| 摘要 |
PURPOSE:To obtain an iron-base soft-magnetic alloy having low iron loss, high saturation magnetic flux density, and low magnetostriction in high frequency region by subjecting a rapidly solidified body of a molten metal containing iron-base alloy, etc., to heat treatment and precipitating fine crystalline grains in the structure. CONSTITUTION:A molten metal containing molten iron-base alloy and ceramic material is formed into a rapidly solidified body by a rapid solidification process, such as chill block melt spinning, and this rapidly solidified body is heat-treated at a temp. in the vicinity of or not lower than its crystallization temp., by which fine crystalline grains are precipitated in the structure. Further, the above molten metal has a composition represented by formula, where X means one or more compounds selected from ceramic materials capable of being melted at the time of preparing a rapidly solidified body, M means one or more elements among Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W, M' means one or more kinds among Mn, platinum group elements, Ag, Au, Zn, Al, Ga, In, Sn, and rare earth elements, A means Co and/or Ni, and Z means one or more kinds among B, C, P, and Ge. Moreover, the symbols (a), (b), (c), (d), (e), (f), and (g) stand for, by atom, 0.1-5%, 0.1-5%, 0.1-10%, 0-10%, 0-40%, 5-25%, and 2-20%, respectively, and the sum of (f) and (g) is 12-31%. |
