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公开(公告)号：US20190311852A1
公开(公告)日：2019-10-10
申请号：US15949551
申请日：2018-04-10
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Francis Johnson , Mohamed Osama , Anoop Kumar Jassal , Raghavendra Rao Adharapurapu
Abstract: A method of heat-treating an additively-manufactured ferromagnetic component is presented and a related ferromagnetic component is presented. A saturation flux density of a heat-treated ferromagnetic component is greater than a saturation flux density of an as-formed ferromagnetic component. The heat-treated ferromagnetic component is further characterized by a plurality of grains such that at least 25% of the plurality of grains have a median grain size less than 10 microns and 25% of the plurality of grains have a median grain size greater than 25 microns.
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公开(公告)号：US20140157793A1
公开(公告)日：2014-06-12
申请号：US13707756
申请日：2012-12-07
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Francis Johnson , Min Zou , Ming Yin , Raghavendra Rao Adharapurapu , Christopher Klapper , Vijay Kumar Srivastava
CPC classification number: C09K5/00 , C22C45/006 , C22C45/04 , C22F1/16 , F25B21/00 , F25D11/00 , H01F1/015 , Y02B30/66
Abstract: A novel magneto caloric material (MCM) is provided that can be used in, for example, a regenerator of a heat pump, appliance, air conditioning system, and other heating and/or cooling devices. The MCM is a type of Heusler alloy, has an L21 crystal structural prototype, and can undergo a reversible phase transformation between a low temperature, low magnetization Martensite phase and a high temperature, high magnetization Austenite phase to exhibit an inverse magneto caloric effect upon application of a sufficient magnetic field. A process of annealing of the alloy is also provided that can be used to adjust the temperature at which this phase transformation occurs. The present invention includes the alloy as subjected to such annealing.
Abstract translation: 提供了可用于例如热泵，电器，空调系统以及其它加热和/或冷却装置的再生器的新颖的磁热量材料（MCM）。 MCM是一种Heusler合金，具有L21晶体结构原型，并且可以在低温，低磁化马氏体相和高温高磁化奥氏体相之间进行可逆相变，以在应用时呈现逆磁热量效应 的足够的磁场。 还提供了可用于调节发生该相变的温度的合金退火过程。 本发明包括进行这种退火的合金。
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公开(公告)号：US20230398621A1
公开(公告)日：2023-12-14
申请号：US18454365
申请日：2023-08-23
Applicant: General Electric Company
Inventor： Raghavendra Rao Adharapurapu , Michael Francis Xavier Gigliotti, Jr. , David Edwin Budinger , Pazhayannur Ramanathan Subramanian , Jeffrey Jon Schoonover
CPC classification number: B23K1/0018 , B23K35/3033 , C22C45/04 , F01D25/005 , F01D25/24 , F01D5/282 , F01D5/005 , F05D2230/237 , B23K2101/001
Abstract: A nickel-based braze alloy composition is described, including nickel, about 1 weight % to about 5 weight % boron (B); and about 1 weight % to about 20 weight % germanium (Ge). The composition is free of any silicon. Superalloy articles that contains a crack or other type of void or gap filled with the nickel-based braze alloy composition are also described, along with methods for filling such a gap. Related articles of manufacture and brazing processes to join metal components are also disclosed.
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公开(公告)号：US11780020B2
公开(公告)日：2023-10-10
申请号：US18072064
申请日：2022-11-30
Applicant: General Electric Company
Inventor： Voramon Supatarawanich Dheeradhada , Raghavendra Rao Adharapurapu , Juan Borja , Don Mark Lipkin
CPC classification number: B23K1/0006 , B23K35/0244 , B23K35/3033 , B23P6/007 , B23P6/045 , B23K2101/001
Abstract: A method of furnace-less brazing of a substrate is provided. The method includes providing a substrate having a brazing region thereon; disposing braze precursor material containing a nickel powder, an aluminum powder, and a platinum group metal powder on the brazing region; and initiating an exothermic reaction of the braze precursor material such that the exothermic reaction produces a braze material that reaches a braze temperature above the liquidus temperature for the braze material. A braze precursor material is also provided.
