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采用单辊快淬法制备了Fe_(76-x)Hf_xY_4B_(20)(x=2、4、6 at%)非晶合金,利用X射线衍射仪(XRD)、透射电镜(TEM)、差热分析仪(DTA)和振动样品磁强计(VSM)研究了该系列合金的微观结构、非晶形成能力、热性能和磁性能。结果表明:适量添加Hf元素可提高合金的非晶形成能力。Hf含量的增加提高了合金的第一晶化峰峰值T_p温度。Fe_(76-x)Hf_xY_4B_(20)(x=2、4、6at%)三种非晶合金的饱和磁化强度M_s值分别为123、96、82 emu/g,矫顽力H_c都非常小,样品表现出良好的软磁性能。
The amorphous alloy Fe_ (76-x) Hf_xY_4B_ (20) (x = 2, 4 and 6 at%) was prepared by a single roll rapid quenching method and characterized by X-ray diffraction (XRD), transmission electron microscopy The microstructures, amorphous formability, thermal properties and magnetic properties of the alloys were studied by using an analyzer (DTA) and a vibrating sample magnetometer (VSM). The results show that adding a proper amount of Hf element can improve the amorphous formation ability of the alloy. The increase of Hf content raises the temperature of the first crystallization peak T_p. The saturation magnetization (M_s) values of Fe_ (76-x) Hf_xY_4B_ (20) (x = 2, 4 and 6at%) are 123, 96 and 82 emu / g respectively, and the coercive forces H_c are very small. The samples show good soft magnetic properties.