Method to fabricate high temperature composite with integrated barrier coating

Patent metadata

Field	Value
Publication number	US-2023183142-A1
Application number	US-202318107555-A
Country	US
Kind code	A1
Filing date	Feb 9, 2023
Priority date	Jan 6, 2017
Publication date	Jun 15, 2023
Grant date	—

Abstract

A method of fabricating a ceramic component includes hot pressing a composite component with a glass powder / filler cover mixture to form a consolidated glass-based coating on the composite component.

First claim

What is claimed is:

1 . A method of fabricating a ceramic component, comprising:
hot pressing a composite component with a glass powder / filler cover mixture to form a consolidated glass-based environmental barrier coating with the composite component.

2 . The method as recited in claim 1 , wherein hot pressing the composite component includes filling pores in the composite component.

3 . The method as recited in claim 1 , wherein hot pressing the composite component includes densifying the composite component.

4 . The method as recited in claim 1 , wherein hot pressing the composite component includes filling pores in a Polymer Infiltration and Pyrolysis (PIP) or Chemical Vapor Infiltration (CVI) Ceramic Matrix Composite (CMC).

5 . The method as recited in claim 1 , wherein the glass powder / filler cover mixture includes a metal based bond coat.

6 . The method as recited in claim 1 , wherein the glass powder / filler cover mixture includes a glass matrix.

7 . The method as recited in claim 6 , wherein the glass matrix includes at least one of lithium aluminosilicate (LAS), barium magnesium aluminosilicate (BMAS), calcium magnesium aluminosilicate (CMAS), strontium aluminosilicate (SAS), borosilicates, other aluminosilicates, rare earth silicates, high silica and phosphate glasses, and mixtures thereof.

8 . The method as recited in claim 1 , wherein the glass powder / filler cover mixture includes a polymer-derived matrix compositions.

9 . The method as recited in claim 8 , wherein the polymer-derived matrix composition includes at least one of SiC, C—SiC, SiOC, Si3N4, SiCN, SiC/AlN, B 4 C, BCN.

10 . The method as recited in claim 1 , wherein the glass powder / filler cover mixture includes a polymeric system.

11 . The method as recited in claim 10 , wherein the polymeric system includes at least one of carbosilanes, silazanes, silanes, carbosiloxanes, aluminosiloxanes, and inorganic polymers containing B, Al or P.

12 . A ceramic component, comprising:
a Polymer Infiltration and Pyrolysis (PIP) Ceramic Matrix Composite (CMC); and a consolidated glass-based coating on the Polymer Infiltration and Pyrolysis (PIP) Ceramic Matrix Composite (CMC), the consolidated glass-based coating at least partially filling pores in the composite component.

13 . The ceramic component as recited in claim 12 , wherein the consolidated glass-based coating includes a metal based bond coat.

14 . The ceramic component as recited in claim 12 , wherein the consolidated glass-based coating includes a polymer-derived matrix composition.

15 . The ceramic component as recited in claim 12 , wherein the consolidated glass-based coating includes a polymer-derived, metallic or ceramic filler.

16 . A ceramic component, comprising:
a glass matrix composite; and a consolidated glass-based coating on the glass matrix composite, the consolidated glass-based coating at least partially filling pores in the composite component.

17 . The ceramic component as recited in claim 16 , wherein the consolidated glass-based coating includes a metal based bond coat.

18 . The ceramic component as recited in claim 16 , wherein the consolidated glass-based coating includes a glass matrix.

19 . The ceramic component as recited in claim 16 , wherein the composite matrix and environmental barrier coating are co-densified in a single step process.

20 . The ceramic component as recited in claim 16 , wherein the composite matrix and environmental barrier coating are densified in a multi-step process.

Assignees

• Raytheon Tech Corp

Inventors

• Magdefrau Neal
• Schmidt Wayde R
• Sheedy Paul

Classifications

• C04B41/5022

  with vitreous materials (composition of vitreous glazes and enamels C03C; ceramic pigments C09C1/0009) · CPC title

• C03C8/02

  Frit compositions, i.e. in a powdered or comminuted form · CPC title

• F01D5/288

  Protective coatings for blades · CPC title

• C04B41/009

  characterised by the material treated · CPC title

• F01D5/286

  Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion (F01D5/288 takes precedence) · CPC title