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11.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：US11518935B2
公开(公告)日：2022-12-06
申请号：US16612327
申请日：2018-09-13
Inventor： Ronghui Liu , Yuanhong Liu , Lei Chen , Ze Jiang , Lengleng Shao
Abstract: The present invention belongs to the technical field of inorganic luminescent materials, particularly relates to a nitride fluorescent material, and further discloses a light-emitting device containing such a fluorescent material. The nitride fluorescent material contains a compound with a structure like MmAlxSiyN3: aR, bEu, cCe. The fluorescent material has very high physical stability and chemical stability, and the fluorescent material is better in crystallization, and thus has relatively high external quantum efficiency. When being applied to a light-emitting device, the fluorescent material can fully exert the advantages of good stability and high external quantum efficiency, and the light-emitting efficiency and stability of the light-emitting device can be further improved.
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公开(公告)号：US20220173282A1
公开(公告)日：2022-06-02
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
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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公开(公告)号：US20220119704A1
公开(公告)日：2022-04-21
申请号：US17254225
申请日：2019-07-09
Applicant: GRIREM ADVANCED MATERIALS CO., LTD
Inventor： Ronghui LIU , Yuanhong LIU , Xiaoxia CHEN , Xiaole MA , Yuan XUE , Tongyu GAO
Abstract: The present invention discloses a red light and near-infrared light-emitting material and a light-emitting device. The red light and near-infrared light-emitting material contains a compound represented by a molecular formula, xA2O3.yIn2O3.bR2O3, wherein the element A is Sc and/or Ga; the element R is one or two of Cr, Yb, Nd or Er and necessarily includes Cr; and 0.001≤x≤1, 0.001≤y≤1, 0.001≤b≤0.2, and 0.001≤b/(x+y)≤0.2. The light-emitting material can be excited by a technically mature blue light source to emit light with a high-intensity wide-spectrum or multiple spectra. Compared with existing materials, the light-emitting material has higher luminescent intensity. The light-emitting device uses an LED chip to combine an infrared light-emitting material and a visible light light-emitting material. In this way, the same LED chip can emit near-infrared light and visible light at the same time, which greatly simplifies the packaging process and reduces the packaging cost.
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Patent Agency Ranking
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：US20210151226A1
公开(公告)日：2021-05-20
申请号：US16612294
申请日：2018-06-20
Inventor： YANG LUO , HONGBIN ZHANG , ZHOU HU , DUNBO YU , NINGTAO QUAN , YUANFEI YANG , WENLONG YAN , JIAJUN XIE
Abstract: The present invention discloses rare earth-bonded magnetic powder and a preparation method therefor. The bonded magnetic powder is of a multilayer core-shell structure, and comprises a core layer and an antioxidant layer (3), wherein the core layer is formed by RFeMB, R is Nd and/or PrNd, and M is one or more of Co, Nb, and Zr; and the core layer is coated with an iron-nitrogen layer (2). In addition, the present invention also discloses the preparation method for the rare earth-bonded magnetic powder and a bonded magnet. The oxidation and corrosion of magnetic raw powder during phosphorization and subsequent treatment process are effectively prevented, thereby further improving the long-term temperature resistance and environmental tolerance of the material.
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公开(公告)号：US20210139775A1
公开(公告)日：2021-05-13
申请号：US16612327
申请日：2018-09-13
Inventor： RONGHUI LIU , Yuanhong LIU , LEI CHEN , ZE JIANG , LENGLENG SHAO
Abstract: The present invention belongs to the technical field of inorganic luminescent materials, particularly relates to a nitride fluorescent material, and further discloses a light-emitting device containing such a fluorescent material. The nitride fluorescent material contains a compound with a structure like MmAlxSiyN3: aR, bEu, cCe. The fluorescent material has very high physical stability and chemical stability, and the fluorescent material is better in crystallization, and thus has relatively high external quantum efficiency. When being applied to a light-emitting device, the fluorescent material can fully exert the advantages of good stability and high external quantum efficiency, and the light-emitting efficiency and stability of the light-emitting device can be further improved.
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19.发明申请公开(公告)号：US20180355243A1
公开(公告)日：2018-12-13
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
CPC classification number: C09K11/676 , C09K11/0883 , C09K11/665 , C09K11/666 , C09K11/7734 , H01L33/502 , H01L33/504
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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20.发明申请公开(公告)号：US20180268971A1
公开(公告)日：2018-09-20
申请号：US15868063
申请日：2018-01-11
Applicant: GRIREM ADVANCED MATERIALS CO., LTD.
Inventor： Guiyong Wu , Yang Luo , Hongwei Li , Yuanfei Yang , Dunbo Yu , Ningtao Quan , Chao Yuan , Wenlong Yan
IPC: H01F1/059 , H01F41/02 , C22C38/00 , C22C38/14 , C22C38/04 , C22C38/06 , C22C38/02 , C22C38/10 , C22C38/12 , C22C38/28
Abstract: Provided are a highly thermostable rare-earth permanent magnetic material, a preparation method thereof and a magnet containing the same. A composition of the rare-earth permanent magnetic material by an atomic percentage is as follows: SMxRaFe100-x-y-z-aMyNz, wherein R is at least one of Zr and Hf, M is at least one of Co, Ti, Nb, Cr, V, Mo, Si, Ga, Ni, Mn and Al, x+a is 7-10%, a is 0-1.5%, y is 0-5% and z is 10-14%.
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