公开(公告)号：US10774670B2

公开(公告)日：2020-09-15

申请号：US15974821

申请日：2018-05-09

Applicant: General Electric Company

Inventor： Paul Mathew ,  Mohandas Nayak ,  Krishnendu Saha ,  Deoras Prabhudharwadkar

IPC: B22F7/08 ,  F01D11/12 ,  F01D11/00 ,  B22F1/00

Abstract: A filled abradable seal component, an associated method of manufacturing, and a turbomachine including the filled abradable seal component are disclosed. The method includes positioning the abradable seal component including a plurality of honeycomb cells, applying a filler material on the abradable seal component to fill the plurality of honeycomb cells, and curing the filler material at a temperature below 250 degrees Celsius to produce the filled abradable seal component. The filler material includes an abradable material, a binder material, and a fluid catalyst. The abradable material includes at least one of nickel chromium aluminum-bentonite, cobalt nickel chromium aluminum yttrium-polyester, cobalt nickel chromium aluminum yttrium-boron nitride, aluminum silicon-bentonite, aluminum bronze-polyester, nickel graphite, or aluminum silicon-boron nitride. The binder material includes at least one of aluminum, nickel-aluminum, aluminum thiophosphate, or aluminum thiosulfate. The fluid catalyst includes a solvent having hydroxyl groups.

公开(公告)号：US10008341B2

公开(公告)日：2018-06-26

申请号：US14571739

申请日：2014-12-16

Applicant: General Electric Company

Inventor： Mohandas Nayak ,  Nagaveni Karkada ,  Shalini Thimmegowda ,  Mallikarjuna Heggadadevanapura Thammaiah ,  Janakiraman Narayanan ,  Linda Yvonne Jacobs

IPC: H01H1/02 ,  H01H1/021 ,  H01H1/025 ,  H01H11/04 ,  B22F3/04 ,  B22F3/105 ,  B22F3/14 ,  B22F3/16 ,  B22F7/06 ,  C22C32/00 ,  H01H1/0233 ,  H01H1/0237 ,  B22F3/12 ,  B22F5/00

CPC classification number: H01H1/021 ,  B22F3/04 ,  B22F3/105 ,  B22F3/12 ,  B22F3/14 ,  B22F3/16 ,  B22F5/00 ,  B22F7/06 ,  B22F2999/00 ,  C22C32/0021 ,  C22C32/0047 ,  C22C32/0084 ,  H01H1/0233 ,  H01H1/0237 ,  H01H1/025 ,  H01H11/048 ,  B22F3/10 ,  B22F2201/013 ,  B22F2201/02 ,  B22F2207/01

Abstract: A circuit breaker having a monolithic structure and method of making is disclosed. The monolithic structure includes an arm portion having copper and a contact portion having a composite material. The composite material has a metallic matrix and a second phase disposed in the metallic matrix. The method of making the monolithic structure includes introducing a first powder into a first region of a mold, introducing a second powder into a second region of the mold, and consolidating the first powder and the second powder together. The first region of the mold corresponds to a contact portion, and the second region corresponds to an arm portion of the monolithic structure of the circuit breaker.

公开(公告)号：US09869188B2

公开(公告)日：2018-01-16

申请号：US14568203

申请日：2014-12-12

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Kristen Hall Brosnan ,  Shahana Chatterjee ,  Wayne Charles Hasz ,  Mohandas Nayak ,  Digamber Gurudas Porob ,  Gopi Chandran Ramachandran ,  Larry Steven Rosenzweig ,  Shankar Sivaramakrishnan ,  Alok Mani Srivastava ,  Venkat Subramaniam Venkataramani

IPC: C23C4/12 ,  F01D9/02 ,  F02C7/24 ,  F01D5/28 ,  F02C7/30 ,  B05D3/04 ,  B05D3/02 ,  B05D1/28 ,  B05D7/24 ,  B05D7/14 ,  B05D7/22 ,  B05D1/18 ,  B05D5/00 ,  C23C28/00 ,  C04B41/89 ,  C04B41/00 ,  C04B41/52 ,  C23C18/12

