采用铜模吸铸法制备了直径d为2～5mm的Co47.6Fe20.4B21.9Si5.1Nb5-xZrx(x=0～5)合金.利用X射线衍射(XRD)、差示扫描量热仪(DSC)、振动样品磁强计(VSM)和显微硬度计分析合金的非晶形成能力(GFA)、磁性能及显微硬度.结果表明:该合金体系具有较好的GFA,随着Zr含量的增加,其GFA呈逐渐降低的趋势.Zr含量为0～2％(原子分数)时,能制得d为3mm的非晶合金;Zr含量为0～3％(原子分数)时,可制得d为2 mm的非晶合金.直径2mm的棒状非晶合金(Zr含量为0～3％(原子分数))表现为明显的软磁性,饱和磁化强度Ms趋于一定值.该体系非晶合金均具有很高的显微硬度,Zr含量为3％(原子分数)时达到1420HV.
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