公开(公告)号：US11801553B1

公开(公告)日：2023-10-31

申请号：US18071476

申请日：2022-11-29

Applicant: KING FAISAL UNIVERSITY

Inventor： Osama Saber Yehya Mohamed ,  Mostafa Osama Saber ,  Aya Osama Saber ,  Doaa Osama Saber

IPC: B22F1/02 ,  B22F1/054 ,  B22F1/06 ,  B22F9/30 ,  B82Y40/00

CPC classification number: B22F1/054 ,  B22F1/06 ,  B22F9/30 ,  B22F2201/11 ,  B22F2202/03 ,  B22F2203/11 ,  B22F2203/13 ,  B22F2301/10 ,  B22F2302/40 ,  B22F2303/01 ,  B22F2304/05 ,  B22F2998/10 ,  B82Y40/00

Abstract: The method for making carbon-coated copper nanoparticles is a simple, one-step for coating copper nanoparticles with a carbon shell to prevent rapid oxidation of the carbon nanoparticle core. The method involves heating or autoclaving thin sheets of copper hydroxide nitrate (Cu2(OH)3NO3) under supercritical conditions (a temperature of 300° C. and a pressure of 120 bar) for two hours. The autoclaving may be performed in the presence of an inert gas, such as argon, which may be used to remove any remaining gases, and the pressure may be released in the presence of the inert gas so that the product may be collected in the presence of air.

公开(公告)号：US11793077B2

公开(公告)日：2023-10-17

申请号：US17422953

申请日：2020-01-15

Applicant: TOSOH CORPORATION

Inventor： Yoichiro Koda ,  Ryo Akiike ,  Hideto Kuramochi

IPC: C22C28/00 ,  H10N10/855 ,  C22C1/04 ,  B22F3/14

CPC classification number: H10N10/855 ,  C22C1/04 ,  C22C28/00 ,  B22F3/14 ,  B22F2201/02 ,  B22F2201/11

Abstract: Provided is a silicide-based alloy material with which environmental load can be reduced and high thermoelectric conversion performance can be obtained.
Provided is a silicide-based alloy material including silicon and ruthenium as main components, in which when the contents of silicon and ruthenium are denoted by Si and Ru, respectively, the atomic ratio of the devices constituting the alloy material satisfies the following:

45 atm %≤Si/(Ru+Si)≤70 atm %

30 atm %≤Ru/(Ru+Si)≤55 atm %.

公开(公告)号：US11685120B2

公开(公告)日：2023-06-27

申请号：US17528734

申请日：2021-11-17

Applicant: General Electric Company

Inventor： Christian Thomas Wakelam ,  Rene du Cauze de Nazelle ,  Mohammed Mounir Shalaby ,  Kishore Ramakrishnan ,  Jens Stammberger

IPC: B29C64/371 ,  B29C64/153 ,  B29C64/245 ,  B05B7/08 ,  B05B12/00 ,  B05B12/08 ,  B22F12/70 ,  B22F12/90 ,  B22F10/322 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B22F10/28 ,  B22F10/77 ,  B22F12/43

CPC classification number: B29C64/371 ,  B05B7/08 ,  B05B12/006 ,  B05B12/087 ,  B22F10/322 ,  B22F12/70 ,  B22F12/90 ,  B29C64/153 ,  B29C64/245 ,  B22F10/28 ,  B22F10/77 ,  B22F12/43 ,  B22F2201/11 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

Abstract: An additive manufacturing (AM) system includes a housing defining a chamber, a build platform disposed in the chamber at a first elevation, and a lower gas inlet disposed at a second elevation and configured to supply a lower gas flow. The AM system includes a contoured surface extending between the lower gas inlet and the build platform to direct the lower gas flow from the second elevation at the lower gas inlet to the first elevation at the build platform, where the contoured surface discharges the lower gas flow in a direction substantially parallel to the build platform. The AM system also includes one or more gas delivery devices coupled to the lower gas inlet to regulate one or more flow characteristics of the lower gas flow, and a gas outlet configured to discharge the lower gas flow.

