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1.发明授权Material for magnetostrictive sensors and other applications based on ferrite materials 失效基于铁氧体材料的磁致伸缩传感器和其他应用的材料公开(公告)号：US06352649B1
公开(公告)日：2002-03-05
申请号：US09550454
申请日：2000-04-17
申请人： R. William McCallum , John E. Snyder , Kevin W. Dennis , Carl R. Schwichtenberg , David C. Jiles
发明人： R. William McCallum , John E. Snyder , Kevin W. Dennis , Carl R. Schwichtenberg , David C. Jiles
IPC分类号： C22C2912
摘要： The present invention provides magnetostrictive composites that include an oxide ferrite and metallic binders which provides mechanical properties that make the magnetostrictive compositions effective for use as sensors and actuators.
摘要翻译： 本发明提供了包含氧化物铁氧体和金属粘合剂的磁致伸缩复合材料，其提供使磁致伸缩组合物有效地用作传感器和致动器的机械性能。
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2.发明授权Material for magnetostrictive sensors and other applications based on ferrite materials 失效基于铁氧体材料的磁致伸缩传感器和其他应用的材料
公开(公告)号：US6093337A
公开(公告)日：2000-07-25
申请号：US164981
申请日：1998-10-01
申请人： R. William McCallum , John E. Snyder , Kevin W. Dennis , Carl R. Schwichtenberg , David C. Jiles
发明人： R. William McCallum , John E. Snyder , Kevin W. Dennis , Carl R. Schwichtenberg , David C. Jiles
摘要： The present invention provides magnetostrictive compositions that include an oxide ferrite which provides mechanical properties that make the magnetostrictive compositions effective for use as sensors and actuators.
摘要翻译： 本发明提供磁致伸缩组合物，其包括氧化物铁氧体，其提供使磁致伸缩组合物有效用作传感器和致动器的机械性能。
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公开(公告)号：US5690889A
公开(公告)日：1997-11-25
申请号：US605324
申请日：1996-02-15
申请人： R. William McCallum , Timothy W. Ellis , Kevin W. Dennis , Robert J. Hofer , Daniel J. Branagan
发明人： R. William McCallum , Timothy W. Ellis , Kevin W. Dennis , Robert J. Hofer , Daniel J. Branagan
CPC分类号： H01F1/057 , C01B35/128 , C22B59/00 , C22C1/053
摘要： A method of making a rare earth compound, such as a earth-transition metal permanent magnet compound, without the need for producing rare earth metal as a process step, comprises carbothermically reacting a rare earth oxide to form a rare earth carbide and heating the rare earth carbide, a compound-forming reactant (e.g. a transition metal and optional boron), and a carbide-forming element (e.g. a refractory metal) that forms a carbide that is more thermodynamically favorable than the rare earth carbide whereby the rare earth compound (e.g. Nd.sub.2 Fe.sub.14 B or LaNi.sub.5) and a carbide of the carbide-forming element are formed.
摘要翻译： 制造稀土类化合物如土 - 过渡金属永磁体化合物的方法，不需要制备稀土金属作为工艺步骤，包括使稀土氧化物碳化热反应形成稀土碳化物并加热稀土 碳化物，化合物形成反应物（例如过渡金属和任选的硼）和形成碳化物的碳化物形成元素（例如难熔金属），其形成比稀土化碳更热力学上有利的碳化物，由此稀土化合物 例如Nd2Fe14B或LaNi5），并且形成碳化物形成元件的碳化物。
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公开(公告)号：US5240513A
公开(公告)日：1993-08-31
申请号：US593943
申请日：1990-10-09
CPC分类号： H01F1/0574 , B22F1/02 , H01F1/0572 , H01F1/0577 , H01F1/0578
摘要： An isotropic permanent magnet is made by mixing a thermally responsive, low viscosity binder and atomized rare earth-transition metal (e.g., iron) alloy powder having a carbon-bearing (e.g., graphite) layer thereon that facilitates wetting and bonding of the powder particles by the binder. Prior to mixing with the binder, the atomized alloy powder may be sized or classified to provide a particular particle size fraction having a grain size within a given relatively narrow range. A selected particle size fraction is mixed with the binder and the mixture is molded to a desired complex magnet shape. A molded isotropic permanent magnet is thereby formed. A sintered isotropic permanent magnet can be formed by removing the binder from the molded mixture and thereafter sintering to full density.
