采用单辊急冷法制备了(Fe0.58Co0.42)73Cr17Zr10非晶薄带,并对该合金进行等温退火.用XRD、AFM、VSM研究退火温度对(Fe0.58Co0.42)73Cr17Zr10非晶合金的组织结构和磁性能的影响.结果表明:该合金晶化析出过程为:Am→α-Fe(Co)+Am'→α-Fe(Co)+CrFe4+Fe3Ni2+Cr2Zr+未知相.500℃和610℃退火后薄带表面的AFM观察表明:AFM图片所呈现的颗粒尺寸要比用Scherrer法测得的α-Fe (Co)纳米晶尺寸大得多,这是典型的包裹晶粒现象.在低于晶化峰值温度(Tp)退火,由于铁磁性α-Fe(Co)相的析出,合金的饱和磁化强度Ms随退火温度的升高大幅上升;当退火温度高于Tp时,由于α-Fe (Co)相的粗化和析出相的析出和长大,Ms急剧下降,在635℃退火能获得最好磁性能,其Ms=126.2 emu/g.
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