Fe基金属ガラス粉末の固化成形とその磁気特性

概要

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The effects of annealing temperature on the magnetic properties of consolidated Fe-Al-Ga-P-C-B-Si glassy alloy prepared by the pulse-current-sintering method were investigated. A high relative density of 99% combined with good soft magnetic properties was obtained for a sintering temperature of 703 K in the as-sintered state. Thc flux density under an applied field of 800 A/m (B_<800>), relative permeability at f=1kHz (μ´_<1KHz>), and core loss at f=50 Hz and B_m=0.5 T (W_<5/50>) for the sample sintered at 703 K in the as-sintered state were 1.08T, 1, 700, and 0.2 W/kg, respectively. B_<800> μ´_<1KHz> and W_<5/50> were improved to 1.17 T, 2, 500, and 0.11 W/kg by annealing at 723 K for 3.6 ks. It is considered that these improvements were due to stress relaxation of the consolidating process originating in structural relaxation of the amorphous structure.
社団法人日本磁気学会の論文
2001-02-01