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公开(公告)号：US11655720B2
公开(公告)日：2023-05-23
申请号：US17313538
申请日：2021-05-06
Applicant: General Electric Company
Inventor： Hrishikesh Keshavan , Atanu Saha , Margeaux Wallace , Mamatha Nagesh , Ambarish Jayant Kulkarni , Bernard Patrick Bewlay, Jr.
CPC classification number: F01D5/288 , B05D5/005 , B05D7/24 , F01D5/005 , F05D2220/32 , F05D2230/31 , F05D2230/80 , F05D2230/90 , F05D2240/35 , F05D2260/231 , F05D2300/611 , F05D2300/701
Abstract: A sprayable thermal barrier coating powder mixture for a gas turbine engine includes: a dry composition having a low surface area ceramic powder having a median particle size distribution greater than 5 microns and less than 50 microns, and a high surface area ceramic powder having a median particle size distribution smaller than 5 microns, wherein the low surface area ceramic powder makes up at least 50% by weight of the dry composition of the sprayable thermal barrier coating powder mixture.
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公开(公告)号：US11549382B2
公开(公告)日：2023-01-10
申请号：US17089331
申请日：2020-11-04
Applicant: General Electric Company
Inventor： Hrishikesh Keshavan , Ambarish Jayant Kulkarni , Margeaux Wallace , Byron Andrew Pritchard, Jr. , Almed M. Elkady , Atanu Saha , Mamatha Nagesh , Bernard Patrick Bewlay
Abstract: A coated component of a gas turbine engine includes a substrate defining a surface, a thermal barrier coating deposited on the surface of the substrate, a region of the component where the thermal barrier coating has spalled from the substrate, a layer of environmental contaminant compositions formed on one or more of the thermal barrier coating or the region of the component where the thermal barrier coating has spalled from the substrate in response to an initial exposure of the component to high operating temperatures of the gas turbine engine, and a thermal barrier coating (TBC) restoration coating deposited at least on the region of the component where there thermal barrier coating has spalled from the substrate.
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3.发明公开公开(公告)号：US20240150251A1
公开(公告)日：2024-05-09
申请号：US17979866
申请日：2022-11-03
Applicant: General Electric Company
Inventor： Atanu Saha , Don Mark Lipkin , Sreerama Prasad R , Mamatha Nagesh , Nicholas Edward Antolino
CPC classification number: C04B41/522 , C04B41/0072 , C04B41/009 , C04B41/4539 , C04B41/5024 , C04B41/5096 , C04B41/87 , C04B41/89
Abstract: Methods for repairing a defect in a multilayered coating on a silicon-containing substrate are provided, along with the resulting compared component. The method includes: applying a first patch slurry into the defect; drying the first patch slurry to form a dried first patch layer; applying a second patch slurry into the defect and on the dried first patch layer; and drying the second patch slurry to form a second dried patch layer.
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公开(公告)号：US20240117481A1
公开(公告)日：2024-04-11
申请号：US17962692
申请日：2022-10-10
Applicant: General Electric Company
Inventor： Margeaux Wallace , Mamatha Nagesh , Mohandas Nayak , Sundeep Kumar , Bernard Patrick Bewlay , Julie Marie Kuhn
Abstract: Methods are provided for forming a thermal barrier coating having a non-linear compositional gradient and/or a non-linear porosity gradient, along with coated components formed therefrom. The method includes spraying a deposition mixture of a first composition and a second composition via a solution precursor plasma spray apparatus onto a surface of a substrate; while spraying the deposition mixture, adjusting at least one deposition parameter such that the thermal barrier coating is formed with the non-linear gradient.
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5.发明申请公开(公告)号：US20220169551A1
公开(公告)日：2022-06-02
申请号：US17108657
申请日：2020-12-01
Applicant: General Electric Company
Inventor： Atanu Saha , Manepalli Satya Kishore , Nicholas Edward Antolino , Don Mark Lipkin , Mamatha Nagesh
Abstract: Methods for forming a sintered patch on a silicon-based substrate are disclosed. The methods include applying a patch slurry on the silicon-based substrate, drying the patch slurry on the silicon-based substrate to form a dried patch material, and sintering the dried patch material in an oxidizing atmosphere to form a sintered patch on the silicon-based substrate. The patch slurry includes a patch material containing silicates in a fluid carrier.
