公开(公告)号：US12168818B2

公开(公告)日：2024-12-17

申请号：US18301024

申请日：2023-04-14

Applicant: HÖGANÄS AB (PUBL)

Inventor： Caroline Larsson ,  Ulf Engström ,  Christophe Szabo

IPC: C22C33/02 ,  B22F1/05 ,  B22F1/052 ,  B22F1/06 ,  B22F1/10 ,  B22F1/17 ,  B22F3/16 ,  B22F3/24 ,  B22F9/04 ,  C22C38/16

Abstract: A diffusion-bonded powder having an iron powder having 1-5%, preferably 1.5-4% and most preferably 1.5-3.5% by weight of copper particles diffusion bonded to the surfaces of the iron powder particles. The diffusion bonded powder is suitable for producing components having high sintered density and minimum variation in copper content. The iron powder may be produced by providing an atomized iron powder with an oxygen content of 0.3-1.2% by weight and with a carbon content of 0.1-0.5% by weight, and subjecting the atomized iron powder and a copper containing powder to a reduction annealing process in a reducing atmosphere to obtain the iron based powder.

公开(公告)号：US12165794B2

公开(公告)日：2024-12-10

申请号：US16260715

申请日：2019-01-29

Applicant: TDK CORPORATION

Inventor： Kazuhiro Yoshidome ,  Hiroyuki Matsumoto ,  Kenji Horino ,  Akito Hasegawa ,  Syota Goto ,  Masakazu Hosono ,  Hajime Amano ,  Isao Nakahata

IPC: H01F1/147 ,  B22D23/00 ,  B22F1/07 ,  C21D1/26 ,  C21D1/30 ,  C21D6/00 ,  C21D8/12 ,  C21D9/46 ,  C21D9/52 ,  C22C33/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/16 ,  C22C45/00 ,  C22C45/02 ,  C22C45/04 ,  H01F1/153 ,  B22F9/02 ,  B22F9/04 ,  C22C38/40 ,  C22C38/52

Abstract: A soft magnetic alloy has a main component of Fe. The soft magnetic alloy contains P. A Fe-rich phase and a Fe-poor phase are contained. An average concentration of P in the Fe-poor phase is 1.5 times or larger than an average concentration of P in the soft magnetic alloy by number of atoms.

公开(公告)号：US12123079B2

公开(公告)日：2024-10-22

申请号：US17052076

申请日：2019-05-03

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： Elodie Vasquez ,  Pierre-François Giroux ,  Fernando Lomello ,  Hicham Maskrot ,  Yann Leconte ,  Frédéric Schuster ,  Khalil Abdelkebir

IPC: C22C32/00 ,  B22F1/065 ,  B22F9/14 ,  C22C1/04 ,  C22C1/10 ,  C22C19/00 ,  C22C21/08 ,  C22C33/02 ,  C22C38/06 ,  C22C38/18

CPC classification number: C22C32/0026 ,  B22F1/065 ,  B22F9/14 ,  C22C1/0416 ,  C22C1/0433 ,  C22C1/1084 ,  C22C19/007 ,  C22C21/08 ,  C22C33/02 ,  C22C33/0261 ,  C22C38/06 ,  C22C38/18 ,  B22F2202/13 ,  C22C2200/00

Abstract: A method for producing a reinforced alloy powder containing a metal matrix in which crystalline oxide particles are dispersed, including: (i) providing a powder mixture including a parent metal powder including a master alloy for forming the metal matrix and an additional powder including an intermediate; (ii) milling the powder mixture by a mechanical synthesis process to make a precursor powder; and (iii) subjecting the precursor powder to a thermal plasma generated by a plasma torch including a plasma gas. The master alloy is iron-based, nickel-based, or aluminum-based. The intermediate is at least one of YFe3, Y2O3, Fe2O3, Fe2Ti, FeCrWTi, TiH2, TiO2, Al2O3, HfO2, SiO2, ZrO2, ThO2, and MgO. In (iii), the precursor powder is injected into the plasma torch at a flow rate of 10-30 g/min, a power of the plasma torch is 20-40 kW, and a pressure in a reaction chamber of the plasma torch is 25-100 kPa.

公开(公告)号：US20240274333A1

公开(公告)日：2024-08-15

申请号：US18568831

申请日：2022-06-13

Applicant: YANTAI ZHENGHAI MAGNETIC MATERIAL CO., LTD. ,  NANTONG ZHENGHAI MAGNET CO., LTD.

Inventor： Bingqiang SHI ,  Zhongxin AN ,  Chubo DENG ,  Lei LIU ,  Yanmei JIN

IPC: 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 classification number: 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

Abstract: 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.

公开(公告)号：US20240218489A1

公开(公告)日：2024-07-04

申请号：US18550114

申请日：2022-03-11

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Xiaochun LI ,  Shiqi ZHENG

IPC: C22C33/02

CPC classification number: C22C33/0261

Abstract: Provided herein is a method of producing an oxide-dispersion strengthened (ODS) alloy that includes providing a master alloy powder comprising a metal or metal alloy and particles of a metal oxide; adding the master alloy powder to a molten diluent alloy to form an oxide-dispersion strengthened (ODS) alloy; and allowing the ODS to solidify. The molten diluent alloy includes a molten metal or metal alloy, and a wetting-enhancing metal is added to the molten diluent alloy either prior to, during, or after adding of the master alloy to the molten diluent alloy. The wetting-enhancing alloy reduces an interfacial energy and vdW attraction between the particles of the metal oxide and the molten alloy diluent to achieve a stable nanoparticulate ODS solid.

