公开(公告)号：US20210040003A1

公开(公告)日：2021-02-11

申请号：US16536629

申请日：2019-08-09

Applicant: United Technologies Corporation

Inventor： Imelda P. Smyth ,  Sarah A. Frith

IPC: C04B41/50 ,  C04B35/565 ,  C04B41/45

Abstract: A method of fabricating a coating includes providing a ceramic matrix composite that includes SiC fibers disposed in a SiC matrix, depositing a base slurry on the ceramic matrix composite, wherein the base slurry contains powders of a metal oxide, at least one of silicon carbide, silicon nitride, or free silicon, and barium-magnesium-aluminosilicate in a first carrier fluid, drying the deposited base slurry to produce a base green layer, depositing a transition slurry on the base green layer, wherein the transition slurry contains powders of a metal oxide, at least one of silicon carbide, silicon nitride, or free silicon, at least one of zirconium carbide, zirconium nitride, or zirconium oxide, and barium-magnesium-aluminosilicate in a second carrier fluid, drying the deposited transition slurry to produce a transition green layer, and forming a consolidated coating on the ceramic matrix composite by heating the base green layer and the at least one transition green layer to cause chemical reactions that convert the powders to metal-silicon-oxygen rich phase and metal-zirconium-oxygen rich phase.

公开(公告)号：US20200055789A1

公开(公告)日：2020-02-20

申请号：US16515488

申请日：2019-07-18

Applicant: United Technologies Corporation

Inventor： Imelda P. Smyth

IPC: C04B41/50 ,  C04B35/565 ,  C04B41/45 ,  C04B41/85

Abstract: An article has a substrate and a layer atop the substrate. The layer has: a matrix comprising at least one of hafnium silicate (HfSiO4) and ytterbium disilicate (Yb2Si2O7); and barium magnesium alumino silicate (BMAS).

公开(公告)号：US20170327937A1

公开(公告)日：2017-11-16

申请号：US15151836

申请日：2016-05-11

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Imelda P. Smyth ,  Ralph E. Page ,  Alan C. Barron

IPC: C23C4/12 ,  B05D1/28 ,  C23C14/22 ,  B05D1/04 ,  F01D9/02 ,  F01D11/00 ,  F01D25/08 ,  B05D1/18 ,  C23C16/44

CPC classification number: C23C4/12 ,  B05D1/04 ,  B05D1/18 ,  B05D1/28 ,  C04B41/009 ,  C04B41/5035 ,  C04B41/52 ,  C04B41/87 ,  C04B41/89 ,  C04B2111/00982 ,  C04B2235/3891 ,  C04B2235/3895 ,  C04B2235/404 ,  C04B2235/428 ,  C04B2235/9684 ,  C04B2237/36 ,  C04B2237/365 ,  C04B2237/368 ,  C23C4/134 ,  C23C14/22 ,  C23C16/44 ,  C23C28/042 ,  F01D9/02 ,  F01D11/00 ,  F01D25/08 ,  F05D2220/30 ,  F05D2220/80 ,  F05D2230/311 ,  F05D2230/312 ,  F05D2230/313 ,  F05D2230/314 ,  F05D2230/90 ,  F05D2300/222 ,  C04B35/584 ,  C04B35/565 ,  C04B35/806 ,  C04B41/5071 ,  C04B41/5027

Abstract: A coated article, comprising an article having at least one surface having disposed thereupon an oxidation resistant coating comprising at least two constituents to form a composition, a first constituent comprising at least one thermal expansion component comprising at least about 10% by volume to up to about 99% by volume of the composition, a second constituent comprising at least one oxygen scavenger comprising at least about 1% by volume to up to about 90% by volume of the composition.

