Adhesion of a Substrate onto a CMC Component

• US 20180297346A1
• Filed: 04/18/2017
• Published: 10/18/2018
• Est. Priority Date: 04/18/2017
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Aug, Daniel James, Brown, Joshua Daniel, Dziech, Aaron Michael, Fields, Joseph Herbert, Gessner, Kenneth Michael
• Granted Patent: US 11,285,711 B2
• Time in Patent Office: Days
• CPC Class Codes: B32B 13/06 of metal
• CPC Class Codes: B32B 2037/243 Coating
• CPC Class Codes: B32B 2250/44 Number of layers variable across the laminate
• CPC Class Codes: B32B 2255/06 on metal layer
• CPC Class Codes: B32B 2255/20 Inorganic coating
• CPC Class Codes: B32B 2255/205 Metallic coating
• CPC Class Codes: B32B 2255/28 Multiple coating on one surface
• CPC Class Codes: B32B 2307/306 Resistant to heat
• CPC Class Codes: B32B 2309/105 Thickness
• CPC Class Codes: B32B 2311/00 Metals, their alloys or their compounds
• CPC Class Codes: B32B 2311/22 Nickel or cobalt
• CPC Class Codes: B32B 2311/24 Aluminium
• CPC Class Codes: B32B 2315/02 Ceramics
• CPC Class Codes: B32B 2457/00 Electrical equipment
• CPC Class Codes: B32B 37/12 characterised by using adhesives
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: B32B 9/005 comprising one layer of ceramic material, e.g. porcelain, ceramic tile layered products with at least two ceramic layers composed mainly of ceramic B32B18/00
• CPC Class Codes: B32B 9/04 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a glass layer B32B17/06; layered products with at least two ceramic layers composed mainly of ceramic B32B18/00
• CPC Class Codes: F23R 2900/00017 Assembling combustion chamber liners or subparts
• CPC Class Codes: F23R 2900/00018 Manufacturing combustion chamber liners or subparts
• CPC Class Codes: F23R 3/002 : Wall structures F23R3/02 and F23R3/007 take precedence
• CPC Class Codes: F23R 3/007 : constructed mainly of ceramic components
• CPC Class Codes: Y02T 50/60 : Efficient propulsion technologies, e.g. for aircraft

Abstract

Methods for adhering a substrate onto a surface of a ceramic component are provided. The method may include applying a first bond coating onto an attachment surface of the substrate, applying a first alumina coating onto the first bond coating on the attachment surface of the substrate, applying a second bond coating onto an outer surface of the ceramic component, applying a second alumina coating onto the second bond coating on the attachment surface of the substrate, applying a cement onto at least one of the first alumina coating and the second alumina coating, and adhering the attachment surface of the substrate onto the outer surface of the ceramic component. Connections between a metal substrate and a ceramic matrix composite component are also provided.

Claims

1. A method of adhering a substrate onto a surface of a ceramic component, the method comprising:

applying a first bond coating onto an attachment surface of the substrate;

applying a first alumina coating onto the first bond coating on the attachment surface of the substrate;

applying a second bond coating onto an outer surface of the ceramic component;

applying a second alumina coating onto the second bond coating on the attachment surface of the substrate;

applying a cement onto at least one of the first alumina coating and the second alumina coating; and

adhering the attachment surface of the substrate onto the outer surface of the ceramic component.

2. The method as in claim 1, wherein the substrate is formed from a metal or metal alloy.

3. The method as in claim 1, wherein the ceramic component comprises a ceramic matrix composite, and wherein an environmental barrier coating is on the surface of the ceramic component.

4. The method as in claim 1, wherein the first bond coating comprises Ni and Al.

5. The method as in claim 4, wherein the first bond coating comprises NiCrAlY.

6. The method as in claim 1, wherein the first bond coating has a thickness of about 25 μ

m to about 100 μ

m, and wherein the first alumina coating has a thickness of about 25 μ

m to about 100 μ

m.

7. The method as in claim 1, wherein the second bond coating comprises silicon metal, and wherein the second bond coating has a thickness of about 50 μ

m to about 150 μ

m, and further wherein the second alumina coating has a thickness of about 25 μ

m to about 100 μ

m.

8. The method as in claim 1, wherein the cement comprises an alumina adhesive.

9. The method as in claim 1, wherein the substrate comprises a stem extending from the substrate and at least one retainer arm extending from the stem to a terminal end.

10. The method as in claim 9, further comprising:

applying a cement onto the terminal end of the stem; and

adhering the terminal end of the stem onto the surface of the ceramic component.

11. The method as in claim 1, wherein the ceramic component defines an aperture on the surface, and wherein the substrate comprises a probe extending into the aperture.

12. A connection between a metal substrate and a ceramic matrix composite component, comprising:

a first bond coating and a first alumina coating on an attachment surface of the substrate;

a second bond coating and a second alumina coating on an outer surface of the ceramic component; and

a cement positioned between the attachment surface on the substrate and the surface of the ceramic component, wherein the first alumina coating and the second alumina coating face each other.

13. The connection as in claim 12, wherein the ceramic component comprises a ceramic matrix composite.

14. The connection as in claim 13, wherein the ceramic component is a flowpath component of a gas turbine engine and defines an aperture on the surface, and wherein the substrate comprises a probe extending into the aperture.

15. The connection as in claim 12, wherein the ceramic component is a combustion liner of a gas turbine engine and defines an aperture on the surface, and wherein the substrate comprises a pressure probe extending into the aperture.

16. The connection as in claim 12,

wherein the first bond coating is directly on the attachment surface of the substrate, and wherein the first alumina coating is directly on the first bond coating;

and

wherein the second bond coating is directly on the outer surface of the ceramic component, and wherein the second alumina coating is directly on the second bond coating.

17. The connection as in claim 12, wherein the first bond coating comprises NiCrAlY, and wherein the first bond coating has a thickness of about 25 μ

m to about 100 μ

m, and further wherein the first alumina coating has a thickness of about 25 μ

m to about 100 μ

m.

18. The connection as in claim 12, wherein the second bond coating comprises silicon metal, and wherein the second bond coating has a thickness of about 50 μ

m to about 150 μ

m, and further wherein the second alumina coating has a thickness of about 25 μ

m to about 100 μ

m.

19. The connection as in claim 12, wherein the substrate comprises a stem extending from the substrate, and wherein the connection further comprises at least one retainer arm extending from the stem to a terminal end, and wherein the at least one retainer arm is adhered to the outer surface of the ceramic component via the cement.

20. The connection as in claim 12, wherein the ceramic component defines an aperture on the surface, and wherein the substrate comprises a probe extending into the aperture.