一种Fe‑B‑P‑C‑Cu‑N‑Cr系非晶纳米晶软磁合金及制备方法。化学成分表达式为Fe_xB_yP_zC_aCu_bN_cCr_d，式中x，y，x，a，b，c，d分别表示各对应组分Fe、B、P、C、Cu、N、Cr的原子百分比，其中80≤x≤85，4≤y≤9，3≤z≤8，3≤a≤5，0.7≤b≤1.1，0.1≤c≤0.5，d的范围根据氮化铬铁(FeCrN)添加剂的成分确定，FeCrN添加剂的原子百分比含量为Fe_27.9Cr_46.8N_25.3。在本发明合金体系中，添加了低熔点的FeCrN，当N＝0.4时，合金在最佳温度退火6min之后，饱和磁化强度(B_s)可达1.86T，矫顽力(H_c)可低至9.2A/m，其非晶态在0.5mol/LNaCl溶液中的腐蚀电位相对于对比例(Fe₈₃B₉P₃C₄Cu₁)合金的提高了0.1V。所制备的非晶纳米晶合金可作为电机、互感器等器件适用于电力工业变压器铁芯、逆变焊机、新能源、无线充电、数码及自动化等领域。

A Fe-B-P-C-Cu-N-Cr series amorphous and nanocrystalline soft magnetic alloy and a preparation method thereof. The chemical composition expression is Fe_xB_yP_zC_aCu_bN_cCr_d, where x, y, x, a, b, c, d represent the atomic percentage of each corresponding component Fe, B, P, C, Cu, N, and Cr respectively, where 80≤x≤ 85, 4≤y≤9, 3≤z≤8, 3≤a≤5, 0.7≤b≤1.1, 0.1≤c≤0.5, the range of d is determined by the composition of FeCrN additive. The atomic percentage content of FeCrN additive is Fe_27.9Cr_46.8N_25.3. In the alloy system of the present invention, FeCrN with low melting point is added. When N=0.4, the saturation magnetization (B_s) can reach 1.86T and the coercive force (H_c) can be as low as 9.2 A/m, after annealing at the optimal temperature for 6 minutes. The corrosion potential of the amorphous state in 0.5mol/L NaCl solution is increased by 0.1V compared to the comparative example (Fe₈₃B₉P₃C₄Cu₁) alloy. The prepared amorphous nanocrystalline alloy can be used as motors, transformers and other devices, suitable for transformer cores in the power industry, inverter welding machines, new energy, wireless charging, digital and automation and other fields.