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近期,我们成功地开发了新纳米晶Fe_(72)Cu_1Nb_2Si_(14)B_9和Fe_(72)Cu_1Nb_1Mo_1V_2Si_(14)B_9合金,和早期问世的典型的纳米晶 Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9和Fe_(73.1)Cu_(1.2)Nb_(3.2)Si_(12.5)B_(10)合金相比,降低了成本,明显改善了原始非晶带脆性,仍显示出优良的综合磁性能,并得到若干重要实际应用.本文报道新合金的磁性能、铁损分析结果和几个应用例子.1 实验用单辊液态快淬法制成32～35μm厚、1.0cm宽的非晶带,卷成内外径分别为2.0cm和2.5cm的环形样品.样品在氮气中在不同温度下无磁场退火0.5h后炉冷,根据直流相对起始磁导率μi和f=20kHz及Bm=0.5T条件下铁损值确定最佳退火温度范围.用退火样品测量磁性能.直流磁性、交流相对有效磁导率μe及铁损P的测量方法、条件及采用的符号已在文献[2,3]中说明.纵向和横向磁场退火是在最佳无磁场退火后,再在793K下磁场退火2h.
Recently, we successfully developed new nanocrystalline Fe 72 Cu 1 Nb 2 Si 14 B 9 and Fe 72 Cu 1 Nb 1 Mo 2 V 2 Si 14 B 9 alloys, and the typical nanocrystalline Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 and Fe 3 (73.1) Cu 1.2 Nb 3.2 Si 12.5 B 10 alloy, the cost is reduced, the original amorphous zone brittleness is obviously improved, the excellent comprehensive magnetic properties are still shown, and a number of important practical This paper reports the magnetic properties of the new alloy, the iron loss analysis results and several application examples.1 Experimental Single-roll liquid quenching method to produce 32 ~ 35μm thick, 1.0cm wide amorphous zone, rolled into an outer diameter of 2.0 cm and 2.5cm.The samples were annealed in a nitrogen atmosphere at different temperatures for 0.5h and then cooled in the furnace.According to DC relative initial permeability μi and iron loss at f = 20kHz and Bm = 0.5T Good annealing temperature range - Measurement of magnetic properties with annealed samples - Measurement methods, conditions and symbols used for dc magnetic, AC relative permeability μe and core loss P are described in references [2,3]. Longitudinal and transverse magnetic fields Annealing is the best non-magnetic field annealing, and then annealed at 793K magnetic field 2h.