CPC classification number: F01D5/288 ,  B05D1/18 ,  B05D1/28 ,  B05D3/0254 ,  B05D3/0493 ,  B05D5/00 ,  B05D7/14 ,  B05D7/142 ,  B05D7/22 ,  B05D7/24 ,  B05D2401/10 ,  B05D2401/20 ,  C04B41/009 ,  C04B41/52 ,  C04B41/89 ,  C23C18/1216 ,  C23C18/1225 ,  C23C18/1254 ,  C23C28/3215 ,  C23C28/3455 ,  F01D9/02 ,  F02C7/24 ,  F02C7/30 ,  F05D2220/32 ,  F05D2230/30 ,  F05D2230/312 ,  F05D2230/90 ,  F05D2240/12 ,  F05D2240/30 ,  F05D2240/35 ,  F05D2260/95 ,  F05D2300/13 ,  F05D2300/15 ,  F05D2300/20 ,  F05D2300/21 ,  F05D2300/228 ,  F05D2300/30 ,  F05D2300/50 ,  F05D2300/605 ,  F05D2300/606 ,  C04B35/565 ,  C04B35/806 ,  C04B41/5096 ,  C04B41/5071 ,  C04B41/522 ,  C04B41/4582 ,  C04B41/5042 ,  C04B41/4515 ,  C04B41/4535 ,  C04B41/455 ,  C04B41/5031

Abstract: Articles having coatings that are resistant to high temperature degradation are described, along with methods for making such articles. The article comprises a coating disposed on a substrate. The coating comprises a plurality of elongated surface-connected voids. The article further includes a protective agent disposed within at least some of the voids of the coating; the protective agent comprises a substance capable of chemically reacting with liquid nominal CMAS to form a solid crystalline product outside the crystallization field of said nominal CMAS. This solid crystalline product has a melting temperature greater than about 1200 degrees Celsius. The method generally includes disposing the protective agent noted above within the surface connected voids of the coating at an effective concentration to substantially prevent incursion of CMAS materials into the voids in which the protective agent is disposed.

公开(公告)号：US20240287667A1

公开(公告)日：2024-08-29

申请号：US18323495

申请日：2023-05-25

Applicant: General Electric Company

Inventor： Paul Mathew ,  Ravindra Shankar Ganiger ,  Mohandas Nayak ,  Mandyam Rangayan Sridhar ,  Sathisha Chikkabikkodu Hanum ,  Sharad Pundlik Patil ,  Harsha K A

IPC: C23C4/067 ,  F02B3/06

CPC classification number: C23C4/067 ,  F02B3/06

Abstract: A coated component includes a component having a surface, and a solid lubricant wear resistant coating on the surface, wherein the solid lubricant wear resistant coating includes a solid lubricant phase with a negative thermal expansion coefficient material dispersed therein. The component may also include a coating having oleophilic or porous properties disposed on portions thereof, and a coating having oleophobic properties disposed on portions thereof.

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

IPC: C23C4/134 ,  C23C4/11

CPC classification number: C23C4/134 ,  C23C4/11

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.

公开(公告)号：US20230174788A1

公开(公告)日：2023-06-08

申请号：US17587508

申请日：2022-01-28

Applicant: General Electric Company

Inventor： Reza Sarrafi-Nour ,  Vidya Ramaswamy ,  Adarsh Shukla ,  Mohandas Nayak ,  Geoffrey Mark Eadon

IPC: C09D1/00 ,  F01D5/28

CPC classification number: C09D1/00 ,  F01D5/288

Abstract: An coated component is provided. The coated component includes a component substrate and bond coat layer comprising silicon deposited on the component substrate. A composite layer is deposited on the bond coat layer. The composite layer includes a rare earth disilicate and a second phase material. The composite layer has a thickness (T) from about 0.05 mm to about 2.25 mm, and a coefficient of thermal expansion that is different by a value of about 0 to about 2.25 from a coefficient of thermal expansion of the component substrate upon which the bond coat layer is deposited. Coated gas turbine engine components are also provided.

公开(公告)号：US20220290285A1

公开(公告)日：2022-09-15

申请号：US17231172

申请日：2021-04-15

Applicant: General Electric Company

Inventor： Surinder Singh Pabla ,  Eklavya Calla ,  Mohandas Nayak ,  Arundhati Sengupta ,  Adarsh Shukla ,  Jon Conrad Schaeffer ,  Krishnamurthy Anand

IPC: C23C4/11 ,  C23C4/134

Abstract: A high entropy ceramic (HEC) composition includes at least three different rare earth (RE) oxides and at least one of hafnium dioxide (HfO2) and zirconia oxide (ZrO2). The at least three different rare earth oxides being equimolar fractions. In one aspect, the high entropy ceramic (HEC) composition can be used in a thermal barrier coating.

