公开(公告)号：US20160252019A1

公开(公告)日：2016-09-01

申请号：US15041710

申请日：2016-02-11

Applicant: General Electric Company

Inventor： Narendra Digamber Joshi ,  Krishan Lal Luthra

IPC: F02C9/20

CPC classification number: F02C9/20 ,  F05D2270/11 ,  F05D2270/303

Abstract: A method of operating a gas turbine engine includes measuring an exhaust gas temperature of the gas turbine engine. A first stage turbine nozzle assembly of the gas turbine engine is adjusted to a first position. A firing temperature of the gas turbine engine is determined based on the exhaust gas temperature. The firing temperature is compared to a threshold value and a difference value is determined therefrom. If the difference value exceeds a threshold value, the first stage turbine nozzle assembly is adjusted to a second position such that the firing temperature is substantially equal to the threshold value.

Abstract translation: 一种操作燃气涡轮发动机的方法包括测量燃气涡轮发动机的排气温度。 燃气涡轮发动机的第一级涡轮喷嘴组件被调节到第一位置。 基于排气温度来确定燃气轮机的燃烧温度。 将烧制温度与阈值进行比较，并从其确定差值。 如果差值超过阈值，则将第一级涡轮喷嘴组件调节到第二位置，使得点火温度基本上等于阈值。

公开(公告)号：US12196108B2

公开(公告)日：2025-01-14

申请号：US17994459

申请日：2022-11-28

Applicant: General Electric Company

Inventor： Krishan Lal Luthra ,  Julin Wan ,  Reza Sarrafi-Nour

IPC: F01D5/28 ,  C04B41/00 ,  C04B41/50 ,  C04B41/52 ,  C04B41/85 ,  C04B41/89 ,  C23C4/04

Abstract: An article for high temperature service is presented herein. One embodiment is an article including a substrate having a silicon-bearing ceramic matrix composite; and a layer disposed over the substrate, wherein the layer includes silicon and a dopant, the dopant including aluminum. In another embodiment, the article includes a ceramic matrix composite substrate, wherein the composite includes a silicon-bearing ceramic and a dopant, the dopant including aluminum; a bond coat disposed over the substrate, where the bond coat includes elemental silicon, a silicon alloy, a silicide, or combinations including any of the aforementioned; and a coating disposed over the bond coat, the coating including a silicate (such as an aluminosilicate or rare earth silicate), yttria-stabilized zirconia, or a combination including any of the aforementioned.

公开(公告)号：US11655194B2

公开(公告)日：2023-05-23

申请号：US16655626

申请日：2019-10-17

Applicant: General Electric Company

Inventor： Krishan Lal Luthra ,  Glen Harold Kirby ,  Julin Wan ,  Larry Steven Rosenzweig

IPC: C04B41/00 ,  C04B35/80 ,  C04B41/50 ,  C04B41/52

CPC classification number: C04B41/009 ,  C04B35/80 ,  C04B41/5057 ,  C04B41/5059 ,  C04B41/5071 ,  C04B41/522 ,  C04B2235/3826 ,  C04B2235/5244

Abstract: Coated components, along with methods of their formation, are provided. The coated component includes a ceramic substrate having a surface; an intermediate layer on the surface of the ceramic substrate; and an environmental barrier coating on the intermediate layer. The intermediate layer includes a carbon-sink material that inhibits accumulation of free carbon from a carbon-containing species within the intermediate layer, the ceramic substrate, or both.

公开(公告)号：US20210324201A1

公开(公告)日：2021-10-21

申请号：US16849192

申请日：2020-04-15

Applicant: General Electric Company

Inventor： Vidya Ramaswamy ,  Krishan Lal Luthra ,  Geoffrey Mark Eadon ,  Vijay Kumar Srivastava ,  Nathaniel Patrick Brown ,  Don Mark Lipkin

IPC: C09D1/00 ,  F01D25/00

Abstract: A coated component may have a consumable coating that protects the component from dust. A coated component may include a silicon containing substrate defining a substrate surface, a barrier coating on the substrate surface, with the barrier coating defining a barrier surface, and a consumable coating on the barrier surface. The consumable coating may include a ceramic oxide that includes a silicate. A component, such as a component of a turbomachine, may be protected from dust by applying a consumable coating on the component.

