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公开(公告)号：US20240355515A1
公开(公告)日：2024-10-24
申请号：US18548206
申请日：2022-01-17
发明人： Weiguo Mou , Jiaying Huang
IPC分类号： H01F1/057 , B22F3/16 , B22F3/24 , B22F9/02 , B22F9/04 , C21D1/84 , C21D6/00 , C22C33/04 , C22C38/00 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , H01F41/02
CPC分类号： H01F1/0577 , B22F3/16 , B22F3/24 , B22F9/023 , B22F9/04 , C21D1/84 , C21D6/007 , C22C33/04 , C22C38/002 , C22C38/005 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , H01F41/0293 , B22F2003/248 , B22F2009/044 , B22F2202/05 , B22F2301/355 , B22F2998/10 , B22F2999/00 , C22C2202/02
摘要： Disclosed are an R-T-B magnet and a preparation method therefor. The R-T-B magnet comprises the following components: R≥29 wt. %, R being a rare earth element and containing Nd, wherein Nd is ≥22 wt. %; 0.2-0.75 wt. % of Ti+Nb; 0.05-0.45 wt. % of Cu; 0.955-1.15 wt. % of B; and 58-69 wt. % of Fe, wherein wt. % is the ratio of the mass of each component to the total mass of the components; and the mass ratio of Ti to Nb is (1-5):1. According to the present invention, the matching relationship among the added elements in the R-T-B magnet is further optimized, and an R-T-B magnet with better magnetic properties such as relatively high residual magnetization, coercivity, and squareness can be prepared by using the formula.
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公开(公告)号：US20240351098A1
公开(公告)日：2024-10-24
申请号：US18684507
申请日：2022-08-26
CPC分类号： B22F1/054 , B22F1/056 , B22F9/04 , C01G35/00 , B22F2009/043 , B22F2009/044 , B22F2009/045 , B22F2301/20 , B22F2304/10 , B22F2998/10 , C01P2004/04 , C01P2004/52 , C01P2006/12 , C01P2006/80
摘要： A preparation of tantalum nanoparticles, its use, and a process for obtaining it by comminution, that is, a top-down process. The nanoparticle preparation has a composition, purity, defined particle granulometric profile and high specific surface area, making it useful in a variety of applications. A process for obtaining nanoparticles from mineral species containing tantalum through controlled comminution and without chemical reactions or contamination with reagents typical of nanoparticle synthesis. The process provides the large-scale obtaining of tantalum pentoxide nanoparticles with high purity, determined granulometric size profile and very high specific surface area, making their use practically viable in various industrial applications.
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3.发明公开公开(公告)号：US20240339252A1
公开(公告)日：2024-10-10
申请号：US18293355
申请日：2021-08-04
发明人： Akito IWASAKI , Yasutaka NAKAMURA , Tatsuya KITANO
CPC分类号： H01F1/0577 , B22F3/16 , B22F3/24 , B22F9/04 , C22C38/001 , C22C38/002 , C22C38/005 , H02K1/02 , B22F2003/248 , B22F2301/355 , B22F2998/10 , B22F2999/00 , C22C2200/00 , C22C2202/02
摘要： The present disclosure provides a rare earth sintered magnet satisfying the general formula (Nd, La, Sm)—Fe—B-M, where the element M is one or more elements selected from the group consisting of Cu, Al, and Ga, the rare earth sintered magnet including: a main phase including crystal grains based on an R2Fe14B crystal structure; a first subphase that is crystalline and mainly composed of an oxide phase represented by (Nd, La, Sm)—O; and a second subphase that is crystalline and mainly composed of an oxide phase represented by (Nd, La)—O. The concentration of Sm is higher in the first subphase than in the second subphase, and the concentration of the element M is higher in the second subphase than in the first subphase.
