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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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公开(公告)号：US11923485B2
公开(公告)日：2024-03-05
申请号：US17254228
申请日：2019-08-22
Applicant: GRIREM ADVANCED MATERIALS CO., LTD
Inventor： Ronghui Liu , Yuanhong Liu , Xiaoxia Chen , Yuan Xue , Xiaole Ma
CPC classification number: H01L33/504 , C09K11/7708 , C09K11/77347 , C09K11/77348 , C09K11/7774 , C09K11/7776
Abstract: An optical device includes an LED chip, a visible-light luminescent material, and a near-infrared luminescent material, wherein a luminous power of light emitted by the near-infrared and visible-light luminescent materials in a band of 650-1000 nm under the excitation of the LED chip is A, and a sum of a luminous power of light emitted by the near-infrared and visible-light luminescent materials in a band of 350-650 nm under the excitation of the LED chip and a luminous power of residual light emitted by the LED chip in the band of 350-650 nm after the LED chip excites the near-infrared and visible-light luminescent materials is B, with B/A*100% being 0.1%-10%. According to the implementation where the optical device employs the LED chip to combine the near-infrared luminescent material and the visible-light luminescent material simultaneously.
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4.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：US20210310100A1
公开(公告)日：2021-10-07
申请号：US17267481
申请日：2019-08-09
Applicant: GRIREM ADVANCED MATERIALS CO., LTD.
Inventor： Xiaowei HUANG , Zongyu FENG , Xu SUN , Yang XU , Meng WANG , Liangshi WANG , Chao XIA , Xiangsheng LIU , Longsheng ZHAO , Yongqi ZHANG
Abstract: The present invention provides a process for metallurgy and separating a rare earth concentrate using a combination method, the process including: treating the rare earth concentrate containing bastnaesite by using a method including roasting under an atmosphere, leaching with hydrochloric acids, and roasting with a sulfuric acid, wherein stepping acid leaching with low-concentration hydrochloric acids is controlled during the leaching with the hydrochloric acids so as to obtain a rare earth solution with a high concentration (150-250 g/L REO), such that a leaching rate of Ce reaches 60% or more, and the content of F− in a leaching liquor is reduced by aging; and rare earth is further recovered from a leach residue by roasting with the sulfuric acid and leaching with water, and the total yield of the rare earth reaches 95% or more.
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Patent Agency Ranking
公开(公告)号：US10385265B2
公开(公告)日：2019-08-20
申请号：US16060548
申请日：2016-12-07
Applicant: Grirem Advanced Materials Co., Ltd.
Inventor： Ronghui Liu , Guantong Chen , Yuming Jin , Xiaole MA , Yuanhong Liu , Lengleng Shao
Abstract: The present disclosure provides a red phosphor powder, a preparation method thereof and a luminescent device comprising the red phosphor powder. The red phosphor powder comprises inorganic compounds containing an element A, an element D, an element X and manganese, wherein element A is one or more selected from a group of Li, Na and K and necessarily includes K; element D is composed of Ge and Si, or element D is composed of Si, Ge and Ti; and element X is one or more selected from a group of F, Br and Cl and necessarily includes F; and the inorganic compound has the same space group structure as K2GeF6, the space group structure being the hexagonal crystal system P-63mc(186). The red phosphor powder has a uniform morphology, a high luminescent efficiency and a good stability.
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公开(公告)号：US09671086B2
公开(公告)日：2017-06-06
申请号：US14443053
申请日：2013-12-20
Applicant: GRIREM ADVANCED MATERIALS CO., LTD.
Inventor： Ronghui Liu , Yuanhong Liu , Huaqiang He , Xiaowei Huang , Wei Gao , Tao He , Yunsheng Hu , Weidong Zhuang
CPC classification number: F21V9/16 , C09K11/0883 , C09K11/7734 , C09K11/7792 , F21K9/64 , F21V9/30 , F21Y2115/10 , H01L33/502 , H05B33/14 , Y02B20/181
Abstract: An oxynitride orange-red fluorescent substance and a light-emitting film or sheet and a light-emitting device comprising the same are disclosed. The chemical formula of the oxynitride orange-red fluorescent substance is MmAaSixNyOz:dR in which the element M is one or more of the elements selected from Ca, Sr and Ba, the element A is Al or a mixture of Al with one or more of the elements selected from Ga, La, Sc and Y, the element R is one or more of the elements selected from Ce, Eu and Mn, 0.8≦m≦1.2, 1
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公开(公告)号：US20160145489A1
公开(公告)日：2016-05-26
申请号：US14900198
申请日：2014-06-20
Inventor： Ronghui Liu , Huibing Xu , Xiaofang Zhou , Chunlei Zhao , Qian Ma , Yuanhong Liu , Huaqiang He , Xiaowei Huang
CPC classification number: C09K11/7792 , C09K11/0883 , C09K11/7721 , C09K11/7734 , C09K11/7749 , C09K11/7773 , C09K11/7774 , H01L33/504
Abstract: The present disclosure relates to a fluorescent powder and a light-emitting device including the same. The fluorescent powder includes an inorganic compound. The inorganic compound contains components including an element M, an element A, an element D, an element E, and an element R. The element M is selected from Eu, Ce, Mn, Tb, Dy, and Tm, the element A is selected from Mg, Ca, Sr, and Ba, the element D is selected from B, Al, Ga, In, La, Gd, Sc, Lu, and Y, the element E is selected from Si, Ge, Zr, and Hf, and the element R is at least two elements selected from N, O, F, and Cl. In a powder X-Ray Diffraction (XRD) spectrum with CoKα radiation, the inorganic compound at least has diffraction peaks within ranges of an Bragg angle (2θ) from 27.3° to 28.3°, 29.7° to 30.7°, 41.9° to 42.9°, and 43.5° to 44.5°.
Abstract translation: 本发明涉及一种荧光粉和包含该荧光粉的发光装置。 荧光粉包括无机化合物。 无机化合物含有包含元素M，元素A，元素D，元素E和元素R的成分。元素M选自Eu，Ce，Mn，Tb，Dy和Tm，元素A为 选自Mg，Ca，Sr和Ba，元素D选自B，Al，Ga，In，La，Gd，Sc，Lu和Y，元素E选自Si，Ge，Zr和Hf 元素R为选自N，O，F和Cl中的至少两种元素。 在具有CoKα辐射的粉末X射线衍射（XRD）光谱中，无机化合物至少在从27.3°至28.3°，29.7°至30.7°，41.9°至42.9°的布拉格角（2θ）范围内具有衍射峰 °，43.5°〜44.5°。
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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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