High Temperature Composites With Enhanced Matrix

Patent metadata

Field	Value
Publication number	US-2017342844-A1
Application number	US-201615168522-A
Country	US
Kind code	A1
Filing date	May 31, 2016
Priority date	May 31, 2016
Publication date	Nov 30, 2017
Grant date	—

Abstract

A composite article comprises a substrate, the substrate comprising a silicon containing material and an additive comprising boron nitride nanotubes.

First claim

What is claimed is:

1 . A composite article comprising:
a substrate, said substrate comprising a silicon containing material and an additive comprising boron nitride nanotubes.

2 . The composite article according to claim 1 , wherein said silicon containing material is selected from the group consisting of glass, glass/ceramic and ceramic matrix composite.

3 . The composite article according to claim 2 , wherein said boron nitride nanotubes are one of chemically modified and physically modified with additional layers, wherein said additional layers comprise coatings selected from the group consisting of Al, Si, Ba, Ti, Y, La, Ga, Ta, Zr, Hf, Sr, Ca and the like and combinations thereof.

4 . The composite article according to claim 3 , wherein said modification comprises atomic layer deposition.

5 . The composite article according to claim 1 , further comprising:
at least one of an environmental barrier coating, a thermal barrier coating, a velocity barrier, an abradable coating, and erosion resistant coating coupled to said substrate.

6 . The composite article according to claim 1 , wherein said substrate comprises at least one of a material formed of a single, continuous mass of material and a composite of several different ceramic materials, carbon-based material or ceramic and metallic and carbon-based material.

7 . The composite article according to claim 1 , wherein said additive is uniformly dispersed in at least one of the substrate and at least one of an environmental barrier coating, a thermal barrier coating, a velocity barrier, an abradable coating, and an erosion resistant coating coupled to said substrate.

8 . A turbine engine component comprising:
a substrate, said substrate comprising a silicon containing material, wherein said silicon containing material is selected from the group consisting of glass, glass/ceramic and ceramic matrix composite; and an additive comprising boron nitride nanotubes.

9 . The turbine engine component according to claim 8 .
further comprising: at least one of an environmental barrier coating, a thermal barrier coating, a velocity barrier, an abradable coating, and an erosion resistant coating coupled to said substrate.

10 . The turbine engine component according to claim 8 , wherein said boron nitride nanotubes are one of chemically modified and physically modified with additional layers, wherein said additional layers comprise coatings selected from the group consisting of Al, Si, Ba, Ti, Y, La, Ga, Ta, Zr, Hf, Sr, Ca and the like and combinations thereof.

11 . The turbine engine component according to claim 9 , wherein said additive is uniformly dispersed in at least one of the substrate and at least one of an environmental barrier coating, a thermal barrier coating, a velocity barrier, an abradable coating, and an erosion resistant coating coupled to said substrate.

12 . The turbine engine system according to claim 8 ,
wherein said substrate comprises at least one of a material formed of a single, continuous mass of material and a composite of several different ceramic materials, carbon-based material or ceramic and metallic and carbon-based material.

13 . The turbine engine system according to claim 8 , wherein turbine engine component is selected from the group consisting of a combustor liner, an airfoil, a turbine blade or vane, a compressor blade or vane, blade outer air seal.

14 . A process for enhancing the thermal and mechanical properties of a composite material, said process comprising:
adding a boron nitride nanotube additive to said composite material formed from a silicon-containing material.

15 . The process of claim 14 , wherein said silicon containing material is selected from the group consisting of glass, glass/ceramic and ceramic matrix composite.

16 . The process of claim 14 , further comprising:
modifying said boron nitride nanotubes by adding at least one additional layer to said boron nitride nanotubes.

17 . The process of claim 16 , wherein said at least one additional layer comprises coatings of selected from the group consisting of Al, Si, Ba, Ti, Y, La, Ga, Ta, Zr, Hf, Sr, Ca and the like and combinations thereof

18 . The process of claim 14 , further comprising:
coating said composite material with at least one of an environmental barrier coating, a thermal barrier coating, a velocity barrier, an abradable coating, and an erosion resistant coating.

19 . The process of claim 18 , further comprising:
uniformly dispersing the additive throughout at least one of the composite material and at least one of the environmental barrier coating, the thermal barrier coating, the velocity barrier, the abradable coating, and the erosion resistant coating.

Assignees

• United Technologies Corp

Inventors

• Schmidt Wayde R
• Sheedy Paul
• Magdefrau Neal

Classifications

• F01D11/08

  for sealing space between rotor blade tips and stator (specially-shaped blade tips therefor F01D5/20) · CPC title

• C04B2235/3251

  Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof · CPC title

• F01D9/041

  using blades (F01D5/148 takes precedence) · CPC title

• C04B2235/5284

  Hollow fibers, e.g. nanotubes · CPC title

• C04B2235/524

  Non-oxidic, e.g. borides, carbides, silicides or nitrides · CPC title