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US 2026/0074099 A1Published application
Soft-magnetic metal powder, production method for same, and resin composition
AssigneesToda Kogyo Corporation, Tohoku University
InventorsRei TSUSHIRO, Yasushi NISHIO, Yasushi ENDO
Life of this patent
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Abstract
A soft magnetic metal powder contains 5.0% by weight or more and 10.0% by weight or less of B, the balance being one or more metals selected from Fe, Ni, and Co. The soft magnetic metal powder has an average primary particle size of 0.05 μm or more and 1.5 μm or less, a coefficient of variation (standard deviation of primary particle size/average primary particle size) of 0.25 or less, and an aggregation ratio (average aggregate particle size/average primary particle size) of 3 or less.
Claims4
A soft magnetic metal powder, comprising:
- 5.0% by weight or more and 10.0% by weight or less of B,
- the balance being one or more metals selected from Fe, Ni, and Co,
- wherein
- the soft magnetic metal powder has an average primary particle size of 0.05 μm or more and 1.5 μm or less, a coefficient of variation expressed by the following (expression 1) of 0.25 or less, and an aggregation ratio expressed by the following (expression 2) of 3 or less:
- standard
-
- deviation
-
- of
-
- primary
-
- particle
-
- size
-
- /
- average
-
- primary
-
- particle
-
- size
- (
- expression
-
- 1
- )
- average
-
- aggregate
-
- particle
-
- size
- /
- average
-
- primary
-
- particle
-
- size
- (
- expression
-
- 2
- )
46 more elements
Dependencies are inferred from the claim text.