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:
Nov. 23, 2021
Filed:
Feb. 26, 2021
Shanghai Jiao Tong University, Shanghai, CN;
Wei Hao, Shanghai, CN;
Xiaofeng Zhao, Shanghai, CN;
Na Ni, Shanghai, CN;
Huangyue Cai, Shanghai, CN;
Yao Yao, Shanghai, CN;
Meiyu Yi, Shanghai, CN;
Fangwei Guo, Shanghai, CN;
SHANGHAI JIAO TONG UNIVERSITY, Shanghai, CN;
Abstract
A method for the preparation of a dense HfC(Si)—HfBcomposite ceramic. hafnium oxide powders, nano-sized carbon black and silicon hexaboride powders are mixed in a molar ratio of (1-10):(1-20):(1-5) to obtain a powder mixture. The powder mixture is subjected to ball milling, dried and transferred to a graphite mold for spark plasma sintering. In this way, an in-situ carbon-boron reduction reaction and the sintering densification are completed in one step, and the obtained HfC(Si)—HfBcomposite ceramic has a density of 94.0%-100% and uniformly dispersed grains.