公开(公告)号：US20100194508A1

公开(公告)日：2010-08-05

申请号：US12695585

申请日：2010-01-28

申请人： Jun HAGIWARA ,  Takeshi Nagai ,  Toshiyasu Komatsu ,  Yasutaka Shintani ,  Makoto Kubota ,  Tadao Nishiyama ,  Hidenori Okada

发明人： Jun HAGIWARA ,  Takeshi Nagai ,  Toshiyasu Komatsu ,  Yasutaka Shintani ,  Makoto Kubota ,  Tadao Nishiyama ,  Hidenori Okada

IPC分类号： H01F7/02

CPC分类号： H02K1/02 ,  C25D3/16 ,  C25D7/001 ,  H01F41/026 ,  H01F41/26 ,  H02K1/276 ,  H02K15/03

摘要： There is provided a rare-earth permanent magnet optimized to an IPM type motor for a car, capable of improving corrosion resistance, abrasion resistance, and impact resistance. The rare-earth permanent magnet 16 is configured by forming an electroplated Ni coating film 21, of which thickness is 15 μm or more and 30 μm or less and of which shape is a columnar crystal structure, on a surface of a R—Fe—B system permanent magnet (R is a rare-earth element) 22. The electroplated Ni coating film 21 has a high hardness region, where the Vickers hardness is 300 or more and 600 or less, and a low hardness region, where the Vickers hardness is 150 or more and 300 or less. The rare-earth permanent magnet 16 is used in a state where the rare-earth permanent magnet 16 is inserted into a slot of a yoke in a rotor of an IPM type motor for a car.

摘要翻译： 提供了一种针对汽车的IPM型电动机优化的稀土永磁体，能够提高耐腐蚀性，耐磨性和耐冲击性。 稀土类永磁体16通过在R-Fe系永久磁铁16的表面上形成厚度为15μm以上且30μm以下，形状为柱状晶体结构的电镀Ni被膜21， B系永磁体（R为稀土元素）22.电镀Ni涂膜21具有高维度区域，维氏硬度为300以上且600以下，低硬度区域为维氏硬度 为150以上且300以下。 在稀土永磁体16插入到用于汽车的IPM型电动机的转子中的轭的槽中的状态下使用稀土永磁体16。

公开(公告)号：US20080118747A1

公开(公告)日：2008-05-22

申请号：US11791658

申请日：2005-11-21

申请人： Toshiyasu Komatsu ,  Yasutaka Shintani ,  Kazunari Takahashi ,  Akira Kabasawa ,  Hidenori Okada ,  Yukimitsu Miyao ,  Yuji Kaneko

发明人： Toshiyasu Komatsu ,  Yasutaka Shintani ,  Kazunari Takahashi ,  Akira Kabasawa ,  Hidenori Okada ,  Yukimitsu Miyao ,  Yuji Kaneko

IPC分类号： G11B5/64 ,  C23C28/02 ,  H02K15/03

CPC分类号： C25D5/12 ,  C23C28/021 ,  C23C28/023 ,  C25D7/001 ,  H01F1/0577 ,  H01F41/026 ,  H02K1/276 ,  H02K1/30 ,  H02K15/03 ,  Y10T428/265

摘要： [Problem] To provide a process for producing a permanent magnet for use in an automotive IPM motor, which excels in all of corrosion resistance, abrasion resistance, and impact resistance.[Means for Resolution] The production process characterized in that it comprises forming on the surface of an R—Fe—B based permanent magnet a 3 to 15 μm thick Ni film as a first layer by electroplating method, followed by a 3 to 15 μm thick Cu or Sn film as a second layer by electroplating method, and a 4 to 7 μm thick Ni—P alloy film as a third layer by electroless plating method, provided that the third layer has a Vicker's hardness of 2.5 to 4.5 with respect to the Vicker's hardness of the Cu or Sn electroplated film provided as the second layer taken as 1.

摘要翻译： [问题]提供一种制造用于汽车IPM电动机的永磁体的方法，其具有优异的耐腐蚀性，耐磨性和耐冲击性。 [解决方法]制造方法的特征在于，其包括在作为第一层的3〜15μm厚的Ni膜的R-Fe-B系永久磁铁的表面上通过电镀法形成，然后在3〜15μm 通过电镀法将厚Cu或Sn膜作为第二层，通过化学镀法将第4层厚度为4〜7μm的Ni-P合金膜作为第3层，第3层的维氏硬度相对于 作为第二层提供的Cu或Sn电镀膜的维氏硬度取为1。