论文部分内容阅读
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 .
According to the three empirical criteria for the preparation of bulk amorphous alloys, the alloy system with the composition of Fe6 2 Co8-xCrxNb4 Zr6 B2 0 and Fe6 2 Co8-xMoxNb4 Zr6 B2 0 (x = 0, 2, 4) A strip with a thickness of 30 μm and a width of 5 mm was prepared by rapid cooling method. The thermal stability, amorphous structure and magnetic properties of the alloy were studied by differential thermal analysis, X-ray diffraction, Faraday magnetic balance and static magnetic measuring instrument. It is found that the ΔTx of the supercooled liquid region of Fe6 2 Co6 Cr2 Nb4 Zr6 B2 0 amorphous alloy containing 2 at% Cr is the widest at 85 K, but the saturation magnetization σs of the alloy system decreases sharply with increasing Cr or Mo content After the alloy was vacuum annealed at 973K for 90 s, the σs and Hc of the alloys rapidly increased due to the precipitation of α Fe and other crystalline phases.