摘要:
There is provided an alloy with ultrafine crystal grains excellent in corrosion resistance, at least 50 % of the alloy structure being occupied by ultrafine crystal grains, the alloy having a surface layer containing hydroxide components in a total proportion of 65 % or more based on oxide components.
摘要:
There is provided a high-performance magnetic core with a high µ'Qf-value for an RF accelerating. The strip wound magnetic core (3a) has a thin strip of nanocrystalline soft magnetic alloy (8), whose bcc solid solution with an average grain size less than 100 nm has a volume fraction more than 50 % of the whole structure of the alloy (8), and around which an interlayer insulation film (7) at least on one side thereof. A gap (10) is formed in at least a part of a magnetic path of the magnetic core (3a). Stack cores formed by arranging in series a plurality of the magnetic cores (3b, 3c) are oppositely installed via a high-voltage gap, making it possible to provide an excellent RF accelerating cavity (2).
摘要:
A nanocrystalline alloy wherein at least 50 volume % of an alloy structure consists of a crystal grain mainly comprising bcc-phase having a grain size of 50 nm or less, a saturation magnetic flux density of the alloy is 1 T or more, a remanent flux density of the alloy is 0.4 T or less, and an Fe-B compound phase is partially formed in the alloy. The nanocrystalline alloy produced by heat treatment without applying any magnetic field shows pulse attenuation characteristics comparable to or more excellent than those of a nanocrystalline alloy obtained by heat treatment in a magnetic field.
摘要:
A miniaturized transformer includes (a) a planar or rod-shaped magnetic core (10) having a height of 3 mm or less and constituted by a laminate of thin ribbons each having a thickness of 30 µm or less, each thin ribbon being made of a nanocrystalline soft magnetic alloy having a structure at least partly occupied by crystal grains having an average crystal grain size of 100 nm or less, or an amorphous soft magnetic alloy, (b) at least one primary winding (16) provided around the core (10), and (c) at least one secondary winding (18) provided around the magnetic core (10).
摘要:
A miniaturized transformer includes (a) a planar or rod-shaped magnetic core (10) having a height of 3 mm or less and constituted by a laminate of thin ribbons each having a thickness of 30 µm or less, each thin ribbon being made of a nanocrystalline soft magnetic alloy having a structure at least partly occupied by crystal grains having an average crystal grain size of 100 nm or less, or an amorphous soft magnetic alloy, (b) at least one primary winding (16) provided around the core (10), and (c) at least one secondary winding (18) provided around the magnetic core (10).
摘要:
A wound iron core formed by winding a thin strip of a soft magnetic alloy into a triodal form, characterized in that a Co-base amorphous magnetic alloy is used as the thin strip and that the thin strip is annealed in a magnetic field in the direction of excitation, so that the core exhibits a rectangle ratio Br/B 10 of 85% or higher in D.C. hysteresis curve. The Co-base amorphous magnetic alloy has a composition substantially expressed by: Co 100-a-b X a Y b where X represents one, two or more elements selected from a group consisting of Ti, V, Cr, Mn, Fe, Ni, Zr, Nb, Mo, Ru, Hf, Ta, W, Y, Ce, Pr, Nd, Sm, Eu, Gd, Tb and Dy, while Y represents one, two or more elements selected from a group consisting of B, C, Al, Si, P and Ge, and wherein the following conditions are met: 0≦ a ≦15 (atom%) and 14≦ b ≦30 (atom%).