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US 2022/0065113 A1Published application
Environmental barrier coating
AssigneeRaytheon Technologies Corporation
InventorsRichard Wesley Jackson, Xia Tang, James T. Beals, Gajawalli V. Srinivasan, William K. Tredway
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Abstract
An article includes a substrate and a barrier layer on the substrate. The barrier layer includes a matrix, diffusive particles dispersed in the matrix, and gettering particles dispersed in the matrix. The gettering particles include at least one alloyed metal silicide. A composite material and a method of fabricating an article are also disclosed.
Claims20
An article comprising:
- a substrate;
- and
- a barrier layer on the substrate, the barrier layer including a matrix, diffusive particles dispersed in the matrix, and gettering particles dispersed in the matrix, wherein the gettering particles include at least one alloyed metal silicide.
An composite material, comprising:
- a matrix,
- diffusive particles dispersed in the matrix, wherein the diffusive particles provide self-healing to the composite material;
- and
- gettering particles dispersed in the matrix, wherein the gettering particles include at least one alloyed metal silicide, and wherein the gettering particles inhibit the infiltration of oxidants through the composite material.
1 more element
A method of fabricating an article, comprising:
- applying a slurry containing diffusive particles, gettering particles, and matrix material in a carrier fluid to a substrate, wherein the gettering particles include at least one alloyed metal silicide;
- and
- sintering the slurry to form a barrier layer.
Dependencies are inferred from the claim text.