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公开(公告)号：US20210197273A1
公开(公告)日：2021-07-01
申请号：US17199793
申请日：2021-03-12
Applicant: General Electric Company
Inventor： Francis Johnson , Mohamed Osama , Anoop Kumar Jassal , Raghavendra Rao Adharapurapu
IPC: B22F10/20 , H01F41/04 , B33Y10/00 , B33Y40/00 , H01F1/20 , B33Y80/00 , B22F3/24 , C21D1/26 , H02K1/02 , H02K15/00 , H02K15/12 , C21D6/00 , C21D9/02 , H02K15/02 , B22F10/00
Abstract: A method of heat-treating an additively-manufactured ferromagnetic component is presented and a related ferromagnetic component is presented. A saturation flux density of a heat-treated ferromagnetic component is greater than a saturation flux density of an as-formed ferromagnetic component. The heat-treated ferromagnetic component is further characterized by a plurality of grains such that at least 25% of the plurality of grains have a median grain size less than 10 microns and 25% of the plurality of grains have a median grain size greater than 25 microns.
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Patent Agency Ranking
公开(公告)号：US09806380B2
公开(公告)日：2017-10-31
申请号：US14321072
申请日：2014-07-01
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Sundeep Kumar , Thomas Martin Angeliu , Mohamed Rahmane , Arunabh Basak , Raghavendra Rao Adharapurapu , Tobias Eicke Juetting
IPC: H01M4/36 , H01M10/39 , H01M10/38 , B23K35/30 , B23K35/00 , B23K35/02 , C04B37/00 , C04B37/02 , H01M2/08 , C22C19/05
CPC classification number: H01M10/399 , B23K35/001 , B23K35/004 , B23K35/0233 , B23K35/0238 , B23K35/3033 , B23K35/304 , C04B37/006 , C04B37/026 , C04B2237/12 , C04B2237/122 , C04B2237/123 , C04B2237/343 , C04B2237/40 , C04B2237/405 , C22C19/05 , C22C19/058 , H01M2/08 , H01M10/38 , Y10T29/4911
Abstract: An electrochemical cell is described, including an anodic chamber and a cathodic chamber separated by an electrolyte separator tube, all contained within a cell case. The cell also includes an electrically insulating ceramic collar positioned at an opening of the cathodic chamber, and defining an aperture in communication with the opening; along with a cathode current collector assembly; and at least one metallic ring that has a coefficient of thermal expansion (CTE) in the range of about 3 to about 7.5 ppm/° C., contacting at least a portion of a metallic component within the cell, and an adjacent ceramic component. An active braze alloy composition attaches and hermetically seals the ring to the metallic component and the collar. Sodium metal halide batteries that contain this type of cell are also described, along with methods for sealing structures within the cell.
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公开(公告)号：US20160354869A1
公开(公告)日：2016-12-08
申请号：US15236979
申请日：2016-08-15
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Sundeep Kumar , Raghavendra Rao Adharapurapu , Mohamed Rahmane
CPC classification number: B23K35/304 , B23K35/001 , B23K35/004 , B23K35/0233 , B23K35/0238 , B23K35/0244 , B23K35/025 , B23K35/3033 , B23K35/327 , B23K2101/18 , B23K2101/36 , B23K2101/38 , B23K2103/16 , B23K2103/18 , B23K2103/26 , B23K2103/52 , C04B37/006 , C04B37/026 , C04B2237/123 , C04B2237/124 , C04B2237/127 , C04B2237/343 , C04B2237/405 , C04B2237/70 , C22C9/06 , C22C19/05 , H01M2/0252 , H01M2/08 , H01M10/02 , H01M10/38 , H01M10/39 , H01M10/3963 , Y10T403/479
Abstract: A braze alloy composition is disclosed, containing nickel, about 5% to about 40% of at least one refractory metal selected from niobium, tantalum, or molybdenum; about 2% to about 32% chromium; and about 0.5% to about 10% of at least one active metal element. An electrochemical cell that includes two components joined to each other by such a braze composition is also described. A method for joining components such as those within an electrochemical cell is also described. The method includes the step of introducing a braze alloy composition between a first component and a second component to be joined, to form a brazing structure. In many instances, one component is formed of a ceramic, while the other is formed of a metal or metal alloy.
