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1. 发明公开

KR1019950004295A R-Fe-B계 영구 자석 재료의 제조방법 失效
标题翻译：生产R-Fe-B基永磁材料的方法
公开(公告)号：KR1019950004295A
公开(公告)日：1995-02-17
申请号：KR1019930021615
申请日：1993-10-15
申请人： 가부시키가이샤 네오맥스
发明人： 가네코유지 , 이시가키나오유키 , 도쿠하라고키
IPC分类号： H01F1/04
CPC分类号： H01F1/0573 , B22F3/02 , B22F3/04 , B22F2202/05 , B22F2998/10 , B22F2999/00 , H01F1/057 , H01F1/0577 , B22F9/023 , B22F3/10
摘要： 본발명은양호한산화저항성과자기특성을가진 R-Fe-B계영구자석재료및 효율적으로분쇄될수 있는상기영구자석재료의제조방법을제공하는것을그 목적으로한다. 본발명에따라, 특정조성의 R-Fe-B계용융합금은특정한판 두께와 R-부화상이 5㎛미만으로미세하게분리되어있는구조를가진주조부재로스트립주조공정에의해주조된다. 주조부재는자연붕괴동안수소화작용을받으며, 그후합금분말은탈수소되고분쇄중에안정화되어합금주괴를구성하는주요상의결정입자로분화된다. 이에의해균일한입자분포를가진분말이종래방법에서보다약 2배의효율로생성될수 있다. 또한, R-부화상및 RFeB상도분쇄시에분화된다. 따라서, 펄스자기장을사용하는배향이후의프레스가공에이한자화에의하여, 자석합금의양호한산화저항성및 자기특성, 특히 59이상의최대에너지산출치(BH)max 값 : A(MGOe)과 iHc값 : B(kOe)과의합산치(A+B) 및 1.01 내지 1.045의자기소거곡선의정방형도 {(Br/4)/(BH)max}를가지는영구자석재료를얻게된다.
摘要翻译：本发明的目的在于提供具有良好的抗氧化性和磁特性的R-Fe-B系永久磁铁材料及能够有效粉碎的永磁铁材料的制造方法。根据本发明，R-Fe-B基的基于熔融特定组成的合金铸有具有其中一定厚度和回合R-副图像通过带坯连铸法细碎至小于5㎛的结构的铸造部件。在自然衰变期间，铸造构件经历氢化，然后合金粉末在研磨期间脱氢并稳定化以分化成构成合金铸锭的主相的晶粒。由此可以以均匀方法的情况下约两倍的效率生产具有均匀颗粒分布的粉末。此外，在粉碎时，R-sub图像和RFeB相位不同。因此，压使用脉冲磁场，这在良好的抗氧化性和由中国字符屏幕的磁体合金的磁特性，特别是59或更多个最大能量产值（BH）max的值的取向之后工作：A（MGOe）磁体和iHc的值：B （K + e）的总和（A + B）之和为1.01至1.045的（Br + 4）/（BH）max}

2. 发明授权

KR100131060B1 R-Fe-B계 영구 자석 재료의 제조방법 失效
标题翻译： R-FE-B永磁材料与加工方法
公开(公告)号：KR100131060B1
公开(公告)日：1998-04-24
申请号：KR1019930021615
申请日：1993-10-15
申请人： 가부시키가이샤 네오맥스
发明人： 가네코유지 , 이시가키나오유키 , 도쿠하라고키
IPC分类号： H01F1/04
CPC分类号： H01F1/0573 , B22F3/02 , B22F3/04 , B22F2202/05 , B22F2998/10 , B22F2999/00 , H01F1/057 , H01F1/0577 , B22F9/023 , B22F3/10
摘要： It is an object of the present invention to provide R-Fe-B permanent magnet materials having a good oxidation resistance and magnetic characteristics, and a process of producing the same capable of pulverizing efficiently, whereby an R-Fe-B molten alloy having a specific composition is casted into a cast piece having a specific plate thickness and a structure, in which an R-rich phase is finely separated below 5 mu m, by a strip casting process, the cast piece is subjected to a Hydrogenation for spontaneous decay, and thereafter, an alloy powder is dehydrogenated and stabilized for pulverization so as to fractionize crystal grains of a main phase constituting an alloy ingot, thereby the powder having a uniform grain distribution can be produced at an efficiency of about twice as much as the conventional process, and the R-rich phase and an R2Fe14B phase are also fractionized at the time of pulverization, thus by magnetization by pressing after the orientation using a pulse magnetic field, a high performance R-Fe-B permanent magnet having, a good oxidation resistance and magnetic characteristics of the magnetic alloy, particularly, a total value A + B of a maximum energy product value (BH) max (MGOe); A and a characteristic value; B of a coercive force iHc(kOe) of 59 or more and the squareness of demagnetization curve {(Br /4)/(BH) max} of 1.01 to 1.045 is obtained.

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