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1.发明公开公开(公告)号：US20240212899A1
公开(公告)日：2024-06-27
申请号：US18486470
申请日：2023-10-13
Inventor： Haijun PENG , Yang LUO , Zilong WANG , Shengjie ZHU , Dunbo YU , Hongbin ZHANG , Weikang SHAN , Tianjiao MA , Shuai CUI
CPC classification number: H01F1/059 , B22F1/05 , B22F1/065 , B22F1/142 , B22F1/145 , B22F9/22 , C22C33/0235 , C22C38/001 , C22C38/005 , B22F2201/016 , B22F2201/02 , B22F2201/20 , B22F2301/355 , B22F2304/10 , B22F2998/10 , B22F2999/00 , C22C2202/02
Abstract: Disclosed are anisotropic samarium-iron-nitrogen magnetic alloy powder and a preparation method therefor. The anisotropic samarium-iron-nitrogen magnetic alloy powder has a chemical formula of Sm2Fe17N3, and has a Th2Zn17 crystal structure. In the alloy powder, the granularity is: D90≤5 μm and D10≥0.5 μm, the average sphericity ≥0.7, the coercivity Hcj≥10 kOe, and the square degree Q≥0.5. The preparation method includes: S1: mixing iron powder, samarium oxide powder and calcium granules uniformly; S2: placing the mixture into a rotating heat treatment furnace, adding high-temperature-resistant balls, performing vacuumizing, introducing a reductive diffusion protective gas, and heating a furnace body; S3: cooling the furnace body, performing vacuumizing, and introducing a nitriding gas; and S4: taking out and separating the cooled powder and balls, washing the powder, and drying the powder in a vacuum environment to obtain the anisotropic samarium-iron-nitrogen magnetic alloy powder.
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公开(公告)号：US20240212898A1
公开(公告)日：2024-06-27
申请号：US18486440
申请日：2023-10-13
Inventor： Yang LUO , Ze ZHANG , Zilong WANG , Yuanfei YANG , Wenlong YAN , Dunbo YU , Tianhao LI , Wenjian YAN , Tengfei HU
CPC classification number: H01F1/0578 , H01F1/0558 , H01F41/0266 , H01F41/028 , H02K15/03
Abstract: Disclosed are a gradient ring-shaped bonded magnet and a preparation method therefor, and a motor. The gradient ring-shaped bonded magnet includes: a magnet body and at least one reinforcement layer. The magnet body is a ring-shaped cylinder; the reinforcement layer is in pressing fit with a surface of the magnet body; a material of the magnet body is a first permanent magnet, and a material of the reinforcement layer is a second permanent magnet; and the coercivity property, the remanence property and/or the maximum working temperature of the second permanent magnet are/is higher than those of the first permanent magnet.
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3.发明公开公开(公告)号：US20230321631A1
公开(公告)日：2023-10-12
申请号：US18027041
申请日：2021-08-27
Applicant: Rare Earth Functional Materials (Xiong 'an) Innovation Center Co., Ltd. , GRIREM ADVANCED MATERIALS CO., LTD , GRIREM HI-TECH CO., LTD.
Inventor： Yongqi ZHANG , Zheng ZHAO , Xiaowei HUANG , Yongke HOU , Meisheng CUI , Zhizhe ZHAI , Zongyu FENG , Juanyu YANG , Yang XU
CPC classification number: B01J21/066 , B01J23/10 , B01J37/038 , B01J37/009 , B01J37/08
Abstract: The present disclosure provides a cerium-zirconium-based composite oxide with a core-shell structure and a preparation method thereof, a catalyst system using the cerium-zirconium-based composite oxide, a catalytic converter for purifying tail gas by using the catalyst system, and application of the catalyst system or the catalytic converter in motor vehicle exhaust purification, industrial waste gas treatment or catalytic combustion. In the present invention, the cerium-zirconium-based composite oxide with a core-shell structure oxygen storage material is prepared by a step-by-step precipitation method. On the one hand, yttrium and a part of zirconium and cerium are precipitated on a cerium-zirconium surface, where the post-precipitation of yttrium is to segregate yttrium ions (Y3+) on a grain boundary surface, thus reducing lattice surface energy, pinning the grain boundary surface, making the migration of the grain boundary surface difficult, controlling the growth of grains.
