Abstract
The effect of Cu addition on crystallization behavior and soft magnetic properties of Fe84−x P10C6Cu x (x = 0−1.15) alloys was investigated. Low-cost FePCCu nanocrystalline alloys dispersed with α-Fe phase with an average grain size of 15–35 nm were obtained by appropriately annealing the melt-spun ribbons at 683 K for 5 min. The Fe83.25P10C6Cu0.75 nanocrystalline alloy exhibits a high B s of 1.65 T, low H c of 3.3 A/m and high µe at 1 kHz of 21 100, which is superior to the traditional FePC soft magnetic alloys. The core loss is as low as 0.32 W/kg at 1.0 T and 50 Hz, which is 60% that of nonoriented Fe 6.5 mass% Si-steel. It is encouraging to synthesize this Fe-based nanocrystalline alloy with excellent soft-magnetic properties even using commercially industry-grade raw materials, which is promising for the future industrial applications.
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