结体加热而制备稀土永磁体在真空中或惰性气体中进行扩散处理的烧结体的烧结温度。优点包括有效的生产率，优异的磁性能，使用的Tb或Dy的最小或零量，增加的矫顽力和最小的剩磁衰减。

9. 发明授权

US08211327B2 Preparation of rare earth permanent magnet material 有权
标题翻译：稀土永磁材料的制备
公开(公告)号：US08211327B2
公开(公告)日：2012-07-03
申请号：US10572753
申请日：2005-03-22
申请人： Hajime Nakamura , Koichi Hirota , Takehisa Minowa
发明人： Hajime Nakamura , Koichi Hirota , Takehisa Minowa
IPC分类号： C04B35/04 , C04B35/64 , C04B35/40 , C04B35/26 , H01F1/00 , H01F1/26 , H01F1/04 , H01F1/14 , B22F3/00
CPC分类号： B22F9/023 , B22F2009/044 , B22F2998/10 , B22F2999/00 , H01F1/0577 , H01F41/0293 , H01J37/32669 , B22F9/04 , B22F3/02 , B22F3/10 , B22F2201/11 , B22F2201/02
摘要： A method for preparing a rare earth permanent magnet material comprising the steps of: disposing a powder comprising one or more members selected from an oxide of R2, a fluoride of R3, and an oxyfluoride of R4 wherein R2, R3 and R4 each are one or more elements selected from among rare earth elements inclusive of Y and Sc on a sintered magnet form of a R1—Fe—B composition wherein R1 is one or more elements selected from among rare earth elements inclusive of Y and Sc, and heat treating the magnet form and the powder at a temperature equal to or below the sintering temperature of the magnet in vacuum or in an inert gas. The invention offers a high performance, compact or thin permanent magnet having a high remanence and coercivity at a high productivity.
摘要翻译：一种制备稀土永磁材料的方法，包括以下步骤：设置包含一种或多种选自R 2的氧化物，R 3的氟化物和R 4的氟氧化物的一种或多种的粉末，其中R 2，R 3和R 4各自为一个或选自包含Y和Sc的稀土元素中的更多元素是R1-Fe-B组合物的烧结磁体形式，其中R1是选自包括Y和Sc的稀土元素中的一种或多种元素，并且对磁体进行热处理在等于或低于磁体在真空或惰性气体中的温度的温度下形成粉末。本发明以高生产率提供具有高剩磁和矫顽力的高性能，紧凑或薄的永久磁铁。

10. 发明授权

US08025744B2 Rare earth permanent magnet and its preparation 有权
公开(公告)号：US08025744B2
公开(公告)日：2011-09-27
申请号：US12049603
申请日：2008-03-17
申请人： Hiroaki Nagata , Tadao Nomura , Takehisa Minowa
发明人： Hiroaki Nagata , Tadao Nomura , Takehisa Minowa
IPC分类号： H01F1/057
CPC分类号： H01F1/0577 , C22C33/0278 , C22C38/002 , C22C38/005 , C22C38/10 , C22C2202/02 , H01F41/0293
摘要： A rare earth permanent magnet is prepared by disposing a powdered metal alloy containing at least 70 vol % of an intermetallic compound phase on a sintered body of R—Fe—B system, and heating the sintered body having the powder disposed on its surface below the sintering temperature of the sintered body in vacuum or in an inert gas for diffusion treatment. The advantages include efficient productivity, excellent magnetic performance, a minimal or zero amount of Tb or Dy used, an increased coercive force, and a minimized decline of remanence.

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