公开(公告)号：US20200087212A1

公开(公告)日：2020-03-19

申请号：US16687149

申请日：2019-11-18

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Imelda P. Smyth ,  Douglas M. Berczik

IPC: C04B35/571 ,  C04B35/56 ,  C04B35/80 ,  C04B35/65 ,  C04B35/76

Abstract: Disclosed is a method for fabricating a ceramic material from a preceramic polymer material. The method includes providing a preceramic polymer material that has a preceramic polymer and an electromagnetic radiation-responsive component. The electromagnetic radiation-responsive component is selected from cobalt, titanium, zirconium, hafnium, tantalum, tungsten, rhenium, and combinations thereof. An electromagnetic radiation is applied to the preceramic polymer material. The electromagnetic radiation interacts with the electromagnetic radiation-responsive component to generate heat that converts the preceramic polymer to a ceramic material

公开(公告)号：US20200157963A1

公开(公告)日：2020-05-21

申请号：US16542835

申请日：2019-08-16

Applicant: United Technologies Corporation

Inventor： Imelda P. Smyth ,  Xia Tang

IPC: F01D11/08

Abstract: A blade outer air seal has at least one internal surface and a layer atop the at least one internal surface. The layer has: a matrix comprising at least one of hafnium silicate (HfSiO4) and zirconium silicate (ZrSiO4), ytterbium disilicate (Yb2Si2O7); and barium magnesium alumino silicate (BMAS) or other alkaline earth aluminosilicate.

公开(公告)号：US20190084889A1

公开(公告)日：2019-03-21

申请号：US15705622

申请日：2017-09-15

Applicant: United Technologies Corporation

Inventor： Imelda P. Smyth ,  R. Wesley Jackson

IPC: C04B35/80 ,  C04B35/628 ,  C04B41/00 ,  C04B41/50 ,  C04B41/87

CPC classification number: C04B35/806 ,  C04B35/565 ,  C04B35/584 ,  C04B35/62863 ,  C04B35/62871 ,  C04B35/62884 ,  C04B41/009 ,  C04B41/5059 ,  C04B41/5066 ,  C04B41/87 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3826 ,  C04B2235/3873 ,  C04B2235/3891 ,  C04B2235/483 ,  C04B2235/5244 ,  C04B2235/614 ,  C04B2235/77 ,  C04B2235/80 ,  C04B2235/9607

Abstract: A method of fabricating a ceramic matrix composite includes generating a stream of vaporized precursor and, optionally, a vaporized rare earth element. The vaporized precursor is a precursor of either silicon carbide or silicon nitride. The stream flows for one or more periods of time through a chamber that contains a fibrous structure such that the fibrous structure is exposed to the stream. The fibrous structure initially contains no silicon carbide matrix or silicon nitride matrix. The vaporized precursor deposits over the period of time on the fibrous structure as a substantially fully dense ceramic matrix of either the silicon carbide or the silicon nitride. For at least a portion of the period of time, the vaporized rare earth element is included in the stream such that the ceramic matrix deposited during that time includes dispersed rare earth element.

公开(公告)号：US11866380B2

公开(公告)日：2024-01-09

申请号：US16536629

申请日：2019-08-09

Applicant: United Technologies Corporation

Inventor： Imelda P. Smyth ,  Sarah A. Frith

IPC: C04B41/50 ,  C04B41/45 ,  C04B35/565

CPC classification number: C04B41/5066 ,  C04B35/565 ,  C04B41/4527 ,  C04B41/4543 ,  C04B41/5024 ,  C04B41/5042 ,  C04B41/5059

Abstract: A method of fabricating a coating includes providing a ceramic matrix composite that includes SiC fibers disposed in a SiC matrix, depositing a base slurry on the ceramic matrix composite, wherein the base slurry contains powders of a metal oxide, at least one of silicon carbide, silicon nitride, or free silicon, and barium-magnesium-aluminosilicate in a first carrier fluid, drying the deposited base slurry to produce a base green layer, depositing a transition slurry on the base green layer, wherein the transition slurry contains powders of a metal oxide, at least one of silicon carbide, silicon nitride, or free silicon, at least one of zirconium carbide, zirconium nitride, or zirconium oxide, and barium-magnesium-aluminosilicate in a second carrier fluid, drying the deposited transition slurry to produce a transition green layer, and forming a consolidated coating on the ceramic matrix composite by heating the base green layer and the at least one transition green layer to cause chemical reactions that convert the powders to metal-silicon-oxygen rich phase and metal-zirconium-oxygen rich phase.

