Structures and magnetic properties of Nd–Fe alloys produced by the glass slag method

Nd–Fe alloys were produced by the glass slag method using boron trioxide to investigate the reaction between Nd and Fe alloys and boron trioxide. Boronizing of the Nd–Fe alloys took place when the solid Nd–Fe alloys and the molten boron trioxide were reacted. Formation of the Nd2Fe14B phase in the resultant specimens was clearly identified by X-ray diffraction and magnetic measurements. On the other hand, the extraction of Nd from the Nd–Fe alloys took place when the Nd–Fe melts and molten boron trioxide reacted. The resultant specimens contained no neodymium-related phase but consisted of the Fe2B and α-Fe phases. The extraction of Nd from the Nd–Fe alloys resulted in the formation of the NdBO3 phase in the glass slag materials.