Lg Chem, Ltd

Jakyu Chun

Soon Jae Kwon

Seung Ho Moon

Tae Hoon Kim

Hyounsoo Uh

Ingyu Kim

Ikjin Choi

Jinhyeok Choe

Eunjeong Shin

Kwang Won Jeon

A method for producing a magnet powder is provided in the present disclosure. The method includes synthesizing a R—Fe—B-based magnet powder by a reduction-diffusion process, coating an antioxidant film onto a surface of the R—Fe—B-based magnet powder, and immersing and cleaning the R—F—B-based magnet powder in an aqueous solvent or a non-aqueous solvent, wherein R is Nd, Pr, Dy or Tb, and wherein the antioxidant film includes a compound containing at least one amino group.

Method for producing magnet powder and sintered magnet produced by the same

A method for manufacturing a sintered magnet according to one embodiment of the present disclosure is provided. The method includes producing an R-T-B-based magnetic powder through a reduction-diffusion method, and sintering the R-T-B-based magnetic powder, wherein R is a rare earth element, and T is a transition metal, and wherein the producing the magnetic powder includes adding a refractory metal sulfide powder to a R-T-B-based raw material.

Manufacturing method of sintered magnet

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Daejeon, South Korea

Jakyu Chun