Silicon oxycarbide environmental barrier coating

Patent metadata

Field	Value
Publication number	US-12319629-B2
Application number	US-202318476686-A
Country	US
Kind code	B2
Filing date	Sep 28, 2023
Priority date	Jan 14, 2014
Publication date	Jun 3, 2025
Grant date	Jun 3, 2025

Abstract

An article includes a ceramic-based substrate and a barrier layer on the ceramic-based substrate. The barrier layer includes a matrix of barium-magnesium alumino-silicate or SiO 2 , a dispersion of silicon oxycarbide particles in the matrix, and a dispersion of particles, of the other of barium-magnesium alumino-silicate or SiO 2 , in the matrix.

First claim

The invention claimed is:

1. A method of making a composite material comprising:
mixing at least one of barium-magnesium alumino-silicate, SiO 2 , and colloidal silica with silicon oxycarbide in a carrier fluid to form a slurry;
drying the slurry to remove the carrier fluid; and
curing the slurry such that cross-linking occurs in the composite material,
wherein the mixing includes mixing barium-magnesium alumino-silicate, SiO 2 , and silicon oxycarbide.

2. The method of claim 1 , wherein the drying and the curing are simultaneous.

3. The method of claim 1 , further comprising sintering the composite material after the curing.

4. The method of claim 1 , wherein the carrier fluid is water.

5. The method of claim 1 , wherein the drying and curing are performed for at least 15 minutes.

6. A method of making a composite material comprising:
mixing at least one of barium-magnesium alumino-silicate, SiO 2 , and colloidal silica with silicon oxycarbide in a carrier fluid to form a slurry;
drying the slurry to remove the carrier fluid; and
curing the slurry such that cross-linking occurs in the composite material,
wherein the mixing includes mixing barium-magnesium alumino-silicate, colloidal silica, and silicon oxycarbide.

7. The method of claim 6 , wherein the drying and curing are performed for at least 15 minutes.

8. A method of making a composite material comprising:
mixing at least one of barium-magnesium alumino-silicate, SiO 2 , and colloidal silica with silicon oxycarbide in a carrier fluid to form a slurry;
drying the slurry to remove the carrier fluid; and
curing the slurry such that cross-linking occurs in the composite material,
wherein the drying and curing are performed at 200° C. for at least 15 minutes.

9. The method of claim 8 , wherein the mixing includes mixing barium-magnesium alumino-silicate, SiO 2 , and silicon oxycarbide.

10. The method of claim 8 , wherein the mixing includes mixing barium-magnesium alumino-silicate, colloidal silica, and silicon oxycarbide.

Assignees

• Rtx Corp

Inventors

• Tang Xia
• Sheedy Paul
• Kashyap Tania Bhatia
• Schmidt Wayde R
• Goberman Daniel G

Classifications

• C04B35/5603

  with a well-defined oxygen content, e.g. oxycarbides · CPC title

• C04B35/195

  Alkaline earth aluminosilicates, e.g. cordierite {or anorthite} · CPC title

• C04B35/14

  based on silica · CPC title

• C04B35/565

  based on silicon carbide · CPC title

• B32B2307/7265

  Non-permeable · CPC title