Patents by Inventor Fangwei GUO

Fangwei GUO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for preparation of dense HfC(Si)—HfBcomposite ceramic
    Patent number: 11180419
    Abstract: A method for the preparation of a dense HfC(Si)—HfB2 composite 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)—HfB2 composite ceramic has a density of 94.0%-100% and uniformly dispersed grains.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: November 23, 2021
    Assignee: SHANGHAI JIAO TONG UNIVERSITY
    Inventors: Wei Hao, Xiaofeng Zhao, Na Ni, Huangyue Cai, Yao Yao, Meiyu Yi, Fangwei Guo
  • METHOD FOR PREPARATION OF DENSE HfC(Si)-HfB2 COMPOSITE CERAMIC
    Publication number: 20210179499
    Abstract: A method for the preparation of a dense HfC(Si)—HfB2 composite 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)—HfB2 composite ceramic has a density of 94.0%-100% and uniformly dispersed grains.
    Type: Application
    Filed: February 26, 2021
    Publication date: June 17, 2021
    Inventors: Wei HAO, Xiaofeng ZHAO, Na NI, Huangyue CAI, Yao YAO, Meiyu YI, Fangwei GUO