公开(公告)号：EP3882227A1

公开(公告)日：2021-09-22

申请号：EP19902209.6

申请日：2019-01-08

申请人： Kunming University Of Science And Technology

发明人： FENG, Jing ,  WU, Peng ,  GE, Zhenhua ,  SONG, Peng ,  CHEN, Lin ,  WANG, Jun

IPC分类号： C04B35/50 ,  C04B35/495 ,  C04B35/626

摘要： Zirconia/titanium oxide/cerium oxide doped rare earth tantalum/niobate RETa/NbO 4 ceramic powder and preparation method therefor. The Zirconia/titanium oxide/cerium oxide doped rare earth tantalum/niobate RETa/NbO 4 ceramic powder has a chemical general formula RE 1-x (Ta/Nb) 1-x (Zr/Ce/Ti) 2x O 4 , 0 1 , the partical size is 10-70 µm, and the ceramic powder is spherical. During preparation, a raw material is ball-milled, reacts by adopting a high-temperature solid phase method, and then mixes with a solvent and an organic adhesive to obtain slurry C; centrifugal atomization is performed to obtain dry granules, and then the dry granules are sintered to obtain the Zirconia/titanium oxide/cerium oxide doped rare earth tantalum/niobate RETa/NbO 4 ceramic powder which satisfies the requirements of an APS technology for ceramic powder.

公开(公告)号：EP3904555A9

公开(公告)日：2022-03-16

申请号：EP19903063.6

申请日：2019-11-12

申请人： Kunming University Of Science And Technology

发明人： FENG, Jing ,  WU, Fushuo ,  ZHENG, Qi ,  YANG, Kailong ,  LI, Chao ,  SONG, Peng ,  CHONG, Xiaoyu ,  GE, Zhenhua ,  CHEN, Lin ,  WANG, Jun

IPC分类号： C23C4/129

摘要： The present disclosure belongs to the field of preparation technology and provides an ultralimit alloy and a preparation method therefor. The ultralimit alloy comprises an alloy matrix. A bonding layer and a ceramic layer are successively deposited on a surface of the alloy matrix. The alloy matrix includes one of a magnesium alloy matrix, an aluminium alloy matrix, a titanium alloy matrix, an iron alloy matrix, a nickel alloy matrix, a copper alloy matrix, a zirconium alloy, and a tin alloy. For an ultralimit magnesium alloy, an ultralimit aluminium alloy, an ultralimit nickel alloy, an ultralimit titanium alloy, an ultralimit iron alloy and an ultralimit copper alloy, the bonding layer is a composite bonding layer, the ceramic layer is a composite ceramic layer, and the outside of the composite ceramic layer is further successively deposited with a reflecting layer, a catadioptric layer, an insulating layer and a carbon foam layer. For an ultralimit zirconium alloy, the bonding layer is a composite bonding layer, the ceramic layer is a composite ceramic layer, and the outside of the composite ceramic layer is further successively deposited with a seal coating layer, a reflecting layer, a catadioptric layer and an electrically insulating layer. For an ultralimit tin alloy, a surface of a tin alloy matrix is successively deposited with a bonding layer, a ceramic layer, a seal coating layer, a reflecting layer, a catadioptric layer and an insulating layer. By depositing a plurality of coating layers on a surface of an alloy matrix, the service temperature of the alloy matrix can be increased to 100-500°C higher than the melting point of the original alloy matrix, so as to achieve the use of an ultralimit alloy in an ultralimit environment.