Patents by Inventor Yachao Sun

Yachao Sun 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).

  • Low-cost double-main-phase Ce permanent magnet alloy and its preparation method
    Patent number: 9892832
    Abstract: The invention discloses a low-cost double-main-phase Ce permanent magnet alloy and its preparation method, and belongs to technical field of rare earth permanent magnet material. The Ce permanent magnet alloy has a chemical formula of (Cex,Re1-x)aFe100-a-b-cBbTMc in mass percent, wherein 0.4?x?0.8, 29?a?33, 0.8?b?1.5, 0.5?c?2, Re is one or more selected from Nd, Pr, Dy, Tb and Ho elements, and TM is one or more selected from Ga, Co, Cu, Nb and Al elements; the Ce permanent magnet alloy has a double-main-phase structure with a low HA phase in (Ce,Re)—Fe—B and a high HA phase in Nd—Fe—B. The double-main-phase Ce permanent magnet alloy of the present invention prepared by using a double-main-phase alloy method greatly lowers the production cost of magnet while maintaining excellent magnetic performances.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 13, 2018
    Assignee: CENTRAL IRON AND STEEL RESEARCH INSTITUTE
    Inventors: Wei Li, Minggang Zhu, Haibo Feng, Anhua Li, Shulin Huang, Yanfeng Li, Yachao Sun, Jingdai Wang
  • Low-Cost Double-Main-Phase Ce Permanent Magnet Alloy and its Preparation Method
    Publication number: 20140065004
    Abstract: The invention discloses a low-cost double-main-phase Ce permanent magnet alloy and its preparation method, and belongs to technical field of rare earth permanent magnet material. The Ce permanent magnet alloy has a chemical formula of (Cex,Re1-x)aFe100-a-b-cBbTMc in mass percent, wherein 0.4?x?0.8, 29?a?33, 0.8?b?1.5, 0.5?c?2, Re is one or more selected from Nd, Pr, Dy, Tb and Ho elements, and TM is one or more selected from Ga, Co, Cu, Nb and Al elements; the Ce permanent magnet alloy has a double-main-phase structure with a low HA phase in (Ce,Re)—Fe—B and a high HA phase in Nd—Fe—B. The double-main-phase Ce permanent magnet alloy of the present invention prepared by using a double-main-phase alloy method greatly lowers the production cost of magnet while maintaining excellent magnetic performances.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 6, 2014
    Applicant: CENTRAL IRON AND STEEL RESEARCH INSTITUTE
    Inventors: Wei Li, Minggang Zhu, Haibo Feng, Anhua Li, Shulin Huang, Yanfeng Li, Yachao Sun, Jingdai Wang