Lg Chem, Ltd

Juneho In

Soon Jae Kwon

Hyounsoo Uh

Ikjin Choi

Ingyu Kim

Jinhyeok Choe

Eunjeong Shin

Pumsuk Park

Sangwoo Kim

Jung Goo Lee

Byungkyu Lim

A sintered magnet and method of manufacturing the same are disclosed herein. According to an exemplary embodiment, a manufacturing method of a sintered magnet includes mixing the neodymium iron boron (NdFeB)-based powders and rare-earth hydride powders to prepare a mixture, heat-treating the mixture at a temperature of 600 to 850&#xb0; C., and sintering the heat-treated mixture at a temperature of 1000 to 1100&#xb0; C. to prepare the sintered magnet, wherein the rare earth hydride powders are neodymium hydride (NdH) powders or mixed powers of NdHand praseodymium hydride (PrH). In an embodiment, the NdFeB-based powders are prepared by a reduction-diffusion method.

Manufacturing method of sintered magnet, and sintered magnet

A method for producing a magnetic powder includes the steps of: mixing neodymium oxide, boron, and iron to prepare a first mixture; adding and mixing calcium to the first mixture to prepare a second mixture; mixing an alkali metal with the second mixture to prepare a third mixture; and placing a carbon sheet on the third mixture, placing silica sand (SiOsand) thereon, and then heating the same to a temperature of 800&#xb0; C. to 1100&#xb0; C.

Method for producing magnetic powder and magnetic powder

A method of preparing a MnB-based magnetic material, the method including the steps of preparing a mixture including manganese oxide and boron, and heat-treating the mixture under an inert atmosphere, a MnB-based magnetic material prepared thereby, and a material absorbing or shielding electromagnetic waves, or a semiconductor, electronic, communication, or display device including the MnB-based magnetic material, are provided.

Magnetic material and preparation method thereof

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Daejeon, South Korea

Juneho In