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公开(公告)号：US20240316629A1
公开(公告)日：2024-09-26
申请号：US18574127
申请日：2021-08-04
发明人： Xiaoping Li , Yajun Zhang , Xingyu Li , Wanyong Tuo , Jing Ma , Lei Liu , Saili Che
CPC分类号： B22F1/142 , B22F1/05 , B22F1/065 , B22F1/145 , B22F9/023 , B22F9/04 , C22C27/02 , B22F2201/00 , B22F2202/13 , B22F2301/20 , B22F2304/10 , B22F2998/10 , B22F2999/00
摘要： A method for preparing tantalum-tungsten alloy powder includes the following steps: providing a tantalum-tungsten alloy ingot; repeatedly smelting the tantalum-tungsten alloy ingot; forging a product of the previous step; placing the product of the previous step in a hydrogen atmosphere to perform a hydrogenation heat treatment; mechanically crushing the product of the previous step to obtain a coarse powder; sieving, from the coarse powder, a powder having a particle size ranging from a μm to b μm, wherein a=10-20 and b=50-60; performing dehydrogenation heat treatment on the product of the previous step under vacuum; adding a magnesium powder to the product of the previous step to perform a deoxygenation heat treatment; and performing plasma spheroidization treatment on the product of the previous step such that the sphericity of the powder reaches more than 99%.
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公开(公告)号：US12098447B2
公开(公告)日：2024-09-24
申请号：US17041014
申请日：2019-03-22
发明人： Mirjam Lilja , Jose Maria Tarrago Cifre , Ida Borgh , Malin Martensson , Ioannis Arvanitidis , Krystof Turba
CPC分类号： C22C29/08 , C22C29/005 , B22F3/15 , B22F2005/001 , B22F9/04 , B22F2009/043 , B22F2301/15 , B22F2302/10
摘要： A rock drill insert made of cemented carbide includes hard constituents of tungsten carbide (WC) in a binder phase of Ni—Cr, or Ni—Co—Cr, and a balance of WC and unavoidable impurities. The cemented carbide has a 3.5-18 wt % binder phase. The binder phase has >0 wt % Ni. The mass ratio Cr/(Ni+Co) is 0.02-0.19. A difference between the hardness at 0.3 mm depth at some point of the surface of the rock drill insert and the minimum hardness of the bulk of the rock drill insert is at least 30 HV3.
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公开(公告)号：US12083601B2
公开(公告)日：2024-09-10
申请号：US17722775
申请日：2022-04-18
摘要： A method for making a component comprising a high entropy alloy (HEA) includes combining a reaction component with a powdered HEA precursor, igniting the combination of the reaction component and the powdered HEA precursor to induce a self-propagating high-temperature synthesis (SHS) reaction and to form a solid HEA feedstock, converting the solid HEA feedstock into a powder HEA feedstock, and additively manufacturing at least a portion of the powder feedstock into a HEA component or HEA preformed shape approximating a desired shape of the component.
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公开(公告)号：US20240287649A1
公开(公告)日：2024-08-29
申请号：US18519490
申请日：2023-11-27
发明人： Peter POLCIK , Jurgen RAMM
IPC分类号： C22C1/04 , B22F3/087 , B22F3/105 , B22F5/04 , B22F9/04 , B32B15/00 , B32B15/01 , C22C1/047 , C22C19/03 , C22C19/07 , C23C14/00 , C23C14/02 , C23C14/08 , C23C14/14 , C23C14/16 , C23C14/32 , C23C14/34 , C23C28/00 , C23C28/02 , C23C28/04 , C23C30/00 , F01D5/28 , F01D25/00
CPC分类号： C22C1/0433 , B22F3/087 , B22F3/105 , B22F5/04 , B22F9/04 , B32B15/00 , B32B15/01 , C22C1/0416 , C22C1/047 , C22C19/03 , C22C19/07 , C23C14/0021 , C23C14/0036 , C23C14/025 , C23C14/027 , C23C14/08 , C23C14/081 , C23C14/083 , C23C14/085 , C23C14/14 , C23C14/16 , C23C14/325 , C23C14/3414 , C23C28/02 , C23C28/022 , C23C28/028 , C23C28/048 , C23C28/30 , C23C28/321 , C23C28/325 , C23C28/345 , C23C28/36 , C23C30/00 , C23C30/005 , F01D5/28 , F01D5/284 , F01D5/288 , F01D25/005 , B22F2003/1051 , C22C1/0458 , C22C2200/00 , F05D2220/30 , F05D2220/32 , F05D2230/30 , F05D2230/90 , F05D2300/175 , F05D2300/21 , F05D2300/611 , Y10T428/12458 , Y10T428/1259 , Y10T428/12597 , Y10T428/12604 , Y10T428/12611 , Y10T428/12639 , Y10T428/12667 , Y10T428/12771
摘要： A superalloy target wherein the superalloy target has a polycrystalline structure of random grain orientation, the average grain size in the structure is smaller than 20 μm, and the porosity in the structure is smaller than 10%. Furthermore, the invention includes a method of producing a superalloy target by powder metallurgical production, wherein the powder-metallurgical production starts from alloyed powder (s) of a superalloy and includes the step of spark plasma sintering (SPS) of the alloyed powder (s).
