Patents by Inventor Wancheng FU

Wancheng FU 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).

  • R-T-B based permanent magnet material and method for preparing the same
    Patent number: 11837390
    Abstract: The present invention relates to an R-T-B based permanent magnet material, having a composition of RxTyTmqBz (at. %), wherein 13?x?15.5, 0.5?q?3, 0.85?z?1, y=100?x?q?z; wherein R is LRaHR1-a, LR is one selected from the group consisting of Pr, Nd, PrNd, or a combination thereof, HR is one selected from the group consisting of Dy and Tb, or a combination thereof, and 0.95?a?1; wherein T is one selected from the group consisting of Fe and Co, or a combination thereof; and Tm is a transition metal. The advantage of the method is that: plating a heavy rare earth film on alloy flakes using a magnetron sputtering device, and the coercivity of the magnet is significantly increased simply by having a “core-shell” structure without long time diffusion heat treatment.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: December 5, 2023
    Assignee: NINGBO KETIAN MAGNET CO., LTD.
    Inventors: Changjiang Yan, Nijian Qian, Wancheng Fu
  • R-T-B BASED PERMANENT MAGNET MATERIAL AND METHOD FOR PREPARING THE SAME
    Publication number: 20230049109
    Abstract: The present invention relates to an R-T-B based permanent magnet material, having a composition of RxTyTmqBz (at. %), wherein 13?x?15.5, 0.5?q?3, 0.85?z?1, y=100?x?q?z; wherein R is LRaHR1-a, LR is one selected from the group consisting of Pr, Nd, PrNd, or a combination thereof, HR is one selected from the group consisting of Dy and Tb, or a combination thereof, and 0.95?a?1; wherein T is one selected from the group consisting of Fe and Co, or a combination thereof; and Tm is a transition metal. The advantage of the method is that: plating a heavy rare earth film on alloy flakes using a magnetron sputtering device, and the coercivity of the magnet is significantly increased simply by having a “core-shell” structure without long time diffusion heat treatment.
    Type: Application
    Filed: July 26, 2019
    Publication date: February 16, 2023
    Inventors: Changjiang YAN, Nijian QIAN, Wancheng FU