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:
Jan. 14, 2020
Filed:
May. 08, 2017
Ningbo Co-star Materials Hi-tech Co., Ltd., Ningbo, CN;
Ming Li, Ningbo, CN;
Daoliang Pan, Ningbo, CN;
Guangchun Su, Ningbo, CN;
Jian Hu, Ningbo, CN;
Yonglin Liang, Ningbo, CN;
Shuxia Cheng, Ningbo, CN;
NINGBO CO-STAR MATERIALS HI-TECH CO., LTD., Ningbo, CN;
Abstract
A rare earth-cobalt-based composite magnetic material includes a rare earth-cobalt-based composite material and rare earth oxides, wherein the mass percent of the rare earth-cobalt-based composite material is 40 wt %-98.55 wt %. The composite magnetic material is obtained by melting and casting the rare earth-cobalt-based composite material into ingots, hydrogen decrepitation and the addition of the rare earth oxides, jet milling, blending, orientation and molding, cold isostatic pressing and heat treatment. Low-cost rare earth oxides are introduced, the remanence of the rare earth-cobalt-based material is controlled by controlling the content of the rare earth oxides, and the coercive force of the rare earth-cobalt-based material is raised to reduce the cost by optimizing the micro-structure and the composition.