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1. 发明授权

US5174362A High-energy product rare earth-iron magnet alloys 失效
标题翻译：高能产品稀土铁磁体合金
公开(公告)号：US5174362A
公开(公告)日：1992-12-29
申请号：US765136
申请日：1985-08-13
申请人： John J. Croat
发明人： John J. Croat
IPC分类号： C22C45/02 , H01F1/057
CPC分类号： C22C45/02 , H01F1/057
摘要： The hard magnetic properties, including intrinsic coercivity, remanence and energy product of rapidly quenched, rare earth-transition metal alloys has been substantially increased by the addition of suitable amounts of the element boron. The preferred rare earth constituent elements are neodymium and praseodymium, and the preferred transition metal element is iron.
摘要翻译：通过加入合适量的元素硼，已经显着提高了急骤淬火的稀土 - 过渡金属合金的硬磁特性，包括固有矫顽力，剩磁和能量积。优选的稀土组成元素是钕和镨，优选的过渡金属元素是铁。

2. 发明授权

US4076561A Method of making a laminated rare earth metal-cobalt permanent magnet body 失效
标题翻译：制备层状稀土金属钴永磁体的方法
公开(公告)号：US4076561A
公开(公告)日：1978-02-28
申请号：US732924
申请日：1976-10-15
申请人： Robert W. Lee , John J. Croat
发明人： Robert W. Lee , John J. Croat
IPC分类号： H01F1/055 , H02K1/17 , H02K23/04 , H01F1/02
CPC分类号： H01F1/0557 , H02K1/17 , H02K23/04
摘要： In a preferred embodiment thin layers of rare earth metal-cobalt powder comprising an outer layer of RCo.sub.5 and a discrete transitional layer of R.sub.2 Co.sub.17 are compressed against an adjacent thicker layer of iron powder to form a laminated green compact, with the rare earth-cobalt powdered material being magnetically aligned. The green laminate body is then sintered to densify the rare earth-cobalt material layer to a body wherein the pores are substantially noninterconnecting. The laminate structure is then magnetized. By this method a strong rare earth-cobalt (RCo.sub.5) permanent magnet body is produced in which the rare earth-cobalt layer may be very thin (of the order of 1 to 2 millimeters) but of relatively large surface area and supported by a strong iron layer so as to be durable in handling, manufacturing and use.It is possible to press an RCo.sub.5 layer directly onto a powdered iron layer when the oxygen content of the iron is suitably low. The method will also produce an R.sub.2 Co.sub.17 -iron composite.
摘要翻译：在优选实施例中，包含RCo5的外层和R2Co17的离散过渡层的薄层的稀土金属钴粉末被压靠在相邻的较厚的铁粉层上以形成层压的生坯，其中稀土钴粉末材料磁性对准。然后将生坯层压体烧结以将稀土 - 钴材料层致密化为其中孔几乎不相互连接的主体。然后将层压结构磁化。通过这种方法，生产了一种强的稀土钴（RCo5）永磁体，其中稀土钴层可能非常薄（约1-2毫米），但表面积相对较大，并且由强的铁层，以便在处理，制造和使用方面具有耐用性。

3. 发明授权

US4902361A Bonded rare earth-iron magnets 失效
标题翻译：粘土稀土铁磁铁
公开(公告)号：US4902361A
公开(公告)日：1990-02-20
申请号：US827911
申请日：1986-02-10
申请人： Robert W. Lee , John J. Croat
发明人： Robert W. Lee , John J. Croat
IPC分类号： H01F1/057
CPC分类号： H01F1/0578
摘要： This invention relates to permanent bonded magnets of very finely crystalline, melt-spun, rare earth-iron alloys. The compacts are magnetically isotropic.
摘要翻译：本发明涉及非常精细结晶，熔纺的稀土 - 铁合金的永久性粘结磁体。压块是磁性各向同性的。