公开(公告)号：US20190372441A1

公开(公告)日：2019-12-05

申请号：US15993263

申请日：2018-05-30

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Weijun Yin ,  Anil Raj Duggal ,  Aharon Yakimov ,  Holly Ann Comanzo ,  Vijay Kumar Srivastava ,  Mohandas Nayak ,  Hao Huang ,  Oltea Puica Siclovan ,  Paul Michael Smigelski, JR.

IPC: H02K15/10 ,  H02K3/30 ,  H02K3/34 ,  C25D13/02 ,  C25D13/12

Abstract: A method of forming a coating on a component of an electrical machine is presented. The method includes coating a surface of the component with a ceramic material, via an electrophoretic process, to form a first coating. The method further includes contacting the first coating deposited by the electrophoretic process with a polymeric material to form a second coating. The method furthermore includes curing or melting the polymeric material in the second coating to form the coating including the ceramic material dispersed in a polymer matrix.

公开(公告)号：US20160177746A1

公开(公告)日：2016-06-23

申请号：US14576760

申请日：2014-12-19

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Venkat Subramaniam Venkataramani ,  Shahana Chatterjee ,  Mohandas Nayak ,  Shankar Sivaramakrishnan

IPC: F01D5/28 ,  C01G25/00 ,  C01G35/00

CPC classification number: F01D5/288 ,  C01G25/00 ,  C01G33/00 ,  C01G35/00 ,  C01P2002/34 ,  F05D2300/2112 ,  Y02T50/672

Abstract: Articles, such as components for high temperature turbomachinery components, include one or more coatings bearing certain perovskite compositions resistant to incursion by liquid calcium-magnesium-aluminum-silicon-oxide (CMAS) materials during service. The CMAS-reactive material includes a perovskite-structured oxide, which comprises a) a rare earth element, b) niobium, tantalum or a combination of tantalum and niobium, and c) oxygen. The CMAS-reactive material is present in an effective amount to react with a CMAS composition at an operating temperature, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition.

Abstract translation: 诸如用于高温涡轮机组件的部件的制品包括一种或多种在使用期间承载某种钙钛矿组合物以耐受液态钙镁 - 铝 - 氧化硅（CMAS）材料侵入的涂层。 CMAS反应性材料包括钙钛矿结构氧化物，其包括a）稀土元素，b）铌，钽或钽和铌的组合，以及c）氧。 CMAS反应性材料以有效量存在，以在操作温度下与CMAS组合物反应，从而形成具有比CMAS组合物的熔融温度和粘度更大的熔融温度和粘度中的一个或两个的反应产物。

公开(公告)号：US08773235B2

公开(公告)日：2014-07-08

申请号：US13677905

申请日：2012-11-15

Applicant: General Electric Company

Inventor： Adnan Kutubuddin Bohori ,  Mohandas Nayak ,  Sundeep Kumar ,  Padmaja Parakala ,  Sudhakar Eddula Reddy

IPC: H01C10/36 ,  H01C13/02 ,  H01C7/18 ,  H01H15/04 ,  H01H9/42 ,  H01H13/78

CPC classification number: H01C13/02 ,  H01C7/18 ,  H01C10/36 ,  H01C10/38 ,  H01H9/42 ,  H01H13/78 ,  H01H15/04

Abstract: An electrical switch and a circuit breaker are presented herein. The electrical switch includes a graded resistance block comprising a first end having a first electrical resistivity and a second end having an electrical resistivity greater than the first electrical resistivity. The electrical switch further includes a fixed contact electrically coupled to the first end of the graded resistance block, and a sliding contact configured to slide over the graded resistance block. In addition to the components of the electrical switch, the circuit breaker also includes a forcing mechanism to slide the sliding contact over the graded resistance block from the first end to the second end.

Abstract translation: 本文给出了电开关和断路器。 电开关包括渐变电阻块，其包括具有第一电阻率的第一端和具有大于第一电阻率的电阻率的第二端。 电开关还包括电连接到渐变电阻块的第一端的固定触点和被配置为在渐变电阻块上滑动的滑动触点。 除了电气开关的部件之外，断路器还包括用于将渐变电阻块上的滑动触点从第一端滑动到第二端的强制机构。