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公开(公告)号：US12227685B2
公开(公告)日：2025-02-18
申请号：US17441927
申请日：2020-10-30
Applicant: GRIREM ADVANCED MATERIALS CO., LTD. , GRIREM HI-TECH CO., LTD. , Rare Earth Functional Materials (Xiong 'an) Innovation Center Co., Ltd.
Inventor： Jinqiu Yu , Liang Luo , Chengpeng Diao , Lei Cui , Hao Wu , Huaqiang He
Abstract: The present invention relates to a rare earth halide scintillating material. The material has a general chemical formula La1-xCexBr3+y, wherein 0.001x1, and 0.0001y0.1. The rare earth halide scintillating material involved in the present invention has excellent scintillation properties of high light output, high energy resolution, and fast decay.
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公开(公告)号：US20240376011A1
公开(公告)日：2024-11-14
申请号：US18780988
申请日：2024-07-23
Applicant: GRIREM HI-TECH CO., LTD. , GRIREM ADVANCED MATERIALS CO., LTD. , Rare Earth Functional Materials (Xiong 'an) Innovation Center Co., Ltd.
Inventor： Xiaowei HUANG , Juanyu YANG , Ning WANG , Zongyu FENG , Lei DU , Yuanyuan ZHENG , Yanxiao LIU , He ZHANG
IPC: C04B35/48 , C04B35/626
Abstract: Disclosed are a grain boundary and surface-doped rare earth zirconium-based ceramic material and a preparation method and application thereof, and part of doped elements are positioned at the grain boundary and surface of the rare earth zirconium-based ceramic material by a step-by-step doping method. The sintering activity of the rare earth zirconium-based ceramic material can be changed by adjusting the type and content of doping elements at the grain boundary and the surface, thereby enabling the control of the grain size and the grain boundary number and characteristics of the rare earth zirconium-based ceramic material, and finally optimizing the properties, such as electrical and mechanical properties, of the material. The doping method has the advantages of simple process, low cost and high universality, and can meet the requirements of different rare earth zirconium-based ceramics on doping elements, and thus is suitable for large-scale application.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240359164A1
公开(公告)日：2024-10-31
申请号：US18770265
申请日：2024-07-11
Applicant: GRIREM HI-TECH CO., LTD. , Rare Earth Functional Materials (Xiong 'an) Innovation Center Co., Ltd. , GRIREM ADVANCED MATERIALS CO., LTD.
Inventor： Zheng ZHAO , Xiaowei HUANG , Yongqi ZHANG , Yongke HOU , Zongyu FENG , Weixin ZHAO , Yang XU
IPC: B01J23/656 , B01J35/57 , B01J37/02 , B01J37/08 , B01J37/12
CPC classification number: B01J23/6562 , B01J35/57 , B01J37/0215 , B01J37/08 , B01J37/12
Abstract: Disclosed are a grain boundary and surface-loaded noble metal catalyst, a preparation method and an application thereof. The noble metal is dispersed at the grain boundary and surface of alumina and/or a rare earth manganese-zirconium composite oxide to form a multiphase interface, which achieves the following beneficial technical effects: firstly, the multiphase interface has a larger steric hindrance and a stronger anchoring effect, which can inhibit the migration, agglomeration, and growth of the noble metal at high temperatures, increase the high-temperature stability and catalytic performance of the noble metal, and reduce the usage of the noble metal; secondly, the multiphase interface exhibits a synergistic catalytic effect, which can reduce the activation energy of lattice oxygen and increase the quantity of active oxygen, thereby enhancing the NO oxidation and low-temperature catalytic activity.