4. 发明授权

US4496395A High coercivity rare earth-iron magnets 失效
标题翻译：高矫顽力稀土铁磁铁
公开(公告)号：US4496395A
公开(公告)日：1985-01-29
申请号：US274070
申请日：1981-06-16
申请人： John J. Croat
发明人： John J. Croat
IPC分类号： C22C1/02 , B22D11/06 , C22C1/00 , C22C28/00 , C22C38/00 , C22C45/00 , C22C45/02 , C22C45/04 , H01F1/04 , H01F1/053 , H01F1/055 , C22C33/00
CPC分类号： H01F1/055 , C22C45/00 , C22C45/008
摘要： Ferromagnetic compositions having intrinsic magnetic coercivities at room temperature of at least 1,000 Oersteds are formed by the controlled quench of molten rare earth-transition metal alloys. Hard magnets may be inexpensively formed from the lower atomic weight lanthanide elements and iron.
摘要翻译：通过熔融稀土 - 过渡金属合金的受控淬火形成在室温下具有至少1,000奥斯特的固有磁性矫顽力的铁磁组合物。较低原子量的镧系元素和铁可能廉价地形成硬磁体。

5. 发明授权

US4347086A Selective magnetization of rare-earth transition metal alloys 失效
标题翻译：稀土过渡金属合金的选择性磁化
公开(公告)号：US4347086A
公开(公告)日：1982-08-31
申请号：US138240
申请日：1980-04-07
申请人： Andrew R. Chraplyvy , Jan F. Herbst , John J. Croat
发明人： Andrew R. Chraplyvy , Jan F. Herbst , John J. Croat
IPC分类号： H01F1/03 , H01F1/055 , H01F1/00
CPC分类号： H01F1/0306 , H01F1/055
摘要： An amorphous rare-earth transition metal body is provided that has integral, predetermined regions of hard and soft magnetism. A method is provided for heating portions of an amorphous rare-earth transition metal alloy body, in situ, to transform predetermined portions from a state of low magnetic coercivity to a highly magnetically coercive state.
摘要翻译：提供了一种非结晶的稀土过渡金属体，其具有硬和软磁性的整体的预定区域。提供了一种用于加热无定形稀土过渡金属合金体的部分的方法，以将预定部分从低磁矫顽力的状态转变为高磁力矫顽力。

6. 发明授权

US4312684A Selective magnetization of manganese-aluminum alloys 失效
标题翻译：锰铝合金的选择性磁化
公开(公告)号：US4312684A
公开(公告)日：1982-01-26
申请号：US138239
申请日：1980-04-07
申请人： Andrew R. Chraplyvy , John J. Croat , Jan F. Herbst
发明人： Andrew R. Chraplyvy , John J. Croat , Jan F. Herbst
IPC分类号： G11B5/64 , H01F1/04 , H01F1/00
CPC分类号： H01F1/04 , G11B5/64
摘要： A portion of a nonmagnetic body of manganese-aluminum based alloy is tempered in situ to a state of high magnetic coercivity. The magnetically coercive portion may be used, e.g., to store magnetically readable information or to provide a tailored permanent magnetic field for an electrical device.
摘要翻译：锰 - 铝基合金的非磁性体的一部分在原位回火至高矫顽磁力的状态。磁力矫顽部分可以用于例如存储磁性可读信息或为电气设备提供定制的永久磁场。

7. 发明授权

US5314548A Fine grained anisotropic powder from melt-spun ribbons 失效
标题翻译：来自熔纺丝带的细晶各向异性粉末
公开(公告)号：US5314548A
公开(公告)日：1994-05-24
申请号：US903067
申请日：1992-06-22
申请人： Viswanathan Panchanathan , Gregory P. Meisner , John J. Croat
发明人： Viswanathan Panchanathan , Gregory P. Meisner , John J. Croat
IPC分类号： B22F1/00 , B22F9/08 , C21D6/00 , C22C1/04 , C22C38/00 , H01F1/057 , H01F1/06 , H01F1/02
CPC分类号： C22C1/0441 , H01F1/0571 , H01F1/0573
摘要： A method is disclosed for producing a rapidly solidified, fine grained, magnetically anisotropic powder of the RE-Fe-B type. The rapidly solidified material is optimally quenched or slightly overquenched and is subjected to a hydrogen absorption-hydrogen desorption process that produces a fine grained material containing the essential magnetic phase RE.sub.2 TM.sub.14 B and an intergranular phase and is magnetically anisotropic.
摘要翻译：公开了一种用于生产RE-Fe-B型快速固化，细粒度，磁各向异性粉末的方法。快速凝固的材料被最佳地淬火或略微过度淬火，并经受氢吸收 - 氢解吸工艺，其产生含有必需磁相RE2TM14B和晶间相的细晶粒材料，并且是磁各向异性的。

