Soft magnetic iron-based powder and preparation method therefor, and soft magnetic component
AssigneePosco
InventorsHyungjin KIM, Seil LEE, Jeasook CHUNG
Life of this patent
Estimating the term…
Abstract
Disclosed are a soft magnetic iron-based powder, a preparation method therefor, and a soft magnetic component, which are applicable to various industrial fields such as a core of a motor. According to an embodiment of the disclosed soft magnetic iron-based powder, the powder comprises, in wt %, more than 2% of Si, more than 0.02% of Al, more than 0.05% of Mn, more than 0% and less than 0.1% of O, and the balance being Fe and unavoidable impurities, and satisfies [Si]/[Al]>2, wherein the difference in [Si]+[Al]+[Mn] between D10 and D90 may be less than 10 wt %. [Si], [Al], and [Mn] represent wt % of respective elements.
Claims9
A soft magnetic component comprising:
- a soft magnetic iron-based powder comprising, in percent by weight (wt %), more than 2% of Si, more than 0.02% of Al, more than 0.05% of Mn, more than 0% and less than 0.1% of O, and the balance being Fe and unavoidable impurities and satisfying [Si]/[Al]>2;
- and
- an insulating layer including Si, Al, Mn, O and formed in an interface between particles of the soft magnetic iron-based powder,
- wherein an iron loss at 1 T at 1000 Hz is at most 140 W/kg.
Dependencies are inferred from the claim text.