公开(公告)号：US20240124365A1

公开(公告)日：2024-04-18

申请号：US18209905

申请日：2023-06-14

申请人： North Minzu University

发明人： Youjun LU ,  Lutong YANG ,  Xiang LIU ,  Chuyun WANG ,  Wuyang SONG ,  Jiahao XU

IPC分类号： C04B35/58 ,  C04B35/626 ,  C04B35/645

CPC分类号： C04B35/58028 ,  C04B35/62625 ,  C04B35/62655 ,  C04B35/6268 ,  C04B35/645

摘要： A preparation method of submicron powder of high-entropy nitride via nitride thermal reduction with mechano-chemical assistance, comprising material preparation—grinding—activation—preforming—reaction. In the present invention, high-entropy metal nitride and silicon nitride is used as raw materials, soft mechanochemical activation technologies are used to reduce reaction activation energy of the system, thereafter, by thermal reduction of the nitride, high-purity high-entropy nitride powder is prepared with solid phase methods, and the shortage of high-purity high-entropy nitride powder is addressed. There is no impure phase in the (Hf0.2Zr0.2Ti0.2Nb0.2Ta0.2)N high entropy powder prepared according to the present invention, and a single phase solid solution of good crystallinity is formed, and distribution of elements and ingredients in the powder is even, no foreign element is present, and oxygen content is controlled to be less than 0.3%.