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公开(公告)号：US5565043A
公开(公告)日：1996-10-15
申请号：US265474
申请日：1994-06-24
IPC分类号： B22F9/02 , C21D6/00 , C21D8/12 , C22C1/02 , C22C1/04 , C22C38/00 , C22C38/10 , C22C38/16 , H01F1/057 , H01F41/02 , H01F1/053
CPC分类号： C22C1/0441 , B22F9/023 , C21D8/1216 , C22C1/02 , C22C38/005 , C22C38/10 , C22C38/16 , H01F1/057 , H01F1/0576 , H01F41/0253 , B22F2998/00 , C21D6/00
摘要： A rare earth iron permanent magnet including at least one rare earth element, iron and boron as primary ingredients. The magnet can have an average grain diameter of less than or equal to about 150 .mu.m and a carbon content of less than or equal to about 400 ppm and a oxygen content of less than or equal to about 1000 ppm. The permanent magnet is prepared by casting a molten alloy. In one embodiment, the cast body is heat treated at a temperature of greater than or equal to about 250.degree. C. Alternatively, the material can be cast and hot worked at a temperature of greater than or equal to about 500.degree. C. Finally, the material can be cast, hot worked at a temperature of greater than or equal to about 500.degree. C. and then heat treated at a temperature of greater than or equal to about 250.degree. C. The magnets provided in accordance with the invention are relatively inexpensive to produce an have excellent performance characteristics.
摘要翻译： 一种含有至少一种稀土元素，铁和硼作为主要成分的稀土铁永磁体。 磁体的平均粒径可以小于或等于约150μm，碳含量小于或等于约400ppm，氧含量小于或等于约1000ppm。 通过铸造熔融合金制备永磁体。 在一个实施例中，铸造体在大于或等于约250℃的温度下进行热处理。或者，该材料可以在大于或等于约500℃的温度下铸造和热加工。最后， 该材料可以铸造，在大于或等于约500℃的温度下热加工，然后在大于或等于约250℃的温度下进行热处理。根据本发明提供的磁体是相对的 廉价的生产具有优异的性能特点。
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公开(公告)号：US5560784A
公开(公告)日：1996-10-01
申请号：US477034
申请日：1995-06-07
IPC分类号： B22F9/02 , C21D6/00 , C21D8/12 , C22C1/02 , C22C1/04 , C22C38/00 , C22C38/10 , C22C38/16 , H01F1/057 , H01F41/02 , H01F1/053
CPC分类号： C22C1/0441 , B22F9/023 , C21D8/1216 , C22C1/02 , C22C38/005 , C22C38/10 , C22C38/16 , H01F1/057 , H01F1/0576 , H01F41/0253 , B22F2998/00 , C21D6/00
摘要： A rare earth iron permanent magnet including at least one rare earth element, iron and boron as primary ingredients. The magnet can have an average grain diameter of less than or equal to about 150 .mu.m and a carbon content of less than or equal to about 400 ppm and content of less than or equal to about 1000 ppm. The permanent magnet is prepared by casting a molten alloy. In one embodiment, the cast body is heat treated at a temperature of greater than or equal to about 250.degree. C. Alternatively, the material can be cast and hot worked at a temperature of greater than or equal to about 500.degree. C. Finally, the material can be cast, hot worked at a temperature of greater than or equal to about 500.degree. C. and then heat treated at a temperature of greater than or equal to about 250.degree. C. The magnets provided in accordance with the invention are relatively inexpensive to produce an have excellent performance characteristics.
摘要翻译： 一种含有至少一种稀土元素，铁和硼作为主要成分的稀土铁永磁体。 磁体的平均粒径可以小于或等于约150μm，碳含量小于或等于约400ppm，含量小于或等于约1000ppm。 通过铸造熔融合金制备永磁体。 在一个实施例中，铸造体在大于或等于约250℃的温度下进行热处理。或者，该材料可以在大于或等于约500℃的温度下铸造和热加工。最后， 该材料可以铸造，在大于或等于约500℃的温度下热加工，然后在大于或等于约250℃的温度下进行热处理。根据本发明提供的磁体是相对的 廉价的生产具有优异的性能特点。
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公开(公告)号：US6136099A
公开(公告)日：2000-10-24
申请号：US034009
申请日：1993-03-19
CPC分类号： C21D8/1216 , C22C1/0441 , C22C38/005 , C22C38/10 , C22C38/16 , H01F1/0576 , B22F2998/00 , C21D6/00
摘要： A rare earth-iron series magnet formed from an alloy ingot using a one-step hot working process is provided. The alloy ingot includes between about 8 and 30 atomic percent of at least one rare earth element, between about 2 and 28 atomic percent of boron, less than about 50 atomic percent of cobalt, less than about 15 atomic percent of aluminum and the balance of iron and other impurities that are inevitably included during the preparation process. The alloy is cast to obtain a cast ingot and the hot working is performed on the cast ingot at a temperature of greater than about 500.degree. C. in order to make the crystal grains of the ingot fine and to align the axis of the grains in a desired direction.
