专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US5766372A Method of making magnetic precursor for permanent magnets 失效
标题翻译：制造永磁体的磁性前体的方法
公开(公告)号：US5766372A
公开(公告)日：1998-06-16
申请号：US848283
申请日：1997-04-29
申请人： Setsuo Fujimura , Yutaka Matsuura , Masato Sagawa
发明人： Setsuo Fujimura , Yutaka Matsuura , Masato Sagawa
IPC分类号： C22C1/04 , H01F1/057 , C22C38/00
CPC分类号： C22C1/0441 , H01F1/057 , H01F1/0577
摘要： Magnetic materials comprising Fe, B, R (rare earth elements) and Co having a major phase of Fe--CO--B--R intermetallic compound(s) of tetragonal system, and sintered anisotropic permanent magnets consisting essentially of, by atomic percent, 8-30% R (at least one of rare earth elements inclusive of Y), 2-28% B, no less than 50% Co, and the balance being Fe with impurities. Those may contain additional elements M (Ti, Ni, Bi, V, Nb, Ta, Cr, Mo, W, Mn, Al, Sb, Ge, Sn, Zr, Hf) providing Fe--Co--B--R--M type materials and magnets.
摘要翻译：包含Fe，B，R（稀土元素）和具有四方晶系的Fe-CO-BR金属间化合物的主相的Co的磁性材料和基本上由原子百分比组成的烧结各向异性永久磁体8-30 ％R（包括Y的稀土元素中的至少一种），2-28％B，不低于50％的Co，余量为Fe和杂质。这些可以含有Fe-Co-B-R-M型材料和磁铁的附加元素M（Ti，Ni，Bi，V，Nb，Ta，Cr，Mo，W，Mn，Al，Sb，Ge，Sn，Zr，Hf）。

42. 发明授权

US5656100A Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet 失效
公开(公告)号：US5656100A
公开(公告)日：1997-08-12
申请号：US636905
申请日：1996-04-18
申请人： Kazuhiko Yamamoto , Yuichi Miyake , Chikara Okada
发明人： Kazuhiko Yamamoto , Yuichi Miyake , Chikara Okada
IPC分类号： B22F9/02 , C22C1/03 , C22C1/04 , H01F1/055 , H01F1/057 , H01F1/058 , H01F1/059
CPC分类号： H01F1/055 , B22F9/023 , C22C1/03 , C22C1/0441 , H01F1/057 , H01F1/0571 , H01F1/0573 , H01F1/058 , H01F1/059
摘要： An alloy ingot for permanent magnet consists essentially of rare earth metal and iron and optionally boron. The two-component alloy ingot contains 90 vol % or more of crystals having a crystal grain size along a short axis of 0.1 to 100 .mu.m and that along a long axis of 0.1 to 100 .mu.m. The three-component alloy ingot contains 90 vol % or more of crystals having a crystal grain size along a short axis of 0.1 to 50 .mu.m and that along a long axis of 0.1 to 100 .mu.m. The alloy ingot is produced by solidifying the molten alloy uniformly at a cooling rate of 10.degree. to 1000.degree. C./sec. at a sub-cooling degree of 10.degree. to 500.degree. C. A permanent magnet and anisotropic powders are produced from the alloy ingot.

43. 发明授权

US5538565A Rare earth cast alloy permanent magnets and methods of preparation 失效
标题翻译：稀土铸造合金永磁体及其制备方法
公开(公告)号：US5538565A
公开(公告)日：1996-07-23
申请号：US082190
申请日：1993-06-24
申请人： Koji Akioka , Osamu Kobayashi , Tatsuya Shimoda , Toshiyuki Ishibashi , Ryuichi Ozaki
发明人： Koji Akioka , Osamu Kobayashi , Tatsuya Shimoda , Toshiyuki Ishibashi , Ryuichi Ozaki
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。

44. 发明授权

US5472525A Nd-Fe-B system permanent magnet 失效
标题翻译： Nd-Fe-B系永久磁铁
公开(公告)号：US5472525A
公开(公告)日：1995-12-05
申请号：US217091
申请日：1994-01-28
申请人： Masaaki Tokunaga , Shigeho Tanigawa , Masahiro Takahashi
发明人： Masaaki Tokunaga , Shigeho Tanigawa , Masahiro Takahashi
IPC分类号： H01F1/057
CPC分类号： H01F1/0577 , H01F1/057
摘要： Disclosed is a Nd-Fe-B system magnet having coercive force iHc of 12 KOe or more and high maximum energy product (BH)max of 42 MGOe or more.The permanent magnet consists of 28 to 32 wt. % of Nd and Dy (Dy ranges from 0.4 to 3 wt. %), 6 wt. % or less of Co, 0.5 wt. % or less of Al, 0.9 to 1.3 wt. % of B, at least one of 0.05 to 2.0 wt. % of Nb and 0.05 to 2.0 wt. % of V, 0.02 to 0.5 wt. % of Ga, Fe and unavoidable impurities, having coercive force iHc of 12 KOe or more and maximum energy product (BH)max of 42 MGOe or more.
摘要翻译：公开了具有12KOe以上的矫顽力iHc和42MGee以上的高最大能量乘积（BH）max的Nd-Fe-B系磁体。永磁体由28〜32wt。 Nd和Dy的％（Dy为0.4〜3重量％），6重量％ Co％以下，0.5重量％以下。％以下的Al，0.9〜1.3重量％ B的百分比，0.05〜2.0重量％ Nb的含量为0.05〜2.0重量％。 V％，0.02〜0.5重量％的Ga，Fe和不可避免的杂质的％，矫顽力iHc为12KOe以上，最大能量积（BH）max为42MGOe以上。