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公开(公告)号：US09028997B2
公开(公告)日：2015-05-12
申请号：US13729343
申请日：2012-12-28
Applicant: General Electric Company
Inventor： Michael Colan Moscinski , Reza Sarrafi-Nour , Badri Narayan Ramamurthi , Mohandas Nayak , Darren Michael Stohr , Sundeep Kumar , Mohamed Rahmane , Arunabh Basak , Raghavendra Rao Adharapurapu
CPC classification number: H01M2/08 , H01M10/39 , H01M10/3909 , H01M10/399 , Y10T29/4911
Abstract: The present application provides for ceramic collars and metal rings for active brazing in sodium-based thermal batteries. The ceramic collar may be an alpha-alumina collar configured for active brazing, and thereby sealing, to outer and inner Ni rings for use in NaMx cells. The portions of the alpha-alumina collar active brazed to the outer and inner Ni rings may be outwardly facing and include inwardly extending recesses. The portions of the outer and inner Ni rings active brazed to the outwardly facing portions of the collar may be inwardly facing. The alpha-alumina collar may include a greater coefficient of thermal expansion than each of the outer and inner Ni rings, and the alpha-alumina collar and outer and inner Ni rings may be configured such that a portion of the outer and inner Ni rings is deformed into the inwardly extending recesses of the alpha-alumina collar after active brazing thereof.
Abstract translation: 本申请提供了用于钠基热电池中的活性钎焊的陶瓷套环和金属环。 陶瓷套圈可以是被配置用于主动钎焊，从而密封到用于NaMx电池的外部和内部Ni环的α-氧化铝轴环。 活性钎焊到外部和内部Ni环的α-氧化铝轴环的部分可以是向外的并且包括向内延伸的凹部。 活动钎焊到套环向外面的部分的外部和内部Ni环的部分可以向内。 α-氧化铝轴环可以包括比每个外部和内部Ni环更大的热膨胀系数，并且α-氧化铝轴环和外部和内部Ni环可以被构造成使得外部和内部Ni环的一部分是 在其活性钎焊之后变形成α-氧化铝轴环的向内延伸的凹部。
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公开(公告)号：US11759877B2
公开(公告)日：2023-09-19
申请号：US15389779
申请日：2016-12-23
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Raghavendra Rao Adharapurapu , Michael Francis Xavier Gigliotti, Jr. , David Edwin Budinger , Pazhayannur Ramanathan Subramanian , Jeffrey Jon Schoonover
IPC: C22C45/04 , B23K1/00 , B23K35/30 , F01D25/00 , F01D25/24 , F01D5/28 , F01D5/00 , B23K101/00 , B23K103/08
CPC classification number: B23K1/0018 , B23K35/3033 , C22C45/04 , F01D5/005 , F01D5/282 , F01D25/005 , F01D25/24 , B23K2101/001 , B23K2103/08 , F05D2230/237 , F05D2230/80 , F05D2300/175
Abstract: A nickel-based braze alloy composition includes nickel, about 1 weight % to about 5 weight % boron (B); and about 1 weight % to about 20 weight % germanium (Ge). The composition is free of any silicon. Superalloy articles having a crack or other type of void or gap may be filled with the nickel-based braze alloy composition. Methods for filling such a gap are described.
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公开(公告)号：US11541470B2
公开(公告)日：2023-01-03
申请号：US17221440
申请日：2021-04-02
Applicant: General Electric Company
Inventor： Voramon Supatarawanich Dheeradhada , Raghavendra Rao Adharapurapu , Juan Borja , Don Mark Lipkin
Abstract: A method of furnace-less brazing of a substrate is provided. The method includes providing a substrate having a braze region thereon; disposing braze precursor material containing a nickel powder, an aluminum powder, and a platinum group metal powder on the braze region; and initiating an exothermic reaction of the braze precursor material such that the exothermic reaction produces a braze material that reaches a braze temperature above the solidus temperature of the braze material. A braze precursor material is also provided.
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