摘要翻译： 提供了由使用一步热加工工艺的合金锭形成的稀土铁系列磁体。 合金锭包括约8至30原子％的至少一种稀土元素，约2至28原子％的硼，小于约50原子％的钴，小于约15原子％的铝，余量为 铁和其他在制备过程中不可避免的杂质。 铸造合金以获得铸锭，并且在大于约500℃的温度下对铸锭进行热加工，以使锭的晶粒细，并使晶粒的轴线对准 一个理想的方向。
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公开(公告)号：US5538565A
公开(公告)日：1996-07-23
申请号：US082190
申请日：1993-06-24
IPC分类号： B22F9/02 , C21D6/00 , C21D8/12 , C22C1/02 , C22C1/04 , C22C38/00 , C22C38/10 , C22C38/16 , H01F1/057 , H01F41/02 , H01F1/02
CPC分类号： C22C1/0441 , B22F9/023 , C21D8/1216 , C22C1/02 , C22C38/005 , C22C38/10 , C22C38/16 , H01F1/057 , H01F1/0576 , H01F41/0253 , B22F2998/00 , C21D6/00
摘要： A rare earth iron permanent magnet including at least one rare earth element, iron and boron as primary ingredients. The magnet can have an average grain diameter of less than or equal to about 150 .mu.m and a carbon content of less than or equal to about 400 ppm and an oxygen content of less than or equal to about 1000 ppm. The permanent magnet is prepared by casting a molten alloy. In one embodiment, the cast body is heat treated at a temperature of greater than or equal to about 250.degree. C. Alternatively, the material can be cast and hot worked at a temperature of greater than or equal to about 500.degree. C. Finally, the material can be cast, hot worked at a temperature of greater than or equal to about 500.degree. C. and then heat treated at a temperature of greater than or equal to about 250.degree. C. The magnets provided in accordance with the invention are relatively inexpensive to produce an have excellent performance characteristics.
摘要翻译： 一种含有至少一种稀土元素，铁和硼作为主要成分的稀土铁永磁体。 磁体的平均粒径可以小于或等于约150μm，碳含量小于或等于约400ppm，氧含量小于或等于约1000ppm。 通过铸造熔融合金制备永磁体。 在一个实施例中，铸造体在大于或等于约250℃的温度下进行热处理。或者，该材料可以在大于或等于约500℃的温度下铸造和热加工。最后， 该材料可以铸造，在大于或等于约500℃的温度下热加工，然后在大于或等于约250℃的温度下进行热处理。根据本发明提供的磁体是相对的 廉价的生产具有优异的性能特点。
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公开(公告)号：US5213631A
公开(公告)日：1993-05-25
申请号：US768802
申请日：1991-09-30
申请人： Koji Akioka , Osamu Kobayashi , Tatsuya Shimoda
发明人： Koji Akioka , Osamu Kobayashi , Tatsuya Shimoda
CPC分类号： C22C38/16 , B22F9/023 , C21D8/1216 , C22C1/0441 , C22C38/005 , C22C38/10 , H01F1/0576 , B22F2998/00 , C21D6/00 , H01F41/0293
摘要： A rare earth-iron permanent magnet which is formed from an ingot of an alloy composed of at least one rare earth element represented by R, Fe, B and Cu, by the hot working at 500.degree. C. or above which refines the crystal grains and make them magnetically anisotropic. A process for producing a rare earth-iron permanent magnet by subjecting the ingot of said alloy to hot working at 500.degree. C. or above. The permanent magnet is equal or superior in magnetic performance to conventional permanent magnets produced by sintering method. The process is simple and able to provides permanent magnets of low price and high performance. In addition, an isotropic rare earth-iron permanent magnet is obtained if said ingot undergoes heat treatment at 250.degree. C. or above.