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8.发明公开公开(公告)号：US20240274333A1
公开(公告)日：2024-08-15
申请号：US18568831
申请日：2022-06-13
发明人： Bingqiang SHI , Zhongxin AN , Chubo DENG , Lei LIU , Yanmei JIN
IPC分类号： H01F1/057 , B22F3/16 , B22F3/24 , B22F9/02 , B22F9/04 , C22C33/02 , C22C35/00 , C22C38/00 , C22C38/06 , C22C38/14 , C22C38/16 , H01F41/02
CPC分类号： H01F1/0577 , B22F3/16 , B22F3/24 , B22F9/023 , B22F9/04 , C22C33/0207 , C22C33/0278 , C22C35/005 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/14 , C22C38/16 , H01F41/0266 , H01F41/0293 , B22F2003/248 , B22F2009/044 , B22F2201/20 , B22F2202/05 , B22F2301/355 , B22F2304/10 , B22F2998/10 , B22F2999/00 , C22C2202/02
摘要： A low-cost high-coercivity LaCe-rich neodymium-iron-boron permanent magnet, and a preparation method therefor and the use thereof are provided. The permanent magnet is prepared by mixing and sintering an LaCe-free and HRE-free neodymium-iron-boron main phase alloy and an LaCe-M alloy. An LaCe-free main phase alloy and an LaCe-M auxiliary phase alloy are respectively smelted at first, and then, the same are subjected to powder preparation, mixing, pressing, and sintering, thereby avoiding LaCe entering main phase crystal grains. The depth and concentration of HRE diffused into the magnet are effectively improved by using the characteristics of a low melting point and high flowability of an LaCe-rich crystal boundary phase, thereby improving the uniformity of components and structure distribution in the magnet.
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公开(公告)号：US20240253113A1
公开(公告)日：2024-08-01
申请号：US18560990
申请日：2022-02-18
CPC分类号： B22F1/054 , B22F9/04 , B22F9/24 , B22F2301/10 , B22F2304/052 , B22F2998/10
摘要： A copper powder containing copper particles, wherein the copper powder has a packed bulk density of 1.30 g/cm3 to 2.96 g/cm3, and wherein a 50% particle diameter D50 when a cumulative frequency is 50% in a volume-based particle diameter histogram of the copper particles, and a crystallite diameter D determined from a diffraction peak of a Cu (111) plane in an X-ray diffraction profile obtained by powder X-ray diffractometry of the copper powder using Scherrer's formula satisfies D/D50≥0.060.
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10.发明公开公开(公告)号：US20240191327A1
公开(公告)日：2024-06-13
申请号：US18525418
申请日：2023-11-30
发明人： Richard B. KANER , Sarah H. TOBERT , Reza MOHAMMADI , Andrew T. LECH , Miao XIE
CPC分类号： C22C27/04 , B22F9/04 , C22C1/02 , C22C1/045 , C22C1/1084 , C22C29/14 , C23C30/00 , C23C30/005 , B22F2005/001 , B22F2009/041
摘要： A composition includes tungsten (W); at least one element selected form the group of elements consisting of boron (B), beryllium (Be) and silicon (Si); and at least one element selected from the group of elements consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), ruthenium (Ru), hafnium (fi), tantalum (Ta), rhenium (Re), osmium (Os), iridium (Ir), lithium (Li) and aluminum (Al). The composition satisfies the formula W1-xMxXy wherein X is one of B, Be and Si; M is at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Hf, Ta, Re, Os, Ir, Li and Al; x is at least 0.001 and less than 0.999; and y is at least 4.0. A tool is made from or coated with this composition.
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