US-12624229-B2 - Environmental barrier coating with thermal resistance

Abstract

An article includes a substrate and a bond coat disposed on the substrate. The bond coat includes a matrix, a plurality of gettering particles disposed in the matrix, a plurality of diffusive particles disposed in the matrix, a radiation-absorbing component disposed in the matrix, wherein the radiation-absorbing component is concentrated at an outer surface of the bond coat. An article and a method of protecting an article are also disclosed.

Inventors

• Richard Wesley Jackson, III
• Xia Tang
• James T. Beals
• David A. Litton
• Brian T. Hazel

Assignees

• RAYTHEON TECHNOLOGIES CORPORATION

Dates

Publication Date

20260512

Application Date

20221121

Claims (16)

1. 1 . An article, comprising: a substrate; and a bond coat disposed on the substrate, the bond coat including: a matrix; a plurality of gettering particles disposed in the matrix; a plurality of diffusive particles disposed in the matrix; and a radiation-absorbing component disposed in the matrix, wherein the radiation-absorbing component is concentrated at an outer surface of the bond coat, and the radiation-absorbing component includes at least one of La 2 NiO 4 and LaFeO 3 .
2. 2 . The article of claim 1 , wherein the at least some of the diffusive particles are the radiation-absorbing component.
3. 3 . The article of claim 1 , wherein at least about 75% of the radiation-absorbing component is dispersed in the outer 25% of a thickness of the bond coat.
4. 4 . The article of claim 1 , wherein the radiation-absorbing component includes a first material that absorbs radiation in a first range of wavelengths and a second material that absorbs radiation in a second range of wavelengths different from the first range.
5. 5 . The article of claim 1 , wherein the radiation-absorbing component absorbs radiation in the infrared range.
6. 6 . The article of claim 1 , further comprising an oxide-based topcoat interfaced with an outer surface of the bond coat.
7. 7 . The article of claim 6 , wherein the topcoat includes the radiation-absorbing component.
8. 8 . The article of claim 1 , wherein the substrate is a ceramic matrix composite.
9. 9 . An article, comprising: a substrate; and a bond coat disposed on the substrate, the bond coat including: a matrix; a plurality of gettering particles disposed in the matrix; a plurality of diffusive particles disposed in the matrix; and an oxide-based topcoat interfaced with an outer surface of the bond coat, the topcoat including a radiation-absorbing component, and the radiation-absorbing component includes at least one of La 2 NiO 4 and LaFeO 3 .
10. 10 . The article of claim 9 , wherein the radiation-absorbing component includes at least one of wherein the radiation-absorbing component includes at least one of transition metal oxides, phosphorescing rare earth ions, lanthanide metals, lanthanide metal oxides, lanthanide silicates, and alloys of rare-earth metals with lanthanide metals.
11. 11 . The article of claim 9 , wherein the radiation-absorbing component includes a first material that absorbs radiation in a first range of wavelengths and a second material that absorbs radiation in a second range of wavelengths different from the first range.
12. 12 . The article of claim 9 , wherein the radiation-absorbing component absorbs radiation in the infrared range.
13. 13 . The article of claim 9 , wherein the topcoat includes an inner layer interfaced with the outer surface of the bond coat and an outer layer disposed on the inner layer, and wherein the outer layer includes the radiation-resistance component.
14. 14 . The article of claim 9 , wherein the bond coat includes the radiation- resistance component disposed in the matrix.
15. 15 . An article, comprising: a substrate; and a bond coat disposed on the substrate, the bond coat including: a matrix; a plurality of gettering particles disposed in the matrix; a plurality of diffusive particles disposed in the matrix; and a radiation-absorbing component disposed in the matrix, wherein the radiation-absorbing component includes a di-lanthanide nickelate.
16. 16 . The article as recited in claim 15 , wherein the di-lanthanide nickelate is doped with an alkaline earth element.