公开(公告)号：US11673196B2

公开(公告)日：2023-06-13

申请号：US16793897

申请日：2020-02-18

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Lin Zhang ,  Xuanhui Qu ,  Xingyu Li ,  Mingli Qin ,  Yanhao Dong ,  Ju Li ,  Guanghua Wang ,  Ying Long ,  Wei Zhong

IPC: B22F3/16 ,  B22F9/02 ,  B22F1/05 ,  B22F1/10 ,  B22F1/065 ,  B22F1/142 ,  B22F9/04

CPC classification number: B22F3/16 ,  B22F1/05 ,  B22F1/065 ,  B22F1/10 ,  B22F1/142 ,  B22F9/026 ,  B22F2009/041 ,  B22F2201/013 ,  B22F2201/11 ,  B22F2203/11 ,  B22F2203/13 ,  B22F2301/20 ,  B22F2998/10

Abstract: A method to achieve full densification and grain size control for sintering metal materials, wherein raw material powder is deagglomerated to obtain deagglomerated powder with dispersion. The deagglomerated powder is granulated by spray granulation. The granulated particles are processed by high-pressure die pressing and cold isostatic pressing. The powder compact is sintered by two-step pressureless sintering. The first step is to heat up the powder compact to a higher temperature and hold for a short time to obtain 75-85% theoretical density; the second step is to cool down powder compact to a lower temperature and hold for a long time. The two-step sintering can decrease the sintering temperature, so that the powder compact can be densified at a lower temperature. Thus, the obtained refractory metal product is densified, with ultrafine grains, uniform grain size distribution, and outstanding mechanical properties.

公开(公告)号：US11673193B2

公开(公告)日：2023-06-13

申请号：US16675642

申请日：2019-11-06

Applicant: The Boeing Company

Inventor： Daniel Elliott Sievers ,  Eric Erwin Thomas

IPC: B22F5/08 ,  B22F10/00 ,  B22F10/25 ,  B22F10/28 ,  B22F12/41 ,  B22F10/32 ,  B22F10/36 ,  B22F10/64 ,  B33Y10/00 ,  B33Y80/00 ,  B22F12/53 ,  B22F10/38

CPC classification number: B22F5/08 ,  B22F10/00 ,  B22F10/25 ,  B22F10/28 ,  B22F10/32 ,  B22F10/36 ,  B22F10/64 ,  B22F12/41 ,  B22F10/38 ,  B22F12/53 ,  B22F2201/11 ,  B22F2301/205 ,  B22F2301/35 ,  B33Y10/00 ,  B33Y80/00

Abstract: A process for additive manufacture of an article including conjoined first and second metals, wherein the first metal includes one of steel and titanium and the second metal includes another of the steel and the titanium. The process comprises arranging an interface layer of a third metal on a substrate of the first metal, wherein the third metal is capable of forming an alloy with the first metal and capable of forming an alloy with the second metal. The process further comprises supplying a consumable form of the second metal to a locus of the interface layer and heating the locus of the interface layer in an non-reactive environment. In this process, the heating fuses the consumable form of the second metal to render a fused form of the second metal and joins the fused form of the second metal to the interface layer.

公开(公告)号：US20180186074A1

公开(公告)日：2018-07-05

申请号：US15845027

申请日：2017-12-18

Applicant: 3D Systems, Inc.

Inventor： Charles W. Hull

IPC: B29C64/277 ,  B29C64/268 ,  B29C64/393 ,  B29C64/153

CPC classification number: B29C64/277 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2999/00 ,  B29C64/153 ,  B29C64/268 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  G01N2203/0641 ,  G01N2203/0652 ,  G05B2219/37573 ,  G05B2219/49023 ,  Y02P10/295 ,  B22F2203/11 ,  B22F2201/11

Abstract: Methods and apparatus are provided for controlling the temperature of powders in a powder-based additive manufacturing system using spatial light modulation. Powder layer temperatures can be measured and selectively controlled using a radiation source comprising a spatial light modulator. The spatial light modulator applies a visible light radiation and/or IR radiation. In addition to controlling the pre-fused temperature of the powder in the image plane, the spatial light modulator can also apply the radiation to fuse the powder.

公开(公告)号：US20180133967A1

公开(公告)日：2018-05-17

申请号：US15811452

申请日：2017-11-13

Applicant: CL SCHUTZRECHTSVERWALTUNGS GMBH

Inventor： Florian BECHMANN ,  Tobias Dressel ,  Viktor Engel ,  Christian Diller

IPC: B29C64/371 ,  B29C64/153 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y10/00

CPC classification number: B29C64/371 ,  B22F2003/1056 ,  B22F2201/11 ,  B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

Abstract: An apparatus (1) for additive manufacturing of three-dimensional objects (2) by successive, selective layer-by-layer exposure and thus successive, selective layer-by-layer solidification of construction material layers of construction material (3) that can be solidified by means of an energy beam in a process chamber (7) of the apparatus with a defined process chamber height (H), comprising a flow device (8) provided for generating an, especially inert, gas flow (11) flowing through the process chamber (7) between an inflow section (9) and an outflow section (10), wherein the gas flow (11) flows through the process chamber (7) across the entire process chamber height (H), wherein the gas flow (11) is subdivided into several partial gas flows (11a-11c) flowing through the process chamber (7) parallel on top of each other, which differ in at least one flow parameter affecting the flow characteristics of the respective partial gas flows (11a-11c).