摘要翻译： 一种稀土铁永磁体，其由通过由至少一种由R，Fe，B和Cu表示的稀土元素组成的合金锭，通过在500℃或更高温度下的热加工而形成，所述稀土元素细化了晶粒 并使其磁各向异性。 一种通过使所述合金锭在500℃或更高温度下进行热加工来生产稀土铁永磁体的方法。 永磁体与通过烧结方法制造的常规永久磁铁的磁性能相等或优异。 该过程简单，能够提供低价格，高性能的永磁体。 此外，如果所述铸锭在250℃或更高温度下进行热处理，则获得各向同性的稀土铁永磁体。
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公开(公告)号：US5186761A
公开(公告)日：1993-02-16
申请号：US815659
申请日：1991-12-31
申请人： Osamu Kobayashi , Koji Akioka , Tatsuya Shimoda
发明人： Osamu Kobayashi , Koji Akioka , Tatsuya Shimoda
CPC分类号： C22C19/07 , C22F1/10 , H01F1/057 , H01F1/0576 , H01F41/0273
摘要： An anisotropic magnetic alloy having a columnar macrostructure is provided. The magnetic alloy is prepared by melting and casting an R-Fe-B alloy in order to make a magnetic alloy having a columnar macrostructure and heat treating the cast alloy at a temperature of greater than or equal to about 250.degree. C. in order to magnetically harden the magnetic alloy. Alternatively, the cast alloy can be hot processed at a temperature greater than or equal to about 500.degree. C. in order to align the axes of the crystal grains in a specific direction and make the magnetic alloy anisotropic. In another embodiment, the cast alloy can be hot processed at a temperature of greater than or equal to about 500.degree. C. and then heat treated at a temperature of greater than or equal to about 250.degree. C.
摘要翻译： 提供具有柱状宏观结构的各向异性磁性合金。 通过熔化和铸造R-Fe-B合金来制备磁性合金，以制备具有柱状宏观结构的磁性合金，并在大于或等于约250℃的温度下对铸造合金进行热处理，以便 磁性硬化磁性合金。 或者，可以在大于或等于约500℃的温度下对铸造合金进行热处理，以使晶粒的轴在特定方向上对准，并使磁性合金各向异性。 在另一个实施方案中，铸造合金可以在大于或等于约500℃的温度下热处理，然后在大于或等于约250℃的温度下热处理。
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公开(公告)号：US5460662A
公开(公告)日：1995-10-24
申请号：US247535
申请日：1994-05-23
申请人： Osamu Kobayashi , Koji Akioka , Tatsuya Shimoda
发明人： Osamu Kobayashi , Koji Akioka , Tatsuya Shimoda
CPC分类号： C22C19/07 , C22F1/10 , H01F1/057 , H01F1/0576 , H01F41/0273
摘要： Rare earth-iron series permanent magnets having sufficient coercive force to be used as permanent magnets are produced by casting an ingot of molten raw material containing at least one rare earth element, at least one transition metal element and boron. The ingot can be hot worked and/or heat treated and/or otherwise processed into a permanent magnet.
摘要翻译： 通过铸造含有至少一种稀土元素，至少一种过渡金属元素和硼的熔融原料的锭，制造具有作为永久磁铁的充分矫顽力的稀土 - 铁系永久磁铁。 锭可以被热加工和/或热处理和/或以其他方式加工成永磁体。
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8.发明授权
公开(公告)号：US5125988A
公开(公告)日：1992-06-30
申请号：US298608
申请日：1988-10-31
申请人： Koji Akioka , Osamu Kobayashi , Tatsuya Shimoda
发明人： Koji Akioka , Osamu Kobayashi , Tatsuya Shimoda
IPC分类号： C21D6/00 , B22F9/02 , B22F9/16 , C21D8/12 , C22C1/04 , C22C38/00 , C22C38/10 , C22C38/16 , H01F1/053 , H01F1/057
CPC分类号： C21D8/1216 , B22F9/023 , B22F9/16 , C22C1/0441 , C22C38/005 , C22C38/10 , C22C38/16 , H01F1/0576 , B22F2998/00 , C21D6/00 , H01F41/0293
摘要： A rare earth-iron permanent magnet which is formed from an ingot of an alloy composed of at least one rare earth element represented by R, Fe, B and Cu, by the hot working at 500.degree. C. or above which refines the crystal grains and make them magnetically anisotropic. A process for producing a rare earth-iron permanent magnet by subjecting the ingot of said alloy to hot working at 500.degree. C. or above. The permanent magnet is equal or superior in magnetic performance to conventional permanent magnets produced by sintering method. The process is simple and able to provides permanent magnets of low price and high performance. In addition, an isotropic rare earth-iron permanent magnet is obtained if said ingot undergoes heat treatment at 250.degree. C. or above.
