论文部分内容阅读
低Nd快淬Nd-Fe-B合金,由于具有高的剩磁和磁能积可望成为实用性永磁材料。我们已在Nd-Fe-B三元相图的富Fe区,系统地研究了快淬Nd-Fe-B合金的相组成和磁性,重点研究了低Nd(3—5at％)快淬Nd-Fe-B合金的永磁性。在Nd_4Fe_(77.5)B_(18.5)合金中,获得室温最大矫顽力H_c=231kA/m和磁能积(BH)_(max)=104kJ/m~3,并研究了Co,Al,Ga等元素的替代对快淬Nd_4Fe_(77.5)B_(18.5)合金磁性的影响。本文报道非晶态R_4Fe_(77.5)B_(18.5)(R=Y,Ce,Pr,Nd,Gd,Dy)合金的磁性和晶化以及晶化对磁性的影响。
Low Nd quenching Nd-Fe-B alloy, due to the high remanence and magnetic energy product is expected to become a practical permanent magnet materials. We have systematically investigated the phase composition and magnetic properties of the rapidly quenched Nd-Fe-B alloy in the Fe-rich region of the Nd-Fe-B ternary phase diagram. The effects of low Nd (3-5at%) quenching Nd- Fe-B alloy permanent magnetism. In Nd_4Fe_ (77.5) B_ (18.5) alloy, the maximum coercive force Hc = 231kA / m and the energy product BHmax_max 104kJ / m ~ 3 were obtained at room temperature. On the magnetic properties of quenched Nd_4Fe_ (77.5) B_ (18.5) alloys. In this paper, the effects of magnetic and crystallization, and crystallization on the magnetic properties of amorphous R_4Fe_ (77.5) B_ (18.5) (R = Y, Ce, Pr, Nd, Gd, Dy) alloys are reported.