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:
Sep. 18, 2018
Filed:
May. 31, 2013
Hongwei LI, Beijing, CN;
Yang Luo, Beijing, CN;
Dunbo Yu, Beijing, CN;
Kuoshe LI, Beijing, CN;
Wenlong Yan, Beijing, CN;
Shipeng LI, Beijing, CN;
Yongqiang Yuan, Beijing, CN;
Haijun Peng, Beijing, CN;
Hongwei Li, Beijing, CN;
Yang Luo, Beijing, CN;
Dunbo Yu, Beijing, CN;
Kuoshe Li, Beijing, CN;
Wenlong Yan, Beijing, CN;
Shipeng Li, Beijing, CN;
Yongqiang Yuan, Beijing, CN;
Haijun Peng, Beijing, CN;
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS, Beijing, CN;
GRIREM ADVANCED MATERIALS CO., LTD., Beijing, CN;
Abstract
A rare-earth permanent magnetic powder, a bonded magnet containing thereof and a device using the bonded magnet are provided of the present disclosure. The rare-earth permanent magnetic powder comprises: 70 vol % to 99 vol % of a hard magnetic phase and 1 vol % to 30 vol % of a soft magnetic phase, the hard magnetic phase has a TbCustructure, and the grain size of the hard magnetic phase is 5 nm to 100 nm; the soft magnetic phase is a Fe phase having a bcc structure, the average grain size of the soft magnetic phase is 1 nm to 30 nm, and the standard deviation of the grain size is below 0.5σ.