【摘要】 根据制备块状非晶态合金的三条经验准则 ,选择了成分为Fe6 2 Co8-xCrxNb4 Zr6 B2 0 和Fe6 2 Co8-xMoxNb4 Zr6 B2 0 (x =0 ,2 ,4 )的合金系 .利用单辊急冷法制备出厚为 3 0 μm宽为 5mm左右的条带 ,并用差热分析、X射线衍射以及Faraday磁天平、静态磁性测量仪等研究了合金的热稳定性、非晶结构和磁性能 .发现含 2at%Cr的Fe6 2 Co6 Cr2 Nb4 Zr6 B2 0 非晶态合金的过冷液相区ΔTx 最宽 ,达到 85K ,但是合金系的饱和比磁化强度σs 随Cr或Mo含量的增加而急剧下降 .合金系经 973K真空退火 90 0s后 ,由于晶化相α Fe等晶相析出 ,使得各合金的σs 和Hc 都迅速升高 .更多还原

【Abstract】 Fe 62 Co 8-x Cr xNb 4Zr 6B 20 and Fe 62 Co 8-x Mo xNb 4Zr 6B 20 (x=0,2,4, atomic percent) alloy series were chosen to study in this paper based on the three empirical rules of making bulk amorphous alloy. The ribbons, 30μm thick and 5mm wide, were produced by single-roller rapid quenching. The thermal stability, amorphous structure and magnetic properties of these alloys were studied by differential thermal analysis, X-ray diffraction, Faraday magnetic balance and static magnetic measurement. The supercooled liquid region ΔT x of the alloy, which contains 2at% Cr, reaches 85K, but the saturation magnetization σ s of these alloys decreases distinctly with increasing Cr or Mo. The saturation magnetization σ s and coercive force H c increase rapidly for the alloys of this series annealed at 973K for 900s because of the precipitation of α-Fe.更多还原