公开(公告)号：US20180079029A1

公开(公告)日：2018-03-22

申请号：US15810621

申请日：2017-11-13

Applicant: RENISHAW PLC

Inventor： Simon Peter SCOTT ,  Chris SUTCLIFFE

IPC: B23K26/046 ,  B23K26/082 ,  B23K26/70 ,  B23K26/12 ,  B23K26/34 ,  B23K35/02 ,  B23K26/04 ,  B22F3/00 ,  B22F3/105

CPC classification number: B23K26/046 ,  B22F3/003 ,  B22F2003/1056 ,  B22F2998/00 ,  B23K26/04 ,  B23K26/082 ,  B23K26/12 ,  B23K26/127 ,  B23K26/34 ,  B23K26/703 ,  B23K35/0244 ,  B29C64/20 ,  B33Y30/00 ,  Y02P10/295 ,  B22F3/1055 ,  B22F2201/11 ,  B22F2201/12

Abstract: An additive manufacturing apparatus comprises a processing chamber defining a window for receiving a laser beam and an optical module. The optical module is removably-mountable to the processing chamber for delivering the laser beam through the window. The optical module contains optical components for focusing and steering the laser beam and a controlled atmosphere can be maintained within the module.

公开(公告)号：US20180025820A1

公开(公告)日：2018-01-25

申请号：US15656284

申请日：2017-07-21

Applicant: TDK Corporation

Inventor： Ayato KAKOKI ,  Makoto IWASAKI ,  Tetsuya HIDAKA ,  Takuma HAYAKAWA

IPC: H01F1/057 ,  B22F3/16 ,  B22F9/04 ,  C22C30/02 ,  C22C28/00

CPC classification number: H01F1/0577 ,  B22F3/16 ,  B22F9/04 ,  B22F2009/044 ,  B22F2201/11 ,  B22F2202/05 ,  B22F2301/45 ,  B22F2998/10 ,  B22F2999/00 ,  C22C28/00 ,  C22C30/02 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F41/0293 ,  B22F9/023 ,  B22F1/0059 ,  B22F3/087 ,  B22F3/14 ,  B22F2003/248

Abstract: An R-T-B based sintered magnet containing a first heavy rare earth element, in which R includes Nd, T includes Co and Fe, the first heavy rare earth element includes Tb or Dy, the R-T-B based sintered magnet has a region in which a concentration of the first heavy rare earth element decreases from the surface toward the inside, a first grain boundary phase which contains the first heavy rare earth element and Nd but does not contain Co is present in one cross section including the region, and an area occupied by the first grain boundary phase in one cross section including the region is 1.8% or less.

公开(公告)号：US20180001385A1

公开(公告)日：2018-01-04

申请号：US15546359

申请日：2016-01-22

Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA

Inventor： Jian-Ping WANG ,  YanFeng JIANG

IPC: B22F9/04 ,  C23C8/26 ,  H01F1/06 ,  H01F41/02 ,  B22F1/00 ,  H01F1/08 ,  C22C33/02

CPC classification number: B22F9/04 ,  B22F1/0018 ,  B22F2001/0033 ,  B22F2009/045 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/02 ,  C23C8/26 ,  H01F1/065 ,  H01F1/083 ,  H01F1/086 ,  H01F41/0266 ,  B22F1/0088 ,  B22F2009/042 ,  B22F2201/02 ,  B22F2201/016 ,  B22F2201/11 ,  B22F2201/50 ,  B22F2202/03 ,  B22F2202/05 ,  B22F9/20

Abstract: Techniques are disclosed for milling an iron-containing raw material in the presence of a nitrogen source to generate anisotropically shaped particles that include iron nitride and have an aspect ratio of at least 1.4. Techniques for nitridizing an anisotropic particle including iron, and annealing an anisotropic particle including iron nitride to form at least one a″-Fe16N2 phase domain within the anisotropic particle including iron nitride also are disclosed. In addition, techniques for aligning and joining anisotropic particles to form a bulk material including iron nitride, such as a bulk permanent magnet including at least one a″-Fe16N2 phase domain, are described. Milling apparatuses utilizing elongated bars, an electric field, and a magnetic field also are disclosed.