【摘要】 类金属元素是改善Fe基非晶纳米晶合金非晶形成能力和软磁性能的重要添加剂。用单辊甩带法制备了Fe_73.5Si_13.5Nb₃Cu₁B_9-xP_x（x=0, 3%, 6%, 9%）（原子分数）合金带材，从各元素间磁相互作用出发探索了P替换B对合金组织结构和软磁性能的影响。实验结果表明，P添加可有效提高合金的初晶相晶化温度以及合金的非晶形成能力；但是二次晶化相的析出温度降低，弱化了其热稳定性。当P含量为3%（原子分数）时，合金有较宽的退火温度窗口，且可有效细化初晶相晶粒尺寸，并在525℃退火后表现出最佳软磁性能，此时合金晶粒尺寸为9 nm,矫顽力为0.21 A/m,同时有效磁导率高于x=0合金。但是由于P的添加，残余非晶相中Fe的磁矩降低，导致合金的饱和磁感应强度降低。更多还原

【Abstract】 By alloying metalloid element, the amorphous forming ability and soft magnetic properties could be improved for the Fe based amorphous and nanocrystalline alloys. In this paper, Fe_73.5Si_13.5Nb₃Cu₁B_9-xP_x（x=0, 3 at%, 6 at%, 9 at%） ribbons were fabricated using the melt spinning technique, and the effect of substitution of B by P on the microstructure and soft magnetic properties have been studied based on the magnetic interaction between elements. It is found that, P addition improves the onset temperature of the primary crystallization and thus the glass forming ability, but reduces the onset temperature of the secondary crystallization and thus its thermal stability. The 3 at% P addition is beneficial for the precipitation of α-Fe and the grain size refinement. After annealed at 525 ℃, the optimal soft magnetic properties are obtained in x=3 at% alloy, meanwhile, the grain size is 9 nm, the coercivity is 0.21 A/m and the effective permeability is higher than that of x=0 alloy. However, P addition decreases the magnetic moment of Fe in the residual amorphous phase and thus the saturation magnetization.更多还原