Magnetic powder and method of preparing magnetic powder
AssigneeLG Chem, Ltd.
InventorsJinhyeok Choe, Ikjin Choi, Hyounsoo Uh, Soon Jae Kwon
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Abstract
A magnetic powder and a method for fabricating the same according to an embodiment of the present disclosure are provided. The magnetic powder is powder particles synthesized using a mixture of a rare earth oxide, a raw material, a metal, a metal oxide and a reducing agent, wherein the powder particles are single-phase, the raw material includes at least one of Fe and Co, the metal includes at least one of Ti, Zr, Mn, Mo, V and Si, and the metal oxide includes at least one of MnO2, MoO3, V2O5, SiO2, ZrO2 and TiO2.
Claims14
A magnetic powder synthesized from reduction and diffusion of a mixture of a rare earth oxide, a raw material, a metal, a metal oxide and a reducing agent,
- wherein the magnetic powder is single-phase with a reduced secondary phase present at a volume fraction greater than 0% and up to 2%,
- wherein the secondary phase is Alpha Fe, FeTi, or Fe2Ti,
- the mixture includes at least one of Cu, Al, or Ga,
- the raw material comprises Fe and Co,
- the metal comprises at least one of Ti, Zr, Mn, Mo, V or Si, and
- the metal oxide comprises at least one of MnO2, MoO3, V2O5, SiO2, ZrO2 or TiO2, wherein the magnetic powder consists of a composition of R1-xZrx(Fe1-yCoy)12-zTzM, wherein R is Nd or Sm, M is Cu, Al or Ga, and T is Mn, Mo, V, Si or Ti, wherein R1-xZrx(Fe1-yCoy)12-zTzM has 0≤x≤0.2, 0≤y≤0.2, 0≤z≤1, wherein an average particle size of the particles constituting the magnetic powder is 10 micrometers or less.
Dependencies are inferred from the claim text.