公开(公告)号：US20220112132A1

公开(公告)日：2022-04-14

申请号：US17418207

申请日：2019-01-08

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： JING FENG ,  PENG WU ,  ZHENHUA GE ,  PENG SONG ,  LIN CHEN ,  JUN WANG

IPC: C04B35/495 ,  C04B35/626 ,  C04B35/64

Abstract: The present disclosure relates to the technical field of ceramic powder preparation, and discloses a zirconia/titania/cerium oxide doped rare earth tantalum/niobate RETa/NbO4 ceramic powder and a preparation method thereof. A general chemical formula of the ceramic powder is RE1-x(Ta/Nb)1-x(Zr/Ce/Ti)2xO4, 0

公开(公告)号：US20220154347A1

公开(公告)日：2022-05-19

申请号：US17419250

申请日：2019-11-12

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： JING FENG ,  FUSHUO WU ,  QI ZHENG ,  KAILONG YANG ,  CHAO LI ,  PENG SONG ,  XIAOYU CHONG ,  ZHENHUA GE ,  LIN CHEN ,  JUN WANG

IPC: C23C28/00 ,  C23C4/02 ,  C23C4/073 ,  C23C4/11 ,  C23C14/08

Abstract: 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.

公开(公告)号：US20220144705A1

公开(公告)日：2022-05-12

申请号：US17418214

申请日：2019-11-14

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： JING FENG ,  LIN CHEN ,  XIAOYU CHONG ,  JUN WANG

IPC: C04B35/495 ,  C04B35/50 ,  C04B35/626 ,  C04B35/645

Abstract: The present disclosure discloses a rare earth tantalate ceramic resisting corrosion of a low melting point oxide. A general chemical formula of the ceramic is RETaO4. A method for preparing the ceramic includes: weighing RE2O3 powder and Ta2O5 powder and adding to a solvent to mix, and ball milling the mixed solution with a ball mill to obtain powder A; drying the powder A, and sieving the powder A for a first time to obtain powder B; placing the powder B in a mold for compaction, pre-sintering the powder B to form a block C, cooling the block C to room temperature, grounding the block C with a grinder, and sieving the block C for a second time to obtain powder D; and sintering the powder D to obtain the rare earth tantalate ceramic. The ceramic has high density and strong corrosion resistance to low melting point oxides.

公开(公告)号：US20220106234A1

公开(公告)日：2022-04-07

申请号：US17429529

申请日：2019-11-12

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： JING FENG ,  YUNXUAN ZHOU ,  XIAOYU CHONG ,  PENG WU ,  LIN CHEN ,  JUN WANG

IPC: C04B35/495 ,  C04B35/64 ,  C04B35/626

Abstract: The present disclosure provides a high-entropy rare earth-toughened tantalate ceramic. The ceramic is prepared by sintering Ta2O5 powder and x types of different RE2O3 powder, 4≤x≤9, and the molar ratio of the RE2O3 powders is 1. RE2O3 powder and Ta2O5 powder having the molar ratio of RE to Ta being 1:1 are weighed, a solvent is added for mixing, and ball milling is performed by a ball mill to obtain mixed powder M; the powder M is dried at a temperature of 650-850° C. for 1.5-2 h to obtain dried powder; the powder is sieved to obtain powder N, the powder N is placed in a mold for first pressing to obtain a rough blank, and the rough blank is then pressed for the second time to obtain a compact blank; the compact blank is sintered to obtain the high-entropy rare earth-toughened tantalate ceramic.