45. 发明授权

US5217541A Permanent magnet and the method for producing the same 失效
标题翻译：永久磁铁及其制造方法
公开(公告)号：US5217541A
公开(公告)日：1993-06-08
申请号：US752895
申请日：1991-08-26
申请人： Tsung-Shune Chin , Shiang-Jiun Heh , Ken-Der Lin
发明人： Tsung-Shune Chin , Shiang-Jiun Heh , Ken-Der Lin
IPC分类号： H01F1/057 , H01F1/059
CPC分类号： H01F1/057 , H01F1/059
摘要： A permanent magnet essentially consisting of in weight percent, 60% to 68% at least one transition element by weight, 30% to 38% at least one rare earth element by weight, 0.1% to 1.5% nitrogen by weight, and 0.8% to 1.5% boron by weight is disclosed. A method for producing the permanent magnet containing at least one rear element, at least one rare earth element, nitrogen and boron includes melting, cooling, milling, magnetizing, and compacting the transition element, the rare earth element and boron to form a green compact, and then sintering the green compact in nitrogen atmosphere having a constant partial pressure for 1 to several hours to form the permanent magnet.
摘要翻译：一种永久磁铁，其主要由重量百分数，60％至68％的至少一种过渡元素，30％至38％的至少一种稀土元素，0.1重量％至1.5重量％的氮和0.8重量％公开了1.5重量％的硼。一种含有至少一个后元件，至少一种稀土元素，氮和硼的永磁体的制造方法包括熔融，冷却，研磨，磁化和压实过渡元素，稀土元素和硼以形成生坯，然后在具有恒定分压的氮气气氛中烧结1〜数小时的生坯，形成永磁体。

46. 发明授权

US5186761A Magnetic alloy and method of production 失效
标题翻译：磁性合金和生产方法
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
IPC分类号： C22C19/07 , C22F1/10 , H01F1/057 , H01F41/02
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。

47. 发明授权

US5162063A Magnetically anisotropic R-T-B magnet 失效
标题翻译： MAGNETICALLY ANISOTROPIC R-T-B磁铁
公开(公告)号：US5162063A
公开(公告)日：1992-11-10
申请号：US612379
申请日：1990-11-14
申请人： Makoto Shinoda , Katsunori Iwasaki , Shigeho Tanigawa , Masaaki Tokunaga
发明人： Makoto Shinoda , Katsunori Iwasaki , Shigeho Tanigawa , Masaaki Tokunaga
IPC分类号： B22F3/00 , B22F3/02 , B22F3/14 , B22F3/17 , C22C19/00 , C22C33/02 , C22C38/00 , H01F1/053 , H01F1/057
CPC分类号： B22F3/14 , H01F1/057 , H01F1/0576 , H01F1/0578
摘要： A magnetically anisotropic R-T-B magnet having crystal grains having aspect ratios of 2 or more and showing a substantially uniform maximum energy product distribution is produced by (a) rapidly quenching an alloy melt; (b) finely pulverizing the rapidly quenched alloy to provide magnetic powder; (c) mixing the magnetic powder with a carbon-containing additive; (d) coating the resulting mixture with a protective layer of a first lubricant such as BN substantially unreactive with the alloy components; (e) compressing it; (f) further coating the resulting compressed body with a second lubricant such as graphite or graphite+glass; and (g) further compressing it.
摘要翻译：通过（a）快速淬火合金熔体，制造具有纵横比为2以上且具有基本均匀的最大能量积分布的晶粒的各向异性R-T-B磁体。（b）将快速淬火的合金细粉碎以提供磁性粉末; （c）将磁粉与含碳添加剂混合; （d）用与合金组分基本上不反应的第一润滑剂如BN的保护层涂覆所得混合物; （e）压缩它; （f）用第二润滑剂如石墨或石墨+玻璃进一步涂覆所得的压缩体; 和（g）进一步压缩它。

