[Fe_(0.71)(Dy_xNd_(1-x))_(0.05)B_(0.24)]_(96)Nb_4(x=0-1)块体合金的非晶形成能力和磁性能

Glass-forming ability and magnetic property of [Fe_(0.71)(Dy_xNd_(1-x))_(0.05)B_(0.24)]_(96)Nb_4(x=0-1) bulk alloys

采用铜模吸铸法制备[Fe0.71(DyxNd1-x)0.05B0.24]96Nb4(x=0-1,摩尔分数)块体合金,利用X射线衍射(XRD)、差示扫描量热仪(DSC)和振动样品磁强计(VSM)研究合金的非晶形成能力(GFA)和磁性能。结果表明:该体系合金均具有较好的非晶形成能力,可制备出直径为2 mm的完全非晶合金,随着Dy含量(x)的增加,合金的非晶形成能力逐渐增强。当x=1时,可制得直径为3 mm的完全非晶合金;饱和磁化强度(Ms)由x=0时的Ms=97.59 A·m2/kg逐渐降低到x=1时的Ms=75.85 A·m2/kg。该体系直径为2 mm的块体非晶合金均表现为明显的软磁性特征。

[Fe0.71（DyxNd1-x）0.05B0.24]96Nb4（x=0-1, mole fraction） bulk alloys were prepared by copper mold suction casting method. The glass-forming ability （GFA） and magnetic property were investigated by X-ray diffractometry （XRD）, differential scanning calorimetry （DSC） and vibrating sample magnetometry （VSM）. The results indicate that the alloys exhibit good glass-forming ability, and amorphous alloys with diameter of about 2 mm can be obtained. The GFA is improved gradually with the increase of Dy content （x）, which is confirmed by the amorphous alloy with diameter of 3 mm when x=l. The amorphous alloys of 2 mm in diameter show the obvious soft magnetic behavior. The saturation magnetization （Ms） decreases gradually from 97.59 A·m^2/kg when x=0 to 75.85 A·m^2/kg when x=1.