摘要翻译： PCT No.PCT / JP88 / 00225 Sec。 371日期1988年10月31日第 102（e）日期1988年10月31日PCT提交1988年3月1日PCT公布。 公开号WO88 / 06797 日期：1988年9月7日。一种稀土铁永磁体，其由通过在500℃下热加工的由R，Fe，B和Cu表示的至少一种稀土元素组成的合金锭形成。 或以上，其精炼晶粒并使其成为磁性各向异性。 一种通过使所述合金锭在500℃或更高温度下进行热加工来生产稀土铁永磁体的方法。 永磁体与通过烧结方法制造的常规永久磁铁的磁性能相等或优异。 该过程简单，能够提供低价格，高性能的永磁体。 此外，如果所述铸锭在250℃或更高温度下进行热处理，则获得各向同性的稀土铁永磁体。
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公开(公告)号：US5597425A
公开(公告)日：1997-01-28
申请号：US487198
申请日：1995-06-07
IPC分类号： B22F9/02 , C21D6/00 , C21D8/12 , C22C1/02 , C22C1/04 , C22C38/00 , C22C38/10 , C22C38/16 , H01F1/057 , H01F41/02 , H01F1/053
CPC分类号： C22C1/0441 , B22F9/023 , C21D8/1216 , C22C1/02 , C22C38/005 , C22C38/10 , C22C38/16 , H01F1/057 , H01F1/0576 , H01F41/0253 , B22F2998/00 , C21D6/00
摘要： A rare earth iron permanent magnet including at least one rare earth element, iron and boron as primary ingredients. The magnet can have an average grain diameter of less than or equal to about 150 .mu.m and a carbon content of less than or equal to about 400 ppm and a oxygen content of less than or equal to about 1000 ppm. The permanent magnet is prepared by casting a molten alloy. In one embodiment, the cast body is heat treated at a temperature of greater than or equal to about 250.degree. C. Alternatively, the material can be cast and hot worked at a temperature of greater than or equal to about 500.degree. C. Finally, the material can be cast, hot worked at a temperature of greater than or equal to about 500.degree. C. and then heat treated at a temperature of greater than or equal to about 250.degree. C. The magnets provided in accordance with the invention are relatively inexpensive to produce an have excellent performance characteristics.
摘要翻译： 一种含有至少一种稀土元素，铁和硼作为主要成分的稀土铁永磁体。 磁体的平均粒径可以小于或等于约150μm，碳含量小于或等于约400ppm，氧含量小于或等于约1000ppm。 通过铸造熔融合金制备永磁体。 在一个实施例中，铸造体在大于或等于约250℃的温度下进行热处理。或者，该材料可以在大于或等于约500℃的温度下铸造和热加工。最后， 该材料可以铸造，在大于或等于约500℃的温度下热加工，然后在大于或等于约250℃的温度下进行热处理。根据本发明提供的磁体是相对的 廉价的生产具有优异的性能特点。
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公开(公告)号：US5536334A
公开(公告)日：1996-07-16
申请号：US266995
申请日：1994-06-28
CPC分类号： H01F41/0273 , H01F1/057 , H01F1/0576
摘要： This invention relates to a permanent magnet having magnetic anisotropy given by means of a newly developed mechanical alignment and a manufacturing method thereof, and more particularly to a magnet comprising R (at least one rare-earth element selected from tile group consisting of Pr, Nd, Dy, Ce, La, Y and Tb), M (at least one transition metal selected from the group consisting of Fe, Co, Cu, Ag, Au, Ni and Zr) and X (at least one IIIb element of the periodic table selected from the group consisting of B, Ga and Al) and manufacturing method thereof, said alloy of R-M-X series, which composes basic component, are melted and cast, then cast ingot is hot-worked at the temperature above 500.degree. C. to remove or eliminate liquid phase of non-magnetic R-rich phase to concentrate magnetic phase, and to give magnetic anisotropy by means of mechanical alignment. It can provide magnet with excellent property comparable to that of the magnet provided by the conventional manufacturing method while applying cast hot-working heat treatment process which does not includes powdering process.
摘要翻译： 本发明涉及一种通过新开发的机械对准给出的具有磁各向异性的永磁体及其制造方法，更具体地说，涉及一种包含R（至少一种选自由Pr，Nd组成的瓦组的稀土元素） ，Dy，Ce，La，Y和Tb），M（选自Fe，Co，Cu，Ag，Au，Ni和Zr中的至少一种过渡金属）和X（至少一种周期性的IIIb元素 选自B，Ga和Al组的表）及其制造方法，将构成碱性组分的RMX系列的所述合金熔融浇铸，然后将铸锭在500℃以上的温度下热加工至 去除或消除非磁性富R相的液相以浓缩磁相，并通过机械对准产生磁各向异性。 它可以提供具有与通过常规制造方法提供的磁体相当的优异性能的磁体，同时施加不包括粉化过程的铸造热加工热处理工艺。
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