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US 2024/0186038 A1Published application
Soft magnetic powder, metal powder, dust core, magnetic element, and electronic device
AssigneeSeiko Epson Corporation
InventorMayu WATANABE
Life of this patent
Estimating the term…
Abstract
A soft magnetic powder contains a composition represented by a composition formula FexCuaNbb(Si1-y(B1-zCrz)y)100-x-a-b in terms of atomic ratio [in which a, b, x, y, and z satisfy 0.3≤a≤2.0, 2.0≤b≤4.0, 75.5≤x≤79.5, 0.55≤y≤0.91, and 0.015≤z≤0.185], and impurities. A crystallite diameter measured by X-ray diffractometry is 6.0 nm or more and 13.0 nm or less.
Claims10
A soft magnetic powder comprising:
- a composition represented by a composition formula FexCuaNbb(Si1-y(B1-zCrz)y)100-x-a-b in terms of atomic ratio,
- a, b, x, y, and z satisfying
- 0.3≤a≤2.0,
- 2.0≤b≤4.0,
- 75.5≤x≤79.5,
- 0.55≤y≤0.91, and
- 0.015≤z≤0.185;
- and
- impurities, wherein
- a crystallite diameter measured by X-ray diffractometry is 6.0 nm or more and 13.0 nm or less.
7 more elements
A metal powder crystallized by being subjected to a heat treatment, comprising:
- a composition represented by a composition formula FexCuaNbb(Si1-y(B1-zCrz)y)100-x-a-b in terms of atomic ratio,
- a, b, x, y, and z satisfying
- 0.3≤a≤2.0,
- 2.0≤b≤4.0,
- 75.5≤x≤79.5,
- 0.55≤y≤0.91, and
- 0.015≤z≤0.185;
- and
- impurities, wherein
- a DSC curve obtained by differential scanning calorimetry has a first exothermic peak and a second exothermic peak located on a higher temperature side than the first exothermic peak, and
- a temperature difference between the first exothermic peak and the second exothermic peak is 125° C. or higher and 180° C. or lower.
8 more elements
Dependencies are inferred from the claim text.