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Patent Agency Ranking
公开(公告)号：US20240084703A1
公开(公告)日：2024-03-14
申请号：US18239532
申请日：2023-08-29
Applicant: General Electric Company
Inventor： Atanu Saha , Hrishikesh Keshavan , Mamatha Nagesh , Ambarish J. Kulkarni , Bernard P. Bewlay
CPC classification number: F01D5/005 , F01D5/288 , F05D2230/80 , F05D2300/2118 , F05D2300/611
Abstract: Methods for repairing a thermal barrier coating deposited on a component with localized spallation of the thermal barrier coating includes depositing a primer slurry on a thermally grown oxide of the component exposed by the localized spallation, depositing a ceramic slurry on the primer slurry, and heating the primer slurry and the ceramic slurry. The primer slurry includes a primer that includes at least one of a metal and a metal oxide. The ceramic slurry includes a ceramic material, a ceramic slurry binder material, and a ceramic slurry fluid carrier. Heating the primer slurry and the ceramic slurry forms a first chemical bond between the primer and the thermally grown oxide and a second chemical bond between the primer and the ceramic material.
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公开(公告)号：US20210131305A1
公开(公告)日：2021-05-06
申请号：US17089331
申请日：2020-11-04
Applicant: General Electric Company
Inventor： Hrishikesh Keshavan , Ambarish Jayant Kulkarni , Margeaux Wallace , Byron Andrew Pritchard, JR. , Almed M. Elkady , Atanu Saha , Mamatha Nagesh , Bernard Patrick Bewlay
Abstract: A coated component of a gas turbine engine includes a substrate defining a surface, a thermal barrier coating deposited on the surface of the substrate, a region of the component where the thermal barrier coating has spalled from the substrate, a layer of environmental contaminant compositions formed on one or more of the thermal barrier coating or the region of the component where the thermal barrier coating has spalled from the substrate in response to an initial exposure of the component to high operating temperatures of the gas turbine engine, and a thermal barrier coating (TBC) restoration coating deposited at least on the region of the component where there thermal barrier coating has spalled from the substrate.
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公开(公告)号：US20160161156A1
公开(公告)日：2016-06-09
申请号：US14904961
申请日：2014-07-24
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Mamatha Nagesh , Atanu Saha , Francis Johnson
IPC: F25B21/00
CPC classification number: F25B21/00 , F25B2321/002 , F25B2321/0023 , Y02B30/66
Abstract: A magneto-caloric assembly is provided. The assembly includes a first region comprising a first magneto-caloric material, a second region disposed on the first region and comprising a second magneto-caloric material and a first matrix material, and a third region disposed on the second region and comprising a thermally conductive material.
Abstract translation: 提供了磁热组件。 该组件包括第一区域，该第一区域包括第一磁热量材料，第二区域，设置在第一区域上，并且包括第二磁热量材料和第一基质材料，第三区域设置在第二区域上，并且包括导热 材料。
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公开(公告)号：US20210396181A1
公开(公告)日：2021-12-23
申请号：US17313538
申请日：2021-05-06
Applicant: General Electric Company
Inventor： Hrishikesh Keshavan , Atanu Saha , Margeaux Wallace , Mamatha Nagesh , Ambarish Jayant Kulkarni , Bernard Patrick Bewlay, JR.
Abstract: A sprayable thermal barrier coating powder mixture for a gas turbine engine includes: a dry composition having a low surface area ceramic powder having a median particle size distribution greater than 5 microns and less than 50 microns, and a high surface area ceramic powder having a median particle size distribution smaller than 5 microns, wherein the low surface area ceramic powder makes up at least 50% by weight of the dry composition of the sprayable thermal barrier coating powder mixture.
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公开(公告)号：US10981196B2
公开(公告)日：2021-04-20
申请号：US15533829
申请日：2015-12-01
Applicant: General Electric Company
Inventor： Atanu Saha , Gopi Chandran Ramachandran , Mamatha Nagesh , Shalini Thimmegowda , Bala Srinivasan Parthasarathy
IPC: B05D7/00 , B05D7/14 , B32B25/20 , C09D183/04 , F04D7/04 , F04D29/40 , B05D1/02 , B05D1/18 , F04D17/00 , B63H5/16 , F04D29/043 , F04D29/053 , F04D29/42 , F04D29/52 , C08G77/12 , C08G77/20
Abstract: A silicone bond coat composition having a viscosity of less than 1,600 centistokes is applied to substantially all external surfaces of the article and then cured. A liquid silicone elastomer outer coat composition comprising a high viscosity first liquid silicone elastomer formulation and a low viscosity second liquid silicone elastomer formulation is then applied and cured to provide a protected article having a complex shape. Optimal coatings result from a careful balancing of component viscosities. In an embodiment, the first formulation has a viscosity greater than 300,000 centistokes, and the second formulation has a viscosity less than 6,000 centistokes, and the liquid silicone elastomer outer coat composition comprises from about 60 to about 40 percent by weight of the first formulation and from about 40 to about 60 percent by weight of the second liquid silicone elastomer formulation.
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