公开(公告)号：US20240200178A1

公开(公告)日：2024-06-20

申请号：US18587723

申请日：2024-02-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaoming XU ,  Ming CAI ,  Longyu LI

IPC: C22C38/52 ,  C22C33/02 ,  C22C38/44 ,  C22C38/48

CPC classification number: C22C38/52 ,  C22C33/0207 ,  C22C38/44 ,  C22C38/48

Abstract: The present disclosure relates to a steel, a steel structural part, an electronic device, and a steel structural part preparation method. An example steel includes Fe with a weight percentage of ≥60.67 wt %, Cr with a weight percentage of 8.01 wt % to 8.99 wt %, Ni with a weight percentage of 6 wt % to 7 wt %, Co with a weight percentage of 15.01 wt % to 15.99 wt %, Mo with a weight percentage of 5.5 wt % to 6.5 wt %, Nb with a weight percentage of ≤0.5 wt %, O with a weight percentage of ≤0.3 wt %, and C with a weight percentage of ≤0.05 wt %.

公开(公告)号：US20240191332A1

公开(公告)日：2024-06-13

申请号：US18279539

申请日：2022-12-09

Applicant: TPR Co., Ltd.

Inventor： Koki Maeda ,  Fukutoshi Uchida

IPC: C22C38/58 ,  B22F3/00 ,  B22F3/16 ,  B22F3/26 ,  C22C33/02 ,  C22C38/00 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/52 ,  F01L3/02

CPC classification number: C22C38/58 ,  B22F3/004 ,  B22F3/16 ,  B22F3/26 ,  C22C33/0242 ,  C22C33/0285 ,  C22C38/002 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/52 ,  F01L3/02 ,  B22F2301/35 ,  B22F2998/10 ,  B22F2999/00

Abstract: The present invention solves a novel problem of corrosive wear that occurs in the use of a valve seat in an internal combustion engine using a hydrogen gas fuel. The problem is solved by an iron-based sintered alloy valve seat used in an internal combustion engine using a hydrogen gas fuel, in which the Cr content is 6% by mass to 23% by mass, the Mo content is 5% by mass to 20% by mass, the Cu content is 10% by mass to 23% by mass, the Co content is 3% by mass or more, and a total content of Cr, Mo, and Co is 14% by mass to 47% by mass.

公开(公告)号：US11992877B2

公开(公告)日：2024-05-28

申请号：US18128657

申请日：2023-03-30

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masaki Shinkawa ,  Kazuo Kikawa

IPC: B22F1/12 ,  B22F1/05 ,  B22F9/08 ,  B22F10/28 ,  B33Y10/00 ,  B33Y70/10 ,  C22C33/02 ,  C22C38/04

CPC classification number: B22F1/12 ,  B22F1/05 ,  B22F9/082 ,  B22F10/28 ,  B33Y10/00 ,  B33Y70/10 ,  C22C33/0228 ,  C22C38/04 ,  B22F2301/35 ,  B22F2302/20 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2999/00

Abstract: A powder metal material for additive manufacturing contains: (A) a non-magnetic steel powder which is free of nitrogen; and (B) at least one powder selected from a chromium nitride powder and a ferrochromium nitride powder, a particle size of the component (B) is 10.0 μm≤D50≤25.0 μm in terms of volume average particle size, and a content of the component (B) is 0.1 mass % to 3.5 mass % with respect to a total amount of the powder metal material.

公开(公告)号：US20240117478A1

公开(公告)日：2024-04-11

申请号：US18541524

申请日：2023-12-15

Applicant: Höganäs AB (Publ)

Inventor： Sunil Badwe

IPC: C22C38/44 ,  B22F9/08 ,  C22C33/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/34 ,  C22C38/42

CPC classification number: C22C38/44 ,  B22F9/082 ,  C22C33/0271 ,  C22C33/0285 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/34 ,  C22C38/42 ,  B22F2009/0828 ,  B22F2301/058 ,  B22F2301/10 ,  B22F2301/15 ,  B22F2304/10

Abstract: A method for producing a stainless steel powder by water atomization including the steps of providing a molten metal of having a chemical composition, subjecting a stream of the molten metal to water atomization, recovering the obtained stainless steel powder. A sintered duplex stainless steel, wherein the steel has a composition, wherein the microstructure of the sintered duplex stainless steel is characterized by austenite phase precipitated in ferrite phase.

公开(公告)号：US20240102139A1

公开(公告)日：2024-03-28

申请号：US18035045

申请日：2021-11-04

Applicant: UDDEHOLMS AB

Inventor： Sebastian EJNERMARK

IPC: C22C38/44 ,  C22C33/02 ,  C22C38/02 ,  C22C38/52

CPC classification number: C22C38/44 ,  C22C33/0207 ,  C22C33/0257 ,  C22C38/02 ,  C22C38/52

Abstract: A maraging steel suitable for hot-work tools. The steel consists of in weight % (wt.%): C