Soft magnetic Fe basic metal glass

摘要

PPROBLEM TO BE SOLVED: To resolve such a problem that the conventional Fe-based soft magnetism glassy alloy has small saturation magnetization and does not satisfy the requirement of a transformer and a motor, and the one using Ga is expensive, and therefore in order to achieve further practical use of the glassy alloy, improvement in glass formability and a soft magnetic characteristics such as initial permeability, coercive force and saturation magnetization, and reduction in cost of raw material and of a manufacturing process are required. PSOLUTION: This soft magnetism Fe-based glassy alloy is characterized in that the composition is shown with a formula: FeSB79-x/SBMoSBx/SBPSB10/SBCSB4/SBBSB4/SBSiSB3/SB(x=2-5 at%), the temperature interval ΔTx of supercooled liquid is ≥40K, the diameter or the thickness is 1.5-4 mm, the volumetric ratio of glassy phase is 100%, the coercive force (Hc) is 1.5-2.1 A/m, the saturation magnetization (Is) is 1.14 T-1.39 T, and the initial permeability at 1 KHz and 1A/m is 18,600-20,920. A bar-material or a platy material manufactured by a copper mold casting method can be used as a magnetic core material. PCOPYRIGHT: (C)2008,JPO&INPIT