Nano-crystalline, magnetic alloy, its production method, alloy ribbon and magnetic part
AssigneeHitachi Metals, Ltd.
InventorsMotoki OHTA, Yoshihito YOSHIZAWA
Life of this patent
Estimating the term…
Abstract
A magnetic alloy having a composition represented by the general formula of Fe100-x-yCuxBy (atomic %), wherein x and y are numbers meeting the conditions of 0.1≦x≦3, and 10≦y≦20, or the general formula of Fe100-x-y-zCuxByXz (atomic %), wherein X is at least one element selected from the group consisting of Si, S, C, P, Al, Ge, Ga and Be, and x, y and z are numbers meeting the conditions of 0.1≦x≦3, 10≦y≦20, 0<z≦10, and 10<y+z≦24), the magnetic alloy having a structure containing crystal grains having an average diameter of 60 nm or less in an amorphous matrix, and a saturation magnetic flux density of 1.7 T or more.
Claims39
1-16. (canceled)
A magnetic alloy having a composition represented by the following general formula (1):
- Fe100-x-yCuxBy(atomic %) (1),
- wherein x and y are numbers meeting the conditions of 1.0≦x≦1.7, and 10≦y≦20, said magnetic alloy having a structure containing crystal grains having an average diameter of 60 nm or less which is dispersed in a proportion of 30% or more by volume in an amorphous matrix, and a saturation magnetic flux density of 1.7 T or more.
A magnetic alloy having a composition represented by the following general formula (2):
- Fe100-x-y-zCuxByXz(atomic %) (2),
- wherein X is at least one element selected from the group consisting of Si, S, C, P, Al, Ge, Ga and Be, and x, y and z are numbers meeting the conditions of 1.0≦x≦1.7, 10≦y≦20, 0<z≦10, and 10<y+z≦24, said magnetic alloy having a structure containing crystal grains having an average diameter of 60 nm or less which is dispersed in a proportion of 30% or more by volume in an amorphous matrix, and a saturation magnetic flux density of 1.7 T or more.
An alloy ribbon having a composition represented by the following general formula (1).
- Fe100-x-yCuxBy(atomic %) (1),
- wherein x and y are numbers meeting the conditions of 1.0≦x≦1.7, and 10≦y≦20, said alloy ribbon having a structure containing fine crystal grains having an average diameter of 30 nm or less which is dispersed in a proportion of more than 0% by volume and 30% by volume or less in an amorphous matrix.
An alloy ribbon having a composition represented by the following general formula (2):
- Fe100-x-y-zCuxByXz(atomic %) (2),
- wherein X is at least one element selected from the group consisting of Si, S, C, P, Al, Ge, Ga and Be, and x, y and z are numbers meeting the conditions of 1.0≦x≦1.7, 10≦y≦20, 0<z≦10, and 10<y+z≦24, said alloy ribbon having a structure containing fine crystal grains having an average diameter of 30 nm or less which is dispersed in a proportion of more than 0% by volume and 30% by volume or less in an amorphous matrix.
Dependencies are inferred from the claim text.