专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP3185252A1 RFeB-BASED SINTERED MAGNET 审中-公开
标题翻译：基于RFeB的烧结磁体
公开(公告)号：EP3185252A1
公开(公告)日：2017-06-28
申请号：EP15833977.0
申请日：2015-08-18
申请人： Intermetallics Co. Ltd.
发明人： UNE, Yasuhiro , KUBO, Hirokazu , SAGAWA, Masato , SUGIMOTO, Satoshi , MATSUURA, Masashi , NAKAMURA, Michihide
IPC分类号： H01F1/057 , B22F3/02 , H01F1/08 , H01F41/02 , C22C38/00
CPC分类号： H01F1/0577 , B22F3/02 , B22F3/16 , B22F9/023 , B22F2009/042 , B22F2009/044 , B22F2301/355 , B22F2304/05 , B22F2998/10 , C22C38/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/16 , H01F1/0573 , H01F41/0266 , H02K1/02
摘要： The problem addressed by the present invention is to provide an RFeB system sintered magnet which does not contain a heavy rare-earth element R H (Dy, Tb and Ho) in a practically effective amount and yet is suited for applications in which the magnet undergoes a temperature increase during its use. The RFeB system sintered magnet according to the present invention is an RFeB system sintered magnet containing at least one element selected from the group consisting of Nd and Pr as a rare-earth element R in addition to Fe and B while containing none of Dy, Tb and Ho, the magnet having a temperature characteristic value t (100-23) which satisfies -0.58 (100-23 ) (100-23) is defined by the following equation: t 100 − 23 = H cj 100 − H cj 23 100 − 23 × H cj 23 × 100 using H cj (23) which is the value of the coercivity at a temperature of 23°C and He(100) which is the value of the coercivity at a temperature of 100°C.
摘要翻译：本发明所要解决的问题是提供一种RFeB系烧结磁体，其不含重量稀土元素RH（Dy，Tb和Ho），其实用有效量，并且适用于磁体经历在使用过程中温度会升高。本发明的RFeB系烧结磁铁是除Fe，B以外，还含有Dy，Tb中的任一种以外，还含有选自Nd和Pr中的至少一种元素作为稀土类元素R的RFeB系烧结磁铁和Ho，所述磁体具有满足-0.58

2. 发明公开

EP2975619A1 METHOD FOR PRODUCING RFeB SINTERED MAGNET AND RFeB SINTERED MAGNET PRODUCED THEREBY 审中-公开
标题翻译：生产RFeB烧结磁体的方法和由其生产的RFeB烧结磁体
公开(公告)号：EP2975619A1
公开(公告)日：2016-01-20
申请号：EP14762415.9
申请日：2014-03-12
申请人： INTERMETALLICS CO., LTD.
发明人： UNE, Yasuhiro , KUBO, Hirokazu , SAGAWA, Masato , SUGIMOTO, Satoshi , MATSUURA, Masashi , NAKAMURA, Michihide
IPC分类号： H01F41/02 , B22F1/00 , B22F3/00 , B22F3/02 , B22F9/04 , C22C33/02 , C22C38/00 , H01F1/057 , H01F1/08
CPC分类号： H01F1/0577 , B22F1/0044 , B22F3/10 , B22F9/023 , B22F9/04 , B22F2009/048 , B22F2202/05 , B22F2999/00 , C22C33/02 , C22C33/0207 , C22C38/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/16 , C22C2202/02 , H01F41/0253 , B22F1/0018
摘要： The present invention is aimed at providing a method for producing, with a high degree of orientation, an RFeB system sintered magnet with the main phase grains having a grain size of 1 µm or less as well as a considerably equal grain size. A method for producing an RFeB system sintered magnet including the steps of preparing a shaped body oriented by a magnetic field and sintering the shaped body, wherein the shaped body is prepared using an alloy powder of an RFeB material having a particle size distribution with an average value of 1 µm or less in terms of a circle-equivalent diameter determined from a microscope image, the alloy powder obtained by pulverizing coarse particles having fine crystal grain, each coarse particle having grains of the RFeB material formed inside, the crystal grains having a crystal grain size distribution with an average value of 1 µm or less in terms of the circle-equivalent diameter determined from a microscope image, and 90 % by area or more of the crystal grains being separated from each other. Since this alloy powder is pulverized to individual grains, an RFeB system sintered magnet with a high degree of orientation can be produced.
摘要翻译：本发明的目的在于提供一种高度取向的RFeB系烧结磁体的制造方法，所述RFeB系烧结磁体的主相粒子的粒径为1μm以下，且晶粒尺寸大致相同。一种RFeB系烧结磁体的制造方法，其特征在于，包括以下工序：准备由磁场取向的成形体并烧结该成形体的工序，成形体使用RFeB材料的合金粉末，该合金粉末的粒度分布为平均通过粉碎具有微细晶粒的粗大颗粒而获得的合金粉末，所述粗大颗粒具有形成于内部的RFeB材料的颗粒，所述晶粒具有根据显微镜图像确定的圆当量直径的1μm或更小的值以显微镜图像求出的当量圆直径的平均值为1μm以下的平均晶粒直径分布和90％以上的晶粒分离。由于该合金粉末被粉碎成单独的颗粒，所以可以制造具有高取向度的RFeB系烧结磁体。

