The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2023
Filed:
Nov. 28, 2018
Lg Chem, Ltd., Seoul, KR;
Ikjin Choi, Daejeon, KR;
Jung Goo Lee, Daejeon, KR;
Juneho In, Daejeon, KR;
Soon Jae Kwon, Daejeon, KR;
Hyounsoo Uh, Daejeon, KR;
Jinhyeok Choe, Daejeon, KR;
Ingyu Kim, Daejeon, KR;
Eunjeong Shin, Daejeon, KR;
Abstract
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° C., and sintering the heat-treated mixture at a temperature of 1000 to 1100° 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.