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1. 发明专利

JP2009260338A Rare earth magnet 有权
标题翻译：稀土磁铁
公开(公告)号：JP2009260338A
公开(公告)日：2009-11-05
申请号：JP2009082008
申请日：2009-03-30
申请人： Tdk Corp , Tdk株式会社
发明人： FUJIWARA ATSUSHI , NAKANE MAKOTO , IWASAKI MAKOTO , KUNIEDA RYOTA
IPC分类号： H01F1/053 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To provide a rare earth magnet which has excellent magnetic properties, and can sufficiently suppress the variations in the magnetic properties resulting from the variations due to a content rate of B. SOLUTION: This rare earth magnet includes R (where R is at least one element selected from rare earth elements in which R includes Y), B, Al, Cu, Zr, Co, C, Si, and Fe as essential elements, wherein content rates to the total essential element are 25 to 32 mass% R, 0.84 to 0.98 mass% B, 0.03 to 0.25 mass% Al, 0.01 to 0.15 mass% Cu, 0.03 to 0.25 mass% Zr, ≤3 mass% Co (however, 0 mass% is not included), and 0.03 to 0.15 mass% C, 0.028 to 1.5 mass% Si, and valance Fe, respectively, and a content rate of O is ≤0.2 mass%. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异磁性能的稀土磁体，并且可以充分抑制由于B含量的变化引起的磁性能的变化。解决方案：该稀土磁体包括R（其中R是选自R包括Y的稀土元素中的至少一种元素），B，Al，Cu，Zr，Co，C，Si和Fe作为必需元素，其中含量达到基本要素元素为25〜32质量％R，0.84〜0.98质量％B，0.03〜0.25质量％的Al，0.01〜0.15质量％的Cu，0.03〜0.25质量％的Zr，≤3质量％的Co（但是，0质量％，0.03〜0.15质量％的C，0.028〜1.5质量％的Si和Fe的含量，O的含有率为0.2质量％。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2006295140A Rare earth permanent magnet 有权
标题翻译：稀土永磁体
公开(公告)号：JP2006295140A
公开(公告)日：2006-10-26
申请号：JP2006066733
申请日：2006-03-10
申请人： Tdk Corp , Tdk株式会社
发明人： NAKANE MAKOTO , KATO EIJI , ISHIZAKA TSUTOMU , OJI NAOTO
IPC分类号： H01F1/053 , C21D6/00 , C22C33/02 , C22C38/00 , H01F1/08
摘要： PROBLEM TO BE SOLVED: To obtain a rare earth permanent magnet exhibiting excellent magnetic characteristics such as residual magnetic flux and coercive force in which productivity can be enhanced by expanding both the sintering temperature width and the aging temperature width. SOLUTION: The rare earth permanent magnet has a composition of 25-35 wt.% of R (R is one kind or more than one kind selected from rare earth elements), 0-4 wt.% of Co (excluding 0), 0.5-4.5 wt.% of B, 0.02-0.6 wt.% of one kind or more than one kind selected from Cu and Al, 0.03-0.25 wt.% of Zr, 0.05-0.25 wt.% of Ga, 0.03-0.2 wt.% of O, and the reminder of Fe and inevitable impurities. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：为了获得具有优异的磁特性（例如剩余磁通量和矫顽力）的稀土永磁体，通过扩大烧结温度宽度和老化温度宽度，可提高生产率。解决方案：稀土永磁体的组成为R（R是选自稀土元素中的一种或多于一种）的25-35重量％，Co的0-4重量％（不包括0 ），0.5-4.5重量％的B，0.02-0.6重量％的一种或多于一种选自Cu和Al，0.03-0.25重量％的Zr，0.05-0.25重量％的Ga，0.03 -0.2重量％的O，以及Fe和不可避免的杂质的提醒。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2005286176A R-t-b-based sintered magnet and its manufacturing method 审中-公开
标题翻译：基于R-T-B的烧结磁体及其制造方法
公开(公告)号：JP2005286176A
公开(公告)日：2005-10-13
申请号：JP2004099450
申请日：2004-03-30