公开(公告)号：US20170369380A1

公开(公告)日：2017-12-28

申请号：US15684095

申请日：2017-08-23

Applicant: United Technologies Corporation

Inventor： Imelda P. Smyth ,  Douglas M. Berczik

IPC: C04B35/571 ,  C04B35/56 ,  C04B35/80 ,  C04B35/65 ,  C04B35/76

Abstract: Disclosed is a method for fabricating a ceramic material from a preceramic polymer material. The method includes providing a preceramic polymer material that has a preceramic polymer and an electromagnetic radiation-responsive component. The electromagnetic radiation-responsive component is selected from cobalt, titanium, zirconium, hafnium, tantalum, tungsten, rhenium, and combinations thereof. An electromagnetic radiation is applied to the preceramic polymer material. The electromagnetic radiation interacts with the electromagnetic radiation-responsive component to generate heat that converts the preceramic polymer to a ceramic material.

公开(公告)号：US09751808B2

公开(公告)日：2017-09-05

申请号：US15028517

申请日：2014-09-30

Applicant: United Technologies Corporation

Inventor： Imelda P. Smyth ,  Douglas M. Berczik

IPC: B28B11/24 ,  C04B35/571 ,  C04B35/80 ,  C04B35/65 ,  C04B35/76

CPC classification number: C04B35/571 ,  C04B35/5603 ,  C04B35/65 ,  C04B35/76 ,  C04B35/806 ,  C04B2235/3821 ,  C04B2235/3826 ,  C04B2235/3839 ,  C04B2235/3843 ,  C04B2235/3847 ,  C04B2235/3865 ,  C04B2235/3886 ,  C04B2235/40 ,  C04B2235/404 ,  C04B2235/405 ,  C04B2235/408 ,  C04B2235/483 ,  C04B2235/5244 ,  C04B2235/667

Abstract: Disclosed is a method for fabricating a ceramic material from a preceramic polymer material. The method includes providing a preceramic polymer material that has a preceramic polymer and an electromagnetic radiation-responsive component. The electromagnetic radiation-responsive component is selected from boron-containing compounds, cobalt, titanium, zirconium, hafnium, tantalum, tungsten, rhenium, nitrides of aluminum, nitrides of titanium, nitrides of zirconium, nitrides of hafnium, nitrides of tantalum, nitrides of tungsten, nitrides of rhenium, carbides of aluminum, carbides of titanium, carbides of zirconium, carbides of hafnium, carbides of tantalum, carbides of tungsten, carbides of rhenium and combinations thereof. An electromagnetic radiation is applied to the preceramic polymer material. The electromagnetic radiation interacts with the electromagnetic radiation-responsive component to generate heat that converts the preceramic polymer to a ceramic material.

公开(公告)号：US10544063B2

公开(公告)日：2020-01-28

申请号：US15705622

申请日：2017-09-15

Applicant: United Technologies Corporation

Inventor： Imelda P. Smyth ,  R. Wesley Jackson

IPC: C04B35/80 ,  C04B35/628 ,  C04B41/00 ,  C04B41/50 ,  C04B41/87

Abstract: A method of fabricating a ceramic matrix composite includes generating a stream of vaporized precursor and, optionally, a vaporized rare earth element. The vaporized precursor is a precursor of either silicon carbide or silicon nitride. The stream flows for one or more periods of time through a chamber that contains a fibrous structure such that the fibrous structure is exposed to the stream. The fibrous structure initially contains no silicon carbide matrix or silicon nitride matrix. The vaporized precursor deposits over the period of time on the fibrous structure as a substantially fully dense ceramic matrix of either the silicon carbide or the silicon nitride. For at least a portion of the period of time, the vaporized rare earth element is included in the stream such that the ceramic matrix deposited during that time includes dispersed rare earth element.