Description

BACKGROUND A gas turbine engine typically includes a fan section, a compressor section, a combustor section and a turbine section. Air entering the compressor section is compressed and delivered into the combustion section where it is mixed with fuel and ignited to generate a high-energy exhaust gas flow. The high-energy exhaust gas flow expands through the turbine section to drive the compressor and the fan section. The compressor section typically includes low and high pressure compressors, and the turbine section includes low and high pressure turbines. This disclosure relates to composite articles, such as those used in gas turbine engines, and methods of coating such articles. Components, such as gas turbine engine components, may be subjected to high temperatures, corrosive and oxidative conditions, and elevated stress levels. In order to improve the thermal and/or oxidative stability, the component may include a protective barrier coating. SUMMARY An article according to an exemplary embodiment of this disclosure, among other possible things includes a substrate and a bond coat disposed on the substrate. The bond coat includes a matrix, a plurality of gettering particles disposed in the matrix, a plurality of diffusive particles disposed in the matrix, a radiation-absorbing component disposed in the matrix, wherein the radiation-absorbing component is concentrated at an outer surface of the bond coat. In a further example of any of the foregoing, the radiation-absorbing component includes at least one of wherein the radiation-absorbing component includes at least one of transition metal oxides, phosphorescing rare earth ions, lanthanide metals, lanthanide metal oxides, lanthanide silicates, and alloys of rare-earth metals with lanthanide metals. In a further example of any of the foregoing, the radiation-absorbing component includes at least one of La2NiO4 and LaFeO3. In a further example of any of the foregoing, the at least some of the diffusive particles are the radiation-absorbing component. In a further example of any of the foregoing, at least about 75% of the radiation-absorbing component 200 is dispersed in the outer 25% of a thickness of the bond coat. In a further example of any of the foregoing, the radiation-absorbing component includes a first material that absorbs radiation in a first range of wavelengths and a second material that absorbs radiation in a second range of wavelengths different from the first range. In a further example of any of the foregoing, the radiation-absorbing component absorbs radiation in the infrared range. In a further example of any of the foregoing, the article includes an oxide-based topcoat interfaced with an outer surface of the bond coat. In a further example of any of the foregoing, the topcoat includes the radiation-absorbing component. In a further example of any of the foregoing, the substrate is a ceramic matrix composite. An article according to an exemplary embodiment of this disclosure, among other possible things include a substrate and a bond coat disposed on the substrate. The bond coat includes a matrix, a plurality of gettering particles disposed in the matrix, a plurality of diffusive particles disposed in the matrix, and an oxide-based topcoat interfaced with an outer surface of the bond coat. The topcoat includes a radiation-absorbing component. In a further example of the foregoing, the radiation-absorbing component includes at least one of wherein the radiation-absorbing component includes at least one of transition metal oxides, phosphorescing rare earth ions, lanthanide metals, lanthanide metal oxides, lanthanide silicates, and alloys of rare-earth metals with lanthanide metals. In a further example of any of the foregoing, the radiation-absorbing component includes at least one of La2NiO4 and LaFeO3. In a further example of any of the foregoing, wherein the radiation-absorbing component includes a first material that absorbs radiation in a first range of wavelengths and a second material that absorbs radiation in a second range of wavelengths different from the first range. In a further example of any of the foregoing, the radiation-absorbing component absorbs radiation in the infrared range. In a further example of any of the foregoing, the topcoat includes an inner layer interfaced with the outer surface of the bond coat and an outer layer disposed on the inner layer. The outer layer includes the radiation-resistance component. In a further example of any of the foregoing, the bond coat includes the radiation-resistance component disposed in the matrix. A method of protecting an article according to an exemplary embodiment of this disclosure, among other possible things include providing a barrier layer on an article. The barrier layer includes a bond coat disposed on the substrate. The bond coat includes a matrix, a plurality of gettering particles disposed in the matrix, a plurality of diffusive particles disposed in the matrix, a