申请人： Tdk Corp , Tdk株式会社
发明人： NAKAMURA HIDEKI , YAMAMOTO TOMOMI , HIDAKA TETSUYA , KATO EIJI , NAKANE MAKOTO
IPC分类号： C22C33/02 , C21D6/00 , C22C38/00 , H01F1/053 , H01F1/08 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide an R-T-B-based sintered magnet that can obtain a high coercive force even when the oxygen content of the sintered body of the magnet is low and, at the same time, has a wide sintering temperature range. SOLUTION: The R-T-B-based sintered magnet is composed of a sintered body which is provided with main-phase crystal grains composed of an R 2 T 14 B phase (wherein, R is one, two, or more kinds of elements selected from among rare-earth elements and T is one, two, or more kinds of elements selected from among transition metal elements including Fe or Fe and Co), and a crystal boundary phase containing more R than the main-phase crystal grains do and contains Ta in the crystal boundary phase. It is desirable that the Ta exists in the crystal boundary phase as a Ta-Fe compound. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供即使当磁体的烧结体的氧含量低并且同时具有宽的烧结温度范围时也可以获得高的矫顽力的RTB型烧结磁体。解决方案：RTB型烧结磁体由烧结体组成，该烧结体设置有由R SB SB S 14 SBB相组成的主相晶粒（其中，R是从稀土元素中选出的一种，两种以上的元素，T是选自Fe，Fe，Co的过渡金属元素中的1种，2种以上的元素，Co）相含有比主相晶粒多的R相，并且在晶界边界相中含有Ta。作为Ta-Fe化合物，优选在晶界相中存在。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2005286174A R-t-b-based sintered magnet 审中-公开
标题翻译：基于R-T-B的烧结磁体
公开(公告)号：JP2005286174A
公开(公告)日：2005-10-13
申请号：JP2004099448
申请日：2004-03-30
申请人： Tdk Corp , Tdk株式会社
发明人： NAKAMURA HIDEKI , HIDAKA TETSUYA , KATO EIJI , NAKANE MAKOTO , YAMAMOTO TOMOMI
IPC分类号： B22F3/00 , C22C38/00 , H01F1/053 , H01F1/08
摘要： PROBLEM TO BE SOLVED: To provide an R-T-B-based sintered magnet that can obtain a high coercive force by constituting the magnet in a fine crystalline structure even when the oxygen content of the sintered body of the magnet is low and, at the same time, has a wide sintering temperature width. SOLUTION: The R-T-B-based sintered magnet is composed of the sintered body which is provided with main-phase crystal grains composed of an R 2 T 14 B phase (wherein, R is one, two, or more kinds of elements selected from among rare-earth elements and T is one, two, or more kinds of elements selected from among transition metal elements including Fe or Fe and Co) and a grain boundary phase containing more R than the main-phase crystal grains do and contains an Nb-Fe compound in the crystal boundary phase. The R-T-B-based sintered magnet can be obtained by causing an alloy for forming the crystal boundary phase to contain Nb at the time of obtaining the R-T-B sintered magnet by using the mixing method. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供即使当磁体的烧结体的氧含量低时也可以通过将微细的结晶结构构成磁体而获得高的矫顽力的RTB型烧结磁体，并且在同时，具有较宽的烧结温度宽度。解决方案：RTB型烧结磁体由烧结体构成，该烧结体设有由R SB SBS 14 SBB相组成的主相晶粒（其中，R是选自稀土元素中的一种，两种以上的元素，T是选自包括Fe或Fe和Co的过渡金属元素中的一种，两种以上的元素）和晶界相含有比主相晶粒多的R，并且在晶界边界相中含有Nb-Fe化合物。 R-T-B系烧结磁体可以通过使用混合法获得R-T-B烧结磁体时，通过使形成晶界相的合金含有Nb来获得。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2004265907A Hard magnetic composition 审中-公开
