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:
Aug. 11, 2020
Filed:
Jul. 12, 2016
Ningbo Yunsheng Co., Ltd., Zhejiang, CN;
Ningbo Yunsheng Magnet Devices Technology Co., Ltd., Zhejiang, CN;
Xiangke Lv, Zhejiang, CN;
Chunguo Wang, Zhejiang, CN;
Min Zhang, Zhejiang, CN;
Yong Ding, Zhejiang, CN;
Qingzhong Yang, Zhejiang, CN;
Yiqun Hu, Zhejiang, CN;
Jiangfeng Wang, Zhejiang, CN;
NINGBO YUNSHENG CO., LTD., Zhejiang, CN;
NINGBO YUNSHENG MAGNET DEVICES TECHNOLOGY CO., LTD., Zhejiang, CN;
Abstract
A method for improvement of magnetic performance of sintered NdFeB magnet includes the following steps. Firstly, material containing element R, H and X is to be covered on a surface of the sintered NdFeB magnet to form a finish coat. After that, proceed with a diffusion treatment and an aging treatment to the sintered NdFeB magnet with the finish coat in the environment of vacuum or inert gas. R is at least one of such elements as Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. H is hydrogen. X is at least one of such elements as C, O, N, S, B, Cl and Si.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile