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:
Oct. 23, 2018
Filed:
Aug. 14, 2014
Applicant:
Hohai University, Nanjing, Jiangsu, CN;
Inventors:
Jianfeng Zhang, Jiangsu, CN;
Yuping Wu, Jiangsu, CN;
Gaiye Li, Jiangsu, CN;
Sheng Hong, Jiangsu, CN;
Wenmin Guo, Jiangsu, CN;
Assignee:
HOHAI UNIVERSITY, Nanjing, Jiangsu, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 21/064 (2006.01); C04B 35/583 (2006.01); C04B 35/626 (2006.01); C04B 35/628 (2006.01); C04B 35/63 (2006.01); C04B 35/64 (2006.01);
U.S. Cl.
CPC ...
C01B 21/0648 (2013.01); C04B 35/583 (2013.01); C04B 35/6262 (2013.01); C04B 35/6263 (2013.01); C04B 35/62655 (2013.01); C04B 35/62675 (2013.01); C04B 35/62807 (2013.01); C04B 35/6316 (2013.01); C04B 35/64 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/386 (2013.01); C04B 2235/441 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/604 (2013.01); C04B 2235/6567 (2013.01); C04B 2235/661 (2013.01); C04B 2235/668 (2013.01); C04B 2235/77 (2013.01); C04B 2235/96 (2013.01);
Abstract
A method for preparation of a high-density hexagonal boron nitride (hBN) ceramic material is disclosed. According to the method, the surface of hBN powder is coated with an evenly-dispersed SiOnanoparticle layer using tetraethyl orthosilicate as a precursor, and then the high-density hBN ceramic material is obtained by pressureless sintering. The relative density of the prepared hBN ceramic material is over 80%.