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公开(公告)号：US11987868B2
公开(公告)日：2024-05-21
申请号：US17090703
申请日：2020-11-05
Inventor： Yang Luo , Zilong Wang , Yuanfei Yang , Zhou Hu , Dunbo Yu , Jiajun Xie , Yifan Liao , Zhongkai Wang
CPC classification number: C22C38/005 , B22F1/142 , B22F9/04 , C22C1/1084 , H01F1/0576 , B22F2009/041 , B22F2201/013 , B22F2201/20 , B22F2301/355 , C22C2202/02
Abstract: A method for preparing a rare earth anisotropic bonded magnetic powder, comprises the following steps: (1) preparing raw powder with RTBH as the main component, wherein, R is Nd or Pr/Nd, and T is a transition metal containing Fe; (2) adding La hydride or Ce hydride and copper powder to the raw powder to form a mixture; (3) subjecting the mixture to atmosphere diffusion heat treatment to give the rare earth anisotropic bonded magnetic powder.
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公开(公告)号：US20210407713A1
公开(公告)日：2021-12-30
申请号：US17331555
申请日：2021-05-26
Applicant: GRIREM ADVANCED MATERIALS CO., LTD. , GRIREM HI-TECH CO., LTD. , GRIREM (RONGCHENG) CO., LTD.
Inventor： Yang LUO , Wei ZHU , Dunbo YU , Zilong WANG , Hongbin ZHANG , Xinyuan BAI , Xiao LIN , Haijun PENG , Jiajun XIE
Abstract: The present invention relates to a modified sintered Nd—Fe—B magnet, and a preparation method and a use thereof. The modified sintered Nd—Fe—B magnet is prepared by performing grain boundary diffusion on a matrix, wherein the matrix is a sintered Nd—Fe—B magnet; a grain boundary diffusion source for the grain boundary diffusion consists of a first diffusion source and a second diffusion source; the first diffusion source is a PrMx alloy, M being at least one selected from a group consisted of Cu, Al, Zn, Mg, Ga, Sn, Ag, Pb, Bi, Ni, Nb, Mn, Co, Fe, Ti, Cr, Zr, Mo and Ge; and the second diffusion source is heavy rare earth Dy and/or Tb. A wider and longer diffusion channel formed by a low-melting-point alloy containing Pr preferentially entering the inside of the magnet is used as a channel for rapid diffusion of a heavy rare earth element
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公开(公告)号：US12142403B2
公开(公告)日：2024-11-12
申请号：US17331544
申请日：2021-05-26
Applicant: GRIREM HI-TECH CO., LTD. , GRIREM ADVANCED MATERIALS CO.,LTD. , Grirem (Rongcheng) Co., Ltd.
Inventor： Yang Luo , Yuanfei Yang , Zilong Wang , Dunbo Yu , Jiajun Xie , Kaiwen Wu , Yifan Liao , Jichen Jia
Abstract: An anisotropic bonded magnet and a preparation method thereof are provided. Through a method of stacking magnets which are different in content of SmFeN and/or have different densities, the magnets in the middle have high properties and the magnets at two ends and/or the periphery have low properties, thereby compensating for a property deviation caused by a difference in densities during a pressing process, and improving the property uniformity of the magnets in an axial direction. The method avoids the phenomenon of non-uniform magnetic field orientation and density in a height direction during orientation and densification as well as the phenomenon of low in the middle and high at two ends.
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公开(公告)号：US11932793B2
公开(公告)日：2024-03-19
申请号：US17748789
申请日：2022-05-19
Applicant: GRIREM ADVANCED MATERIALS CO., LTD. , GRIREM HI-TECH CO., LTD. , Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd.
Inventor： Ronghui Liu , Shaowei Qin , Yuanhong Liu , Yanfeng Li , Xiaoxia Chen , Xiaole Ma , Yuan Xue
CPC classification number: C09K11/7774 , C09K11/02 , H01L33/502 , C01P2004/84
Abstract: The invention relates to a phosphor with garnet structure and a light-emitting device comprising the phosphor, wherein the phosphor includes the following components in percentage by weight: 38.47-45.19% of Y element, 9.49-22.09% of Al element, 2.06-24.31% of Ga element, 27.3-32.04% of O element, 0.43-1.46% of Ce element. In the phosphor particles, the shortest distance from the surface of one side of the particle to the surface of the opposite side through the centroid of the particle is defined as R, the longest distance is R1, and 5 μm≤R≤40 μm; any distance from the particle surface to the centroid is r, and 0
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