3. 发明公开

EP3244426A1 PROCESS FOR PRODUCING RFeB-BASED SINTERED MAGNET 审中-公开
标题翻译：生产基于RFeB的烧结磁体的过程
公开(公告)号：EP3244426A1
公开(公告)日：2017-11-15
申请号：EP16735085.9
申请日：2016-01-08
申请人： Intermetallics Co. Ltd.
发明人： SAGAWA, Masato , UNE, Yasuhiro , KUBO, Hirokazu , SUGIMOTO, Satoshi , MATSUURA, Masashi , NAKAMURA, Michihide
IPC分类号： H01F41/02 , H01F1/057
CPC分类号： H01F41/0266 , B22F3/10 , B22F9/04 , B22F2009/044 , B22F2202/05 , C22C28/00 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/16 , C22C2202/02 , H01F1/0536 , H01F1/057 , H01F41/02
摘要： A method for producing an RFeB system sintered magnet according to the present invention includes: a process (S1) of preparing a lump of HDDR-treated raw material alloy that contains a polycrystalline substance including crystal grains having an average grain size of 1 µm or less in terms of an equivalent circle diameter calculated from an electron micrograph image, by an HDDR treatment including steps of heating a lump of RFeB system alloy containing 26.5 to 29.5% by weight of the rare-earth element R, in a hydrogen atmosphere at a temperature between 700 and 1,000°C, and changing the atmosphere to vacuum while maintaining the temperature within a range from 750 to 900°C; a process (S2) of preparing a lump of raw material alloy having a high rare-earth content by heating the lump of HDDR-treated raw material alloy at a temperature between 700 and 950°C in a state where the HDDR-treated raw material alloy is in contact with a contact substance including a second alloy that contains the rare-earth element R at a higher content ratio than a content ratio of the rare-earth element R in the RFeB system alloy; a process (S3) of preparing raw material alloy powder by fine pulverization of the lump of raw material alloy having a high rare-earth content into powder having an average particle size of 1 µm or less; an orienting process (S4) including steps of placing the raw material alloy powder in a mold, and applying a magnetic field to the raw material alloy powder without conducting compression molding; and a sintering process (S5) including a step of heating the oriented raw material alloy powder at a temperature between 850 and 1,050°C.
摘要翻译：本发明的RFeB系烧结磁体的制造方法包括：准备HDDR处理原料合金块的工序（S1），其包含含有平均粒径1μm以下的晶粒的多晶体根据由电子显微镜照片计算出的当量圆直径，通过HDDR处理，包括在含有26.5-29.5重量％稀土元素R的RFeB体系合金块的情况下，在氢气氛中，在温度在700至1,000℃之间，并且将气氛改变为真空，同时将温度保持在750至900℃的范围内; 在HDDR处理原料合金块在700〜950℃的温度下加热，制备稀土类含量高的原料合金块的工序（S2）合金与包含第二合金的接触物质接触，所述第二合金包含比RFeB系合金中的稀土元素R的含量比率更高的稀土元素R; 通过将具有高稀土含量的原料合金块精细粉碎成平均粒径为1μm或更小的粉末来制备原料合金粉末的工序（S3）; 包括以下步骤的定向过程（S4）：将所述原料合金粉末放置在模具中，并且在未进行压缩成型的情况下对所述原料合金粉末施加磁场; 和包括在850℃和1050℃之间的温度下加热取向的原料合金粉末的步骤的烧结过程（S5）。

