NdFeB/Fe_3P合金中降低软磁相的熔点对磁性的影响
|
摘要
采用直接合成法制备了NdFeB/Fe3P复合永磁材料,根据Fe-P二元相图,通过调节Fe-P配比,借助共晶反应可以间接降低软磁相Fe3P的熔点(1 166℃→1 050℃),在软-硬磁相晶界处形成晶间薄层相,有效地减缓了NdFeB/Fe3P复合永磁体的矫顽力随软磁相增多而下降的速率.
In this paper,NdFeB/Fe3 P composite permanent magnetic materials are prepared by the direct synthesis method of new preparation process.Then through Fe-P binary phase diagram,tuning Fe-P ratio and using the edutectic reaction makes the melting point of Fe3 P decrease indirectly and the decreasing velocity of coercive force of NdFeB/Fe3 P composite permanent magnetic materials slowly.It is considered that its physical mechanism is that decreasing the melting point of Fe3 P makes soft magnetic phase Fe3 P form crystal thin layer in the crystal boundary.
In this paper,NdFeB/Fe3 P composite permanent magnetic materials are prepared by the direct synthesis method of new preparation process.Then through Fe-P binary phase diagram,tuning Fe-P ratio and using the edutectic reaction makes the melting point of Fe3 P decrease indirectly and the decreasing velocity of coercive force of NdFeB/Fe3 P composite permanent magnetic materials slowly.It is considered that its physical mechanism is that decreasing the melting point of Fe3 P makes soft magnetic phase Fe3 P form crystal thin layer in the crystal boundary.
引文
[1]Kneller E F,Hawing R.The Exchang-Spring Magnet:A new Mererial Principle for Permanent Magnets[J].IEEE Trans,1991,27:3588.
[2]Skomski R.Aligned Two-phase Magnets:Permanent Magnetism of Future[J].J Appl phys,1994,76(10):7059-7064.
[3]崔子振,刘卫强,岳明,等.SmCo5/α-Fe双相复合纳米晶磁体的结构与磁性研究[J].纳米科技,2010,7(2):30-32.
[4]张小磊,刘国征,赵瑞金,等.烧结钕铁硼双相合金工艺的研究进展[J].稀土,2009,30(2):81-85.
[5]李承枢.Nd2Fe14B-Fe3P双相合金的磁性研究[D].呼和浩特:内蒙古师范大学物理与电子信息学院,2014.
[6]李承枢,桂文龙,萨出仁桂,等.机械合金化增强Nd2Fe14B磁粉矫顽力的研究[J].内蒙古师范大学学报:自然科学汉文版,2014,43(3):295-297.
[7]李建映,欧阳义芳,曹奇志,等.Fe-P二元系机械合金化研究[J].广西科学,2007,14(1):52-55.
[8]崔忠圻,覃耀春.金属学与热处理[M].北京:机械工业出版社,2007:61,84-93.
[9]Gamblno R J,Mcguite T R,Nakamura Y.Magnetic Propeties of the Iron-Group Metal Phosphides[J].Journal of Applied Physics,1967,38:3.
[10]Lisher E J,Wilkinson C,Ericsson T,et al.Studies of the magnetic structure of Fe3P[J].J Phys,1974(7):1344-1352.
[11]周军,宋伟,裴晓东.双合金法制备烧结钕铁硼磁体的研究[J].金属学报,2011,18(5):5-7.
[12]陈伟,高伟,朱明刚.Nd-Fe(Co,Ga,Nb)-B纳米复合材料的矫顽力的晶粒尺寸关系[J].材料研究学报,2003,17(2):151-155.
[2]Skomski R.Aligned Two-phase Magnets:Permanent Magnetism of Future[J].J Appl phys,1994,76(10):7059-7064.
[3]崔子振,刘卫强,岳明,等.SmCo5/α-Fe双相复合纳米晶磁体的结构与磁性研究[J].纳米科技,2010,7(2):30-32.
[4]张小磊,刘国征,赵瑞金,等.烧结钕铁硼双相合金工艺的研究进展[J].稀土,2009,30(2):81-85.
[5]李承枢.Nd2Fe14B-Fe3P双相合金的磁性研究[D].呼和浩特:内蒙古师范大学物理与电子信息学院,2014.
[6]李承枢,桂文龙,萨出仁桂,等.机械合金化增强Nd2Fe14B磁粉矫顽力的研究[J].内蒙古师范大学学报:自然科学汉文版,2014,43(3):295-297.
[7]李建映,欧阳义芳,曹奇志,等.Fe-P二元系机械合金化研究[J].广西科学,2007,14(1):52-55.
[8]崔忠圻,覃耀春.金属学与热处理[M].北京:机械工业出版社,2007:61,84-93.
[9]Gamblno R J,Mcguite T R,Nakamura Y.Magnetic Propeties of the Iron-Group Metal Phosphides[J].Journal of Applied Physics,1967,38:3.
[10]Lisher E J,Wilkinson C,Ericsson T,et al.Studies of the magnetic structure of Fe3P[J].J Phys,1974(7):1344-1352.
[11]周军,宋伟,裴晓东.双合金法制备烧结钕铁硼磁体的研究[J].金属学报,2011,18(5):5-7.
[12]陈伟,高伟,朱明刚.Nd-Fe(Co,Ga,Nb)-B纳米复合材料的矫顽力的晶粒尺寸关系[J].材料研究学报,2003,17(2):151-155.