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. 12, 2025
Filed:
Mar. 24, 2022
Yunnan Huapu Quantum Material Co., Ltd, Yunnan, CN;
Roi Optoelectronics Technology Co, Ltd., Shanghai, CN;
Chongqing Institute of East China Normal University, Chongqing, CN;
East China Normal University, Shanghai, CN;
YUNNAN HUAPU QUANTUM MATERIAL CO., LTD, Yunnan, CN;
ROI OPTOELECTRONICS TECHNOLOGY CO, LTD., Shanghai, CN;
CHONGQING INSTITUTE OF EAST CHINA NORMAL UNIVERSITY, Chongqing, CN;
EAST CHINA NORMAL UNIVERSITY, Shanghai, CN;
Abstract
A method for preparing a boron carbide material includes: providing raw materials of a boron material, a carbon material and a rare earth oxide, wherein an element molar ratio B:C of the boron material to the carbon material is in a range of 4:1 to 4:7, and the rare earth oxide is in an amount of 5 wt % or less based on a total weight of the raw materials, mixing and milling the raw materials to obtain a mixture, compressing the mixture into a tablet form by a tablet press, and sintering the compressed mixture by a laser, wherein the laser has a laser wavelength of 980 nm, a laser power in a range of 100 to 3000 W, and a laser irradiation time of 3 to 60 s.