4. 发明授权

EP2879142B1 PROCESS FOR PRODUCING NdFeB-BASED SINTERED MAGNET 有权
标题翻译：用于生产钕铁硼类烧结磁体
公开(公告)号：EP2879142B1
公开(公告)日：2016-11-02
申请号：EP13822695.6
申请日：2013-06-27
申请人： INTERMETALLICS CO., LTD.
发明人： SAGAWA, Masato , MIZOGUCHI, Tetsuhiko , UNE, Yasuhiro
IPC分类号： H01F41/02 , B22F1/00 , B22F3/00 , B22F9/04 , H01F1/057 , H01F1/08 , C22C38/00
CPC分类号： H01F41/0266 , B22F3/10 , B22F3/16 , B22F2998/10 , C22C14/00 , C22C33/02 , C22C38/001 , C22C38/005 , C22C38/02 , C22C38/10 , C22C38/16 , C22C2202/02 , H01F1/0536 , H01F1/0573 , H01F1/0577 , H01F1/086 , H01F41/026 , B22F9/023 , B22F9/04
摘要： An objective of the present invention is to provide a method for producing a NdFeB system sintered magnet which, when used as a base material in a grain boundary diffusion method, allows R H to easily diffuse through a rare-earth rich phase, and whose base material itself has high coercive force. The method includes: a hydrogen pulverization process (Step S1), in which coarse powder of a NdFeB system alloy is prepared by coarsely pulverizing a lump of NdFeB system alloy by making this lump occlude hydrogen; a fine pulverization process (Step S2), in which fine powder is prepared by performing fine pulverization for further pulverizing the coarse powder; a filling process (Step S3), in which the fine powder is put into a filling container; an orienting process (Step S4), in which the fine powder as held in the filling container is oriented; and a sintering process (Step S5), in which the fine powder after the orienting process is sintered as held in the filling container. The processes from hydrogen pulverization through orienting are performed with neither dehydrogenation heating nor evacuation each for desorbing hydrogen occluded in the hydrogen pulverization process. The processes from hydrogen pulverization through sintering are performed in an oxygen-free atmosphere.

5. 发明公开

EP2879142A1 PROCESS FOR PRODUCING NdFeB-BASED SINTERED MAGNET 有权
标题翻译：钕铁硼钕铁硼钕铁硼
公开(公告)号：EP2879142A1
公开(公告)日：2015-06-03
申请号：EP13822695.6
申请日：2013-06-27
申请人： INTERMETALLICS CO., LTD.
发明人： SAGAWA, Masato , MIZOGUCHI, Tetsuhiko , UNE, Yasuhiro
IPC分类号： H01F41/02 , B22F1/00 , B22F3/00 , B22F9/04 , H01F1/057 , H01F1/08 , C22C38/00
CPC分类号： H01F41/0266 , B22F3/10 , B22F3/16 , B22F2998/10 , C22C14/00 , C22C33/02 , C22C38/001 , C22C38/005 , C22C38/02 , C22C38/10 , C22C38/16 , C22C2202/02 , H01F1/0536 , H01F1/0573 , H01F1/0577 , H01F1/086 , H01F41/026 , B22F9/023 , B22F9/04
摘要： An objective of the present invention is to provide a method for producing a NdFeB system sintered magnet which, when used as a base material in a grain boundary diffusion method, allows R H to easily diffuse through a rare-earth rich phase, and whose base material itself has high coercive force. The method includes: a hydrogen pulverization process (Step S1), in which coarse powder of a NdFeB system alloy is prepared by coarsely pulverizing a lump of NdFeB system alloy by making this lump occlude hydrogen; a fine pulverization process (Step S2), in which fine powder is prepared by performing fine pulverization for further pulverizing the coarse powder; a filling process (Step S3), in which the fine powder is put into a filling container; an orienting process (Step S4), in which the fine powder as held in the filling container is oriented; and a sintering process (Step S5), in which the fine powder after the orienting process is sintered as held in the filling container. The processes from hydrogen pulverization through orienting are performed with neither dehydrogenation heating nor evacuation each for desorbing hydrogen occluded in the hydrogen pulverization process. The processes from hydrogen pulverization through sintering are performed in an oxygen-free atmosphere.
摘要翻译：本发明的目的是提供一种NdFeB系烧结磁体的制造方法，其在晶界扩散法中作为基材使用时，容易通过富稀土相扩散，其基材本身具有很高的矫顽力。该方法包括：氢粉碎工序（步骤S1），其中NdFeB系合金的粗粉通过使该块堵塞氢而粗粉碎NdFeB系合金，精细粉碎法（步骤S2），其中通过进行细粉碎以进一步粉碎粗粉而制备细粉末; 填充处理（步骤S3），其中将细粉末放入填充容器中; 定向处理（步骤S4），其中保持在填充容器中的细粉末定向; 和烧结工序（步骤S5），其中定向处理后的细粉末保持在填充容器中进行烧结。通过定向氢氢粉碎的方法既不进行脱氢加热也不进行抽空，以解吸在氢气粉碎过程中吸收的氢。在无氧气氛中进行氢粉碎至烧结的工序。

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