公开(公告)号：JP2004265907A
公开(公告)日：2004-09-24
申请号：JP2003019446
申请日：2003-01-28
申请人： Tdk Corp , Tdk株式会社
发明人： SAKAMOTO TOKUJI , NAKANE MAKOTO , NAKAMURA HIDEKI , FUKUNO AKIRA
IPC分类号： C22C38/00 , H01F1/04 , H01F1/053 , H01F1/058 , H01F1/059
CPC分类号： H01F1/0593 , H01F1/058
摘要： PROBLEM TO BE SOLVED: To provide a hard magnetic composition which is capable of easily producing a ThMn 12 phase even if Nd is used as a rare earth element. SOLUTION: The hard magnetic composition is represented by formula, R(Fe 100-y-w Co w Ti y ) x Si z A v (wherein, R denotes one or more rare earth elements containing Y, and 50 mol% or above of R is Nd; and A is N and/or C), and the mol ratios of the component elements in the formula are as follows: x is 10 to 12.5, y is (8.3-1.7×z) to 12, z is 0.2 to 2.3, v is 0.1 to 3, and w is 0 to 30, and (the sum of mol ratios of Fe, Co, Ti, and Si)/(mol ratio of R) is so set as to be above 12, whereby a single-phase structure having a ThMn 12 phase can be obtained. COPYRIGHT: (C)2004,JPO&NCIPI

6. 发明专利

JP2007250605A Method for manufacturing r-t-b-based rare-earth permanent magnet 审中-公开
标题翻译：用于制造基于R-T-B的稀土永磁体的方法
公开(公告)号：JP2007250605A
公开(公告)日：2007-09-27
申请号：JP2006068538
申请日：2006-03-14
申请人： Tdk Corp , Tdk株式会社
发明人： NAKANE MAKOTO , BABA FUMITAKA , OTSUKA KIWA
IPC分类号： H01F1/053 , C22C33/02 , C22C38/00 , H01F1/08
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing an R-T-B-based rare-earth permanent magnet for improving mass-productivity of a high performance R-T-B-besed rare-earth permanent magnet. SOLUTION: The manufacturing method includes the steps of manufacturing an R-T-B alloy that is mainly formed of R 2 T 14 B phase with inclusion of Co, Zr, and Cu, and an R-T alloy that is mainly formed of R and T; obtaining a mixture formed of powder of R-T-B alloy and powder of R-T alloy; producing a mold of the predetermined shape formed of the mixture; and obtaining a sintered material by sintering the mold. In the step of obtaining the mixture, ≥50% Co included in the mixture is supplied from powder of the R-T-B alloy. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于制造用于提高高性能R-T-B系稀土永磁体的批量生产率的R-T-B系稀土永磁体的制造方法。解决方案：制造方法包括以下步骤：制造主要由含有Co，Zr和Cu的R 2 SB SB 14相的RTB合金，和主要由R和T形成的RT合金; 得到由R-T-B合金粉末和R-T合金粉末组成的混合物; 制造由混合物形成的预定形状的模具; 并通过烧结模具获得烧结材料。在获得混合物的步骤中，混合物中包含的≥50％的Co由R-T-B合金的粉末供应。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2006210450A R-t-b series sintered magnet 有权
标题翻译： R-T-B系列烧结磁铁
公开(公告)号：JP2006210450A
公开(公告)日：2006-08-10
申请号：JP2005017583
申请日：2005-01-26
申请人： Tdk Corp , Tdk株式会社
发明人： IWASAKI MAKOTO , NAKANE MAKOTO , ISHIZAKA TSUTOMU
IPC分类号： H01F1/08 , C22C33/02 , C22C38/00 , C22C38/16 , H01F1/053
