公开(公告)号：EP2760033A1

公开(公告)日：2014-07-30

申请号：EP12833413.3

申请日：2012-09-20

申请人： Toda Kogyo Corporation ,  Tohoku University

发明人： YAMAMOTO, Shinpei ,  TAKANO, Mikio ,  TAKAHASHI, Migaku ,  OGAWA, Tomoyuki ,  KOBAYASHI, Naoya

IPC分类号： H01F1/06 ,  B22F1/00 ,  B22F1/02 ,  H01F1/08 ,  H01F41/02

CPC分类号： H01F1/24 ,  B22F1/02 ,  C22C1/02 ,  H01F1/065 ,  H01F1/083

摘要： The present invention provides ferromagnetic iron nitride particles, in particular, in the form of fine particles, and a process for producing the ferromagnetic iron nitride particles. The present invention relates to a process for producing ferromagnetic iron nitride particles, comprising the steps of mixing metallic iron obtained by mixing at least one compound selected from the group consisting of a metal hydride, a metal halide and a metal borohydride with an iron compound, and then subjecting the obtained mixture to heat treatment, with a nitrogen-containing compound; and then subjecting the resulting mixture to heat treatment, in which a reduction step and a nitridation step of the iron compound are conducted in the same step, and the at least one compound selected from the group consisting of a metal hydride, a metal halide and a metal borohydride is used as a reducing agent in the reduction step, whereas the nitrogen-containing compound is used as a nitrogen source in the nitridation step.

摘要翻译： 本发明提供了强磁性氮化铁颗粒，特别是，在细颗粒的形式，和用于制造强磁性氮化铁颗粒的方法。 本发明涉及一种用于制造强磁性铁氮化物粒子，包括混合通过混合选自金属氢化物，金属卤化物，并与在铁化合物的金属硼氢化物中的至少一种化合物获得的金属铁的步骤， 然后对混合物进行热处理而得到，具有含氮化合物; 并且然后将得到的混合物进行热处理，其中还原步骤和铁化合物的氮化步骤在同一步骤中进行的，选自金属氢化物，金属卤化物中选择的至少一种化合物和 金属硼氢化物被用作在还原工序的还原剂，而该含氮化合物用作在氮化步骤氮源。