发明公开
EP2977998A1 RFeB-BASED MAGNET PRODUCTION METHOD, RFeB-BASED MAGNET, AND COATING MATERIAL FOR GRAIN BOUNDARY DIFFUSION PROCESS
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基本信息:
- 专利标题： RFeB-BASED MAGNET PRODUCTION METHOD, RFeB-BASED MAGNET, AND COATING MATERIAL FOR GRAIN BOUNDARY DIFFUSION PROCESS
- 专利标题（中）：工艺制造用于晶界扩散处理RFeB磁铁RFeB磁铁及涂层材料
- 申请号：EP14768462.5 申请日：2014-03-13
- 公开(公告)号：EP2977998A1 公开(公告)日：2016-01-27
- 发明人： SAGAWA, Masato , TAKAGI, Shinobu , HASHINO, Hayato
- 申请人： INTERMETALLICS CO., LTD. , Daido Steel Co.,Ltd.
- 申请人地址： 1642-144, Nasubigawa, Nakatsugawa-shi, Gifu 509-9132 JP
- 专利权人： INTERMETALLICS CO., LTD.,Daido Steel Co.,Ltd.
- 当前专利权人： DAIDO STEEL CO., LTD., NAGOYA-SHI, JP
- 当前专利权人地址： DAIDO STEEL CO., LTD., NAGOYA-SHI, JP
- 代理机构： Hoeger, Stellrecht & Partner Patentanwälte mbB
- 优先权： JP2013055737 20130318
- 国际公布： WO2014148353 20140925
- 主分类号： H01F41/02
- IPC分类号： H01F41/02 ; B22F1/00 ; B22F3/24 ; B22F9/00 ; C22C38/00 ; H01F1/057 ; H01F1/08
摘要：
The present invention addresses the problem of providing a method for producing an RFeB system magnet with high coercivity by preventing a coating material from peeling off the surface of a base material during a grain boundary diffusion treatment. Provided is a method for producing an R L 2 Fe 14 B system magnet which is a sintered magnet or a hot-deformed magnet containing, as the main rare-earth element, a light rare-earth element R L which is at least one of the two elements ofNd and Pr, the method including the steps of: applying, to a surface of a base material M of the R L 2 Fe 14 B system magnet, a coating material 10 prepared by mixing a silicone grease 11 and an R H -containing powder 14 containing a heavy rare-earth element R H composed of at least one element selected from the group of Dy, Tb and Ho; and heating the base material M together with the coating material. The silicone having a siloxane bond prevents the coating material 10 from peeling off the surface of the base material M during the heating process. The improved adhesion of the coating material 10 to the base material M facilitates transfer of R H into the grain boundaries of the base material M, whereby the coercivity is increased.
摘要（中）：
本发明解决了这个问题，提供的用于通过从晶界扩散处理过程中剥离的基体材料的表面防止涂层材料在与高矫顽力RFeB体系磁铁制造的方法。 提供了一种用于在RL 2制备的Fe 14 B系永磁体的方法的所有其是烧结磁体或热变形的磁体含有作为主要的稀土类元素，轻稀土类元素RL的所有这是两者中的至少一个 元件中Nd和Pr，该方法包括以下步骤：施加到RL 2的Fe 14 B系磁体，通过混合硅润滑脂11和含至RH粉末14制备的涂层材料10的基材M的表面 含有RH由选自的Dy，Tb和Ho组成中选择的至少一种元素的重稀土类元素; 并用涂层材料一起加热基材M。 具有硅氧烷键的硅酮从在加热过程中剥离基材M的表面防止了涂层材料10。 涂层材料10向基材M的改进的粘合性便于R H的转移到基材M的晶界，由此矫顽力增加。
公开/授权文献:
IPC结构图谱:
| H | 电学 |
| --H01 | 基本电气元件 |
| ----H01F | 磁体；电感；变压器；磁性材料的选择 |
| ------H01F41/00 | 专用于制造或装配包含在本小类的装置的设备或方法 |
| --------H01F41/02 | .用于制造磁芯、线圈或磁体的 |