48. 发明授权

US5096509A Anisotropic magnetic powder and magnet thereof and method of producing same 失效
标题翻译：各向异性磁性粉末及其制造方法
公开(公告)号：US5096509A
公开(公告)日：1992-03-17
申请号：US283910
申请日：1988-12-13
申请人： Minoru Endoh , Yasuto Nozawa , Katsunori Iwasaki , Shigeho Tanigawa , Masaaki Tokunaga
发明人： Minoru Endoh , Yasuto Nozawa , Katsunori Iwasaki , Shigeho Tanigawa , Masaaki Tokunaga
IPC分类号： H01F1/04 , B61C15/10 , C22C1/04 , H01F1/057
CPC分类号： H01F1/057 , B61C15/102 , C22C1/0441 , H01F1/0571 , H01F1/0577 , H01F1/0578
摘要： A the magnetically anisotropic magnetic powder having an average particle size of 1-1000 .mu.m and made from a magnetically anisotropic R-TM-B-Ga or R-TM-B-Ga-M alloy having an average crystal grain size of 0.01-0.5 .mu.m, wherein R represents one or more rare earth elements including Y, TM represents Fe which may be partially substituted by Co, B boron, Ga gallium, and M one or more elements selected from the group consisting of Nb, W, V, Ta, Mo, Si, Al, Zr, Hf, P, C and Zn. This is useful for anisotropic resin-bonded magnet with high magnetic properties.

49. 发明授权

US4983232A Anisotropic magnetic powder and magnet thereof and method of producing same 失效
标题翻译：各向异性磁粉及其磁铁及其制造方法
公开(公告)号：US4983232A
公开(公告)日：1991-01-08
申请号：US112875
申请日：1987-10-27
申请人： Minoru Endoh , Yasuto Nozawa , Katsunori Iwasaki , Shigeho Tanigawa , Masaaki Tokunaga
发明人： Minoru Endoh , Yasuto Nozawa , Katsunori Iwasaki , Shigeho Tanigawa , Masaaki Tokunaga
IPC分类号： H01F1/04 , B61C15/10 , C22C1/04 , H01F1/057
CPC分类号： H01F1/057 , B61C15/102 , C22C1/0441 , H01F1/0571 , H01F1/0577 , H01F1/0578
摘要： A the magnetically anisotropic magnetic powder having an average particle size of 1-1000 .mu.m and made from a magnetically anisotropic R-TM-B-Ga or R-TM-B-Ga-M alloy having an average crystal grain size of 0.01-0.5 .mu.m, wherein R represents one or more rare earth elements including Y, TM represents Fe which may be partially substituted by Co, B boron, Ga gallium, and M one or more elements selected from the group consisting of Nb, W, V, Ta, Mo, Si, Al, Zr, Hf, P, C and Zn. This is useful for anisotropic resin-bonded magnet with high magnetic properties.

50. 发明授权

US4908076A FE-B magnets containing Nd-Pr-Ce rare earth elements 失效
标题翻译：含有Nd-Pr-Ce稀土元素的FE-B磁体
公开(公告)号：US4908076A
公开(公告)日：1990-03-13
申请号：US127765
申请日：1987-12-02
申请人： Kenzaburou Iijima , Takeo Sata
发明人： Kenzaburou Iijima , Takeo Sata
IPC分类号： C22C33/02 , C22C38/00 , H01F1/053 , H01F1/057
CPC分类号： H01F1/057 , H01F1/0577
摘要： A rare earth magnet article of the Fe-B type is provided herein characterized by consisting essentially of the three rare earth elements Nd-Pr-Ce in combination within defined atom ratios of each in the formula:(Nd.sub.1-(p+q) Pr.sub.p Ce.sub.q).sub.x B.sub.y Fe.sub.1-(x+y)wherein 0.1.ltoreq.x.ltoreq.0.3, 0.02.ltoreq.y.ltoreq.0.09, 0.1.ltoreq.p.ltoreq.0.3 and 0.02.ltoreq.q.ltoreq.0.15.The magnet is prepared by a process which assures that the resultant magnet has a coercive force, Hc, of at least about 5kOe, and a residual magnetic flux density, Br, of at least about 10kG, which magnetic properties are substantially the same within the range of the sintering temperatures of the process.
摘要翻译：本文提供了一种Fe-B型稀土磁体制品，其特征在于基本上由三种稀土元素组成的Nd-Pr-Ce组成：式中：（Nd1-（p + q）PrpCeq ）xByFe1-（x + y）其中0.1≤x≤0.3,0.02≤y≤0.09,0.1≤n≤0.3,0.02≤t≤0.15。通过一种方法制备磁体，该方法确保得到的磁体具有至少约5kOe的矫顽力Hc，至少约10kG的残余磁通密度Br，其磁性能在该工艺的烧结温度范围。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式