摘要翻译： 通过混合热响应性低粘度粘合剂和在其上具有含碳（例如石墨）层的雾化稀土过渡金属（例如铁）合金粉末来制备各向同性永磁体，其有利于粉末颗粒的润湿和结合 通过粘合剂。 在与粘合剂混合之前，可以将雾化合金粉末的尺寸或分级，以提供具有在给定的相对较窄范围内的晶粒尺寸的特定粒度分数。 将选定的粒度级分与粘合剂混合，并将混合物模制成所需的复合磁体形状。 由此形成各向同性永久磁铁。 烧结的各向同性永磁体可以通过从模塑混合物中除去粘合剂，然后烧结成全密度而形成。
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公开(公告)号：US5242508A
公开(公告)日：1993-09-07
申请号：US869897
申请日：1992-04-15
CPC分类号： B22F9/082 , B22F1/02 , H01F1/0572 , H01F1/0574 , H01F1/0576
摘要： A method for making an isotropic permanent magnet comprises atomizing a melt of a rare earth-transition metal alloy (e.g., an Nd--Fe--B alloy enriched in Nd and B) under conditions to produce protectively coated, rapidly solidified, generally spherical alloy particles wherein a majority of the particles are produced/size classified within a given size fraction (e.g., 5 to 40 microns diameter) exhibiting optimum as-atomized magnetic properties and subjecting the particles to concurrent elevated temperature and elevated isotropic pressure for a time effective to yield a densified, magnetically isotropic magnet compact having enhanced magnetic properties and mechanical properties.
摘要翻译： 制造各向同性永磁体的方法包括在条件下使稀土 - 过渡金属合金（例如，富含Nd和B的Nd-Fe-B合金）的熔体雾化以产生保护性涂覆的，快速凝固的，通常为球形的合金颗粒 其中大部分颗粒被生产/尺寸分类为显示最佳的雾化磁性能的给定尺寸级分（例如，5至40微米直径），并使颗粒同时升高温度和提高的各向同性压力达到有效产生的时间 具有增强的磁特性和机械性能的致密化的磁各向同性磁体。
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公开(公告)号：US5470401A
公开(公告)日：1995-11-28
申请号：US97442
申请日：1993-07-26
CPC分类号： H01F1/0574 , B22F1/02 , H01F1/0572 , H01F1/0577 , H01F1/0578
摘要： An isotropic permanent magnet is made by mixing a thermally responsive, low viscosity binder and atomized rare earth-transition metal (e.g., iron) alloy powder having a carbon-bearing (e.g., graphite) layer thereon that facilitates wetting and bonding of the powder particles by the binder. Prior to mixing with the binder, the atomized alloy powder may be sized or classified to provide a particular particle size fraction having a grain size within a given relatively narrow range. A selected particle size fraction is mixed with the binder and the mixture is molded to a desired complex magnet shape. A molded isotropic permanent magnet is thereby formed. A sintered isotropic permanent magnet can be formed by removing the binder from the molded mixture and thereafter sintering to full density.
摘要翻译： 通过混合热响应性低粘度粘合剂和在其上具有含碳（例如石墨）层的雾化稀土过渡金属（例如铁）合金粉末来制备各向同性永磁体，其有利于粉末颗粒的润湿和结合 通过粘合剂。 在与粘合剂混合之前，可以将雾化合金粉末的尺寸或分级，以提供具有在给定的相对较窄范围内的晶粒尺寸的特定粒度分数。 将选定的粒度级分与粘合剂混合，并将混合物模制成所需的复合磁体形状。 由此形成各向同性永久磁铁。 烧结的各向同性永磁体可以通过从模塑混合物中除去粘合剂，然后烧结成全密度而形成。
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7.发明申请公开(公告)号：US20120001711A1
公开(公告)日：2012-01-05
申请号：US13068572
申请日：2011-05-13
申请人： Ralph W. McCallum , Iver E. Anderson , Youwen Xu , Matthew J. Kramer , Kevin W. Dennis , Wei Tang
发明人： Ralph W. McCallum , Iver E. Anderson , Youwen Xu , Matthew J. Kramer , Kevin W. Dennis , Wei Tang
CPC分类号： H01F7/02 , C22C1/02 , H01F1/0577 , H01F1/0578
摘要： A permanent magnet operable above about 125 C to about 200 C has a major phase represented by MRE2(Fe, Co)14B wherein said MRE comprises two or more rare earth elements selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y wherein one of the rare earth elements is chosen from one or more of La, Ce, Pr, Nd, Eu, and Gd but in an amount not exceeding 45 atomic % of the magnet and wherein at least 50% atomic % of MRE comprises Y and at least one of Dy, Ho, and Tb. The total content of the at least one of Dy, Ho, and Tb is in the range of 0 to 4 weight % of the total mass of the magnet.
摘要翻译： 在约125℃至约200℃可操作的永磁体具有由MRE2（Fe，Co）14B表示的主相，其中所述MRE包含两种或更多种选自La，Ce，Pr，Nd，Sm的稀土元素 ，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb，Lu和Y，其中稀土元素中的一种选自La，Ce，Pr，Nd，Eu和Gd中的一种或多种， 不超过磁体的45原子％，其中MRE的至少50％原子％包含Y和Dy，Ho和Tb中的至少一种。 Dy，Ho和Tb中的至少一种的总含量在磁体总质量的0〜4重量％的范围内。
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