公开(公告)号：US11673839B1

公开(公告)日：2023-06-13

申请号：US18098207

申请日：2023-01-18

Applicant: GUILIN UNIVERSITY OF TECHNOLOGY

Inventor： Chunchun Li ,  Deqin Chen ,  Hongxiang Xiao ,  Guobin Zhu ,  Qinghua Shen ,  Laijun Liu

IPC: C04B35/50 ,  C04B35/505 ,  C04B35/495 ,  C04B35/626 ,  C04B35/624 ,  C04B41/48 ,  C04B41/83 ,  C04B41/00

CPC classification number: C04B35/50 ,  C04B35/624 ,  C04B35/6261 ,  C04B35/62655 ,  C04B41/0072 ,  C04B41/4869 ,  C04B41/83 ,  C04B2235/3224 ,  C04B2235/606 ,  C04B2235/6583

Abstract: Disclosed are a ten-membered fergusonite structure high-entropy oxide ceramic and a preparation method thereof, where the high-entropy oxide ceramic has a monoclinic structure, with a chemical formula of RENbO4, and the RE is any ten rare-earth cations selected from a group consisting of La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Gd3+, Dy3+, Ho3+, Er3+, Tm3+, Yb3+, Lu3+ and Y3+. The ten rare-earth cations have a molar ratio of 1:1:1:1:1:1:1:1:1:1 and equal share of RE position. According to the application, by adopting solid state reaction, the fergusonite structure high-entropy oxide ceramic with single-phase structure, uniform element distribution and stable phase is obtained. The high-entropy oxide ceramic prepared by the application is simple in process, uniform in chemical composition and microstructure, and convenient to realize on-demand regulation on properties through a combination of different elements.