摘要： PROBLEM TO BE SOLVED: To provide an R-T-B series sintered magnet which can improve a coercive force and a mechanical strength. SOLUTION: The R-T-B series sintered magnet includes a main phase which includes an R 2 T 14 B compound (wherein R is one type or two types or more of rare earth elements, and T is a main phase which includes one type or two types or more of transition metallic elements including Fe or Fe and Co as indispensable), and a grain boundary phase including more R than the main phase. They are heavy rare earth elements as the R. Moreover, they are composed of sintered material including Cu and/or Co. In the grain boundary phase, the high concentration region of the heavy rare earth elements and Cu, and/or the heavy rare earth elements of Co exist in a distinct position. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：提供能够提高矫顽力和机械强度的R-T-B系烧结磁体。解决方案：RTB系列烧结磁体包括主相，其包括R SB SB 2化合物（其中R是稀有的一种或两种或更多种类型的化合物 T是主要相，其中包括一种或两种以上的过渡金属元素，包括Fe或Fe和Co作为不可缺少的），以及包含比主相更多的R的晶界相。它们是作为R的重稀土元素。此外，它们由包括Cu和/或Co的烧结材料组成。在晶界相中，重稀土元素和Cu的高浓度区域和/或重稀土元素 Co的地球元素存在于不同的位置。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2006100434A Method of manufacturing r-t-b based rare earth permanent magnet 审中-公开
标题翻译：制造R-T-B基稀土永磁体的方法
公开(公告)号：JP2006100434A
公开(公告)日：2006-04-13
申请号：JP2004282689
申请日：2004-09-28
申请人： Tdk Corp , Tdk株式会社
发明人： NAKANE MAKOTO , KATO EIJI , ISHIZAKA TSUTOMU
IPC分类号： H01F1/08 , B22F3/00 , C22C33/02 , C22C38/00 , H01F1/053 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To optimize addition modes of M element and Tb which suppress grain growth in sintering process when manufacturing R-T-B based rare earth permanent magnet of which oxygen content is reduced by a mixing method. SOLUTION: The R-T-B based rare earth permanent magnet consists of a sintered body of which R 2 T 14 B 1 compound (R always contains Tb, R includes Y, T requires Fe or Fe and Co) is magnetic phase, with M element (M is one or more kinds of Zr, Nb, and Hf) contained in it. The manufacturing method includes a process for producing a molding containing particles consisting of main phase forming alloy containing R 2 T 14 B 1 compound and the particles consisting of grain boundary phase forming alloy whose main component is R and T, and a process for sintering the molding. Tb and M elements are supplied in a mode other than such mode as supplied from the main phase forming alloy containing Tb and M elements. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了优化当通过混合方法制造氧含量降低的R-T-B系稀土永磁体时，优化在烧结过程中抑制晶粒生长的M元素和Tb的添加模式。解决方案：基于RTB的稀土永磁体由其中R 2 1 B 1 化合物（R总是）的烧结体组成含有Tb，R包括Y，T要求Fe或Fe和Co）是磁性相，其中包含M元素（M是一种或多种Zr，Nb和Hf）。该制造方法包括一种制造含有由含有R 2 SB SB-12 / SBB-SB 1化合物的主相成形合金构成的颗粒的成型体的方法，其主要成分为R和T的晶界相成形合金和烧结成型方法。 Tb和M元素以不同于由含有Tb和M元素的主相成形合金提供的模式供给。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2006278990A Rare earth permanent magnet 有权
标题翻译：稀土永磁体
公开(公告)号：JP2006278990A
公开(公告)日：2006-10-12
申请号：JP2005100105
申请日：2005-03-30
申请人： Tdk Corp , Tdk株式会社