公开(公告)号：US10371064B2

公开(公告)日：2019-08-06

申请号：US15041710

申请日：2016-02-11

Applicant: General Electric Company

Inventor： Narendra Digamber Joshi ,  Krishan Lal Luthra

IPC: F02C9/20

Abstract: A method of operating a gas turbine engine includes measuring an exhaust gas temperature of the gas turbine engine. A first stage turbine nozzle assembly of the gas turbine engine is adjusted to a first position. A firing temperature of the gas turbine engine is determined based on the exhaust gas temperature. The firing temperature is compared to a threshold value and a difference value is determined therefrom. If the difference value exceeds a threshold value, the first stage turbine nozzle assembly is adjusted to a second position such that the firing temperature is substantially equal to the threshold value.

公开(公告)号：US20190023617A1

公开(公告)日：2019-01-24

申请号：US16138725

申请日：2018-09-21

Applicant: General Electric Company

Inventor： Krishan Lal Luthra ,  Gregory Scot Corman ,  Badri Narayan Ramamurthi

IPC: C04B35/80 ,  C04B35/573 ,  B05D3/10 ,  B32B5/18 ,  C23C16/04 ,  C23C16/02 ,  B32B5/02 ,  B32B7/02

Abstract: A ceramic matrix composite article includes a melt infiltration ceramic matrix composite substrate comprising a ceramic fiber reinforcement material in a ceramic matrix material having a free silicon proportion, and a chemical vapor infiltration ceramic matrix composite outer layer comprising a ceramic fiber reinforcement material in a ceramic matrix material having essentially no free silicon proportion disposed on an outer surface of at least a portion of the substrate.

公开(公告)号：US20170167276A1

公开(公告)日：2017-06-15

申请号：US14963878

申请日：2015-12-09

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Krishan Lal Luthra

IPC: F01D5/28 ,  C04B41/89 ,  C04B41/90

CPC classification number: F01D5/28 ,  C04B41/009 ,  C04B41/52 ,  C04B41/89 ,  C04B41/90 ,  F01D5/288 ,  F05D2300/2261 ,  F05D2300/6033 ,  C04B35/565 ,  C04B35/806 ,  C04B41/5059 ,  C04B41/5071 ,  C04B41/5066 ,  C04B41/522 ,  C04B41/5024 ,  C04B2103/0021 ,  C04B41/4558 ,  C04B41/5035 ,  C04B41/4529 ,  C04B41/4527 ,  C04B41/5037 ,  C04B41/5032 ,  C04B41/5042

Abstract: An article comprises a substrate comprising a ceramic matrix composite; a first layer disposed over the substrate, the first layer comprising an interconnected first silicide, and a second phase; and a second layer disposed over the first layer, the second layer comprising a second silicide in mass transfer communication with the first silicide.

公开(公告)号：US20130130042A1

公开(公告)日：2013-05-23

申请号：US13744958

申请日：2013-01-18

Applicant: General Electric Company

Inventor： Reza Sarrafi-Nour ,  Peter Joel Meschter ,  Curtis Alan Johnson ,  Krishan Lal Luthra ,  Larry Steven Rosenzweig

IPC: C09D5/00 ,  B32B9/04

CPC classification number: C09D5/00 ,  B32B9/04 ,  C01B32/956 ,  C04B41/52 ,  C04B41/89 ,  C09D1/02 ,  C23C26/00 ,  C23C28/042 ,  C23C30/00 ,  C04B41/4527 ,  C04B41/5096 ,  C04B41/5024 ,  C04B41/0072

Abstract: An article for use in aggressive environments is presented. In one embodiment, the article comprises a substrate and a self-sealing and substantially hermetic sealing layer comprising an alkaline-earth aluminosilicate disposed over the bondcoat. The substrate may be any high-temperature material, including, for instance, silicon-bearing ceramics and ceramic matrix composites.

Abstract translation: 介绍了一种用于侵略性环境的文章。 在一个实施方案中，制品包括基材和自密封且基本上气密的密封层，其包含设置在粘合涂层上的碱土铝硅酸盐。 衬底可以是任何高温材料，包括例如含硅陶瓷和陶瓷基复合材料。