公开(公告)号：US4093477A

公开(公告)日：1978-06-06

申请号：US737268

申请日：1976-11-01

申请人： Masao Iwata ,  Hisao Yoshizawa

发明人： Masao Iwata ,  Hisao Yoshizawa

IPC分类号： C22C30/00 ,  C21D1/04 ,  C21D6/00 ,  C22C38/00 ,  C22C38/30 ,  H01F1/04

CPC分类号： H01F1/04 ,  C21D1/04 ,  C22C38/30

摘要： The thermo-magnetic-treated anisotropic permanent magnet alloy of the present invention consists essentially of, by weight, 17 to 45% chromium, 3 to 14.5% cobalt, 0.2 to 5% silicon and balance substantially iron, preferably 23 to 35% chromium, 7 to 14.5% of cobalt, 0.3 to 3% silicon and balance substantially iron and has a residual magnetic flux density of 7000 Gauss or more and a coersive force of 300 Oersted or more. In order to obtain the alloy, an alloy having the above identified composition is initially aged at a temperature of 570.degree. C to 670.degree. C for a period of 10 minutes to 5 hours in a magnetic field and secondarily aged at a temperature within 200.degree. C below the thermo-magnetic treatment temperature for a period of 30 minutes to 50 hours.

摘要翻译： 本发明的热磁处理各向异性永磁体合金基本上由重量计为17至45％的铬，3至14.5％的钴，0.2至5％的硅和余量基本上为铁，优选为23至35％的铬， 7〜14.5％的钴，0.3〜3％的硅和余量基本上为铁，并且具有7000高斯或更高的剩余磁通密度和300奥斯特或更高的强度。 为了获得合金，将具有上述组成的合金初始在570〜670℃的温度下在磁场中老化10分钟〜5小时，然后在200℃以下二次老化 低于热磁处理温度30分钟至50小时。