8. 发明授权

US4802931A High energy product rare earth-iron magnet alloys 失效
标题翻译：高能产品稀土铁磁铁合金
公开(公告)号：US4802931A
公开(公告)日：1989-02-07
申请号：US544728
申请日：1983-10-26
申请人： John J. Croat
发明人： John J. Croat
IPC分类号： C22C45/02 , H01F1/057 , H01F1/04
CPC分类号： H01F1/057 , C22C45/02
摘要： Magnetically hard compositions having high values of coercivity, remanence and energy product contain rare earth elements, transition metal elements and boron in suitable proportions. The preferred rare earth elements are neodymium and praseodymium, and the preferred transition metal element is iron. The magnetic alloys have characteristic very finely crystalline microstructures.

9. 发明授权

US4756775A High energy product rare earth-iron magnet alloys 失效
标题翻译：高能量产品稀土磁铁合金
公开(公告)号：US4756775A
公开(公告)日：1988-07-12
申请号：US544728
申请日：1983-10-26
申请人： John J. Croat
发明人： John J. Croat
IPC分类号： C22C38/00 , C22C45/02 , H01F1/057 , H01F1/04
CPC分类号： H01F1/057 , C22C38/00 , C22C45/02
摘要： Magnetically hard compositions having high values of coercivity, remanence and energy product contain rare earth elements, transition metal elements and boron in suitable proportions. The preferred rare earth elements are neodymium and praseodymium, and the preferred transition metal element is iron. The magnetic alloys have characteristic very finely crystalline microstructures.
摘要翻译： C-3515具有高矫顽磁力和能量产品值的磁性组合物含有合适比例的稀土元素，过渡金属元素和硼。优选的稀土元素是钕和镨，优选的过渡金属元素是铁。磁性合金具有非常细微的结晶微结构。

10. 发明授权

US5352301A Hot pressed magnets formed from anisotropic powders 失效
标题翻译：由各向异性粉末形成的热压磁铁
公开(公告)号：US5352301A
公开(公告)日：1994-10-04
申请号：US979030
申请日：1992-11-20
申请人： Viswanathan Panchanathan , John J. Croat
发明人： Viswanathan Panchanathan , John J. Croat
IPC分类号： B22F3/14 , C22C33/02 , H01F1/057 , H01F1/08 , H01F41/02
CPC分类号： H01F1/0576 , B22F3/14
摘要： A method is provided for forming a high energy product, anisotropic, hot pressed iron-rare earth metal permanent magnet without the requirement for magnetic alignment during pressing or additional hot working steps. The method of this invention includes providing a quantity of anisotropic iron-rare earth metal particles and hot pressing the particles so as to form a substantially anisotropic permanent magnet. The pressed permanent magnet of this invention permits a greater variety of shapes as compared to conventional hot worked anisotropic permanent magnets. As a result, the magnetic properties and shape of the permanent magnet of this invention can be tailored to meet the particular needs of a given application.
摘要翻译：提供一种用于形成高能产物，各向异性，热压铁 - 稀土金属永磁体的方法，而不需要在压制或额外的热加工步骤中进行磁对准。本发明的方法包括提供一定数量的各向异性铁 - 稀土金属颗粒并热压颗粒以形成基本上各向异性的永磁体。与常规热加工各向异性永磁体相比，本发明的压制永磁体允许更多种形状。结果，本发明的永磁体的磁特性和形状可以被定制以满足给定应用的特定需要。

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