发明人： NAKANE MAKOTO , KATO EIJI , ISHIZAKA TSUTOMU , OJI NAOTO
IPC分类号： H01F1/053 , B22F3/00 , C22C33/02 , C22C38/00 , H01F1/08
摘要： PROBLEM TO BE SOLVED: To provide a rare earth permanent magnet that has good magnetic properties such as residual magnetic flux density and coercive force, suppresses particle growth in a sintering process, and extends a range of sintering temperature. SOLUTION: This permanent magnet contains compositions such as Tb: 0-10 mass% (not including "0"), R: 25 mass%-35 mass% (R comprises two kinds or more selected from rare earth elements and contains at least the above Tb), Co: 0-2 mass%, B: 0.5 mass%-4.5 mass%, one kind or two kinds or more selected from Cu and Al: 0.02 mass%-0.5 mass%, Zr: 0.03 mass%-0.25 mass%, Zn: 0.02 mass%-0.05 mass%, O:0.03 mass%-0.2 mass% and Fe and inevitable impurity:remnant. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有良好的磁特性（例如剩余磁通密度和矫顽力）的稀土永磁体，抑制烧结过程中的颗粒生长，并延伸一定范围的烧结温度。该永久磁铁含有Tb：0〜10质量％（不包括“0”），R：25质量％-35质量％（R包含从稀土元素中选出的2种以上，含有至少上述Tb），Co：0-2质量％，B：0.5质量％-4.5质量％，选自Cu和Al中的一种或两种以上：0.02质量％-0.5质量％，Zr：0.03质量％％-0.25质量％，Zn：0.02质量％-0.05质量％，O：0.03质量％-0.2质量％，Fe和不可避免的杂质：残留物。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2006041507A Sintered magnet 审中-公开
标题翻译：烧结磁铁
公开(公告)号：JP2006041507A
公开(公告)日：2006-02-09
申请号：JP2005194532
申请日：2005-07-04
申请人： Tdk Corp , Tdk株式会社
发明人： ISHIZAKA TSUTOMU , SAKAMOTO TOKUJI , HIDAKA TETSUYA , UCHIDA SHINYA , KATO EIJI , NAKANE MAKOTO
IPC分类号： H01F1/08 , B22F3/00 , C22C33/02 , C22C38/00 , H01F1/053
摘要： PROBLEM TO BE SOLVED: To provide a Nd 2 Fe 14 B sintered magnet having a high maximum energy integral. SOLUTION: The sintered magnet has a texture including R 2 Fe 14 B (R represents at least a kind of rare-earth element and includes Nd and/or Pr as essential elements) crystal grains and a grain boundary existing on a boundary between the crystal grains. Composition analyses are conducted on a double-crystal grain boundary existing on a boundary between two adjacent crystal grains and a polycrystal grain boundary existing on a boundary among three or more adjacent crystal grains. For each of the crystal grain boundaries, Cu/R is determined which is a ratio of an amount of Cu to an amount of the element R and C M /C 2 ≤0.7 is established where C 2 represents Cu/R of the double-crystal grain boundary and C M represents Cu/R of the polycrystal grain boundary. Thus, it is possible to obtain a characteristic with the maximum energy integral of 400 kJ/m 3 or larger. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供具有高最大能量积分的Nd 2 SB <14> SBB烧结磁体。＆lt; P＆gt;解决方案：烧结磁体具有包括R SB 2，SB 17，B的结构（R表示至少一种稀土元素，包括Nd和/或Pr 作为必需元素）晶粒和存在于晶粒之间的边界上的晶界。组成分析在存在于两个相邻晶粒之间的边界上的双晶晶界和存在于三个或更多个相邻晶粒中的边界上的多晶晶界之间进行。对于每个晶粒边界，确定Cu / R，其是Cu的量与元素R和C的量的比率.C / SB 0.7，其中C 2 表示双晶晶界的Cu / R，C M 表示多晶晶界的Cu / R。因此，可以获得最大能量积分为400kJ / m 3以上的特性。版权所有（C）2006，JPO＆NCIPI

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