公开(公告)号：US20180370862A1

公开(公告)日：2018-12-27

申请号：US15744480

申请日：2016-08-17

Applicant: General Electric Company

Inventor： Glen Harold KIRBY ,  Julin WAN ,  Sivakumar RAMASAMY

IPC: C04B41/50 ,  C04B41/87 ,  C04B41/00 ,  C04B41/45 ,  F01D5/28 ,  C23C4/11 ,  C23C4/134 ,  C23C4/18

Abstract: A coated substrate is provided that includes an environmental barrier coating on (e.g., directly on) a surface of a substrate (e.g., a ceramic matrix composite). The environmental barrier coating can include a barrier layer having a refractory material phase and a silicon-containing glass phase. The silicon-containing glass phase may be a continuous phase within the barrier layer (e.g., a breathable grain boundary of the barrier layer), or may be a plurality of discontinuous layers dispersed throughout the refractory material phase. The refractory material phase can include a rare earth silicate material having a rare earth component at a first atomic percent, while the silicon-containing glass phase comprises the rare earth component at a second atomic percent that is less than the first atomic percent. Methods are also provided for forming a barrier layer on a substrate.

公开(公告)号：US20170101348A1

公开(公告)日：2017-04-13

申请号：US14878000

申请日：2015-10-08

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Julin WAN ,  Don Mark LIPKIN

IPC: C04B41/85 ,  C23C16/04 ,  C04B41/50

CPC classification number: C04B41/5006 ,  B32B18/00 ,  C04B35/58092 ,  C04B35/584 ,  C04B41/009 ,  C04B41/5058 ,  C04B41/5062 ,  C04B41/5064 ,  C04B41/52 ,  C04B41/89 ,  C23C16/045 ,  F01D5/288 ,  F05D2220/32 ,  F05D2230/90 ,  F05D2300/123 ,  F05D2300/222 ,  F05D2300/6033 ,  C04B35/565 ,  C04B35/806 ,  C04B41/5096 ,  C04B41/4558 ,  C04B41/5035 ,  C04B41/5022 ,  C04B41/522 ,  C04B41/5024

Abstract: The disclosure provides for an article including a substrate, an environmental barrier coating (EBC), a bondcoat and a boron source. The substrate may include a silicon-including ceramic material. The EBC may be disposed over the substrate, and the bondcoat may disposed between the substrate and the EBC. The bondcoat may include silicon. The boron source may be disposed within the article to provide an effective amount of boron to form an oxide including silicon and at least 0.1 weight percent boron during exposure of the bondcoat to an oxidizing environment at a temperature greater than 900 degrees Celsius. The oxide may be a borosilicate glass that is substantially devitrification resistant to prevent spallation of the EBC and thereby enhance the temperature capability of the article.

公开(公告)号：US20170218779A1

公开(公告)日：2017-08-03

申请号：US15501332

申请日：2015-08-18

Applicant: General Electric Company

Inventor： Krishnan Lal LUTHRA ,  Julin WAN ,  Reza SARRAFI-NOUR

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

CPC classification number: F01D5/282 ,  C04B41/009 ,  C04B41/5035 ,  C04B41/52 ,  C04B41/85 ,  C04B41/89 ,  C23C4/04 ,  F01D5/288 ,  F05D2240/35 ,  F05D2300/2261 ,  F05D2300/2281 ,  F05D2300/2283 ,  F05D2300/6033 ,  C04B35/565 ,  C04B35/806 ,  C04B35/584 ,  C04B41/4527 ,  C04B41/5031 ,  C04B41/5096 ,  C04B41/5024 ,  C04B41/5042 ,  C04B41/522

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：US20160215631A1

公开(公告)日：2016-07-28

申请号：US14445665

申请日：2014-07-29

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Julin WAN

IPC: F01D5/28 ,  F23R3/00

CPC classification number: F01D5/288 ,  C04B41/009 ,  C04B41/52 ,  C04B41/89 ,  F23R3/002 ,  C04B35/00 ,  C04B35/565 ,  C04B35/806 ,  C04B35/584 ,  C04B35/58092 ,  C04B41/4572 ,  C04B41/5059 ,  C04B41/5096 ,  C04B41/522 ,  C04B41/5066 ,  C04B41/5071 ,  C04B41/4582 ,  C04B41/5024 ,  C04B2103/0021 ,  C04B2103/001 ,  C04B41/5032 ,  C04B41/5042

Abstract: An article includes a substrate, a substantially hermetic sealing layer disposed on the substrate, and a porous transition layer disposed on the substrate between the sealing layer and the substrate. The article also includes one or more openings extending through the substrate to the porous transition layer.

Abstract translation: 一种制品包括基底，设置在基底上的基本上气密的密封层，以及在密封层和基底之间设置在基底上的多孔过渡层。 该制品还包括一个或多个开口延伸穿过基底到多孔过渡层。

公开(公告)号：US20160017749A1

公开(公告)日：2016-01-21

申请号：US14772883

申请日：2014-03-04

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Krishan Lal LUTHRA ,  Don M. LIPKIN ,  Julin WAN

IPC: F01D25/00 ,  C04B35/565

Abstract: High-temperature machine components, more particularly, articles capable of operating in high-temperature environments, including for example turbines of gas engines, may be formed of a high temperature ceramic matrix composite that includes a ceramic substrate including silicon; an environmental harrier coating system including a silicon containing bond coat; and a diffusion barrier layer of a carbide or a nitride between the substrate of the article and the silicon bond coat of the environmental barrier coating system. The diffusion harrier layer selectively prevents or reduces the diffusion of boron and impurities from the substrate to the bond coat of the environmental barrier coating system.

Abstract translation: 高温机器部件，更具体地，能够在高温环境中操作的制品，包括例如燃气发动机的涡轮机，可以由包括包括硅的陶瓷基板的高温陶瓷基体复合材料形成; 包括含硅粘结涂层的环境覆盖系统; 以及物品的基板与环境保护涂覆系统的硅键合层之间的碳化物或氮化物的扩散阻挡层。 扩散阻挡层选择性地防止或减少硼和杂质从衬底到环境屏障涂层系统的粘结层的扩散。