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US 12,091,368 B2Granted
Reaction barrier layer for environmental barrier coating
AssigneeROLLS-ROYCE plc
InventorTaylor K. Blair
Life of this patent
Estimating the term…
Abstract
A method may include applying a layer comprising a carbon source on a surface of a substrate including silicon; applying a layer comprising silicon on the layer comprising elemental carbon; and heat treating at least the layer comprising the carbon source to cause carbon from the layer comprising the carbon source to react with at least one of silicon from the substrate or silicon from the layer comprising silicon to form silicon carbide.
Claims19
A method comprising:
- applying a layer comprising a carbon source on a surface of a substrate including silicon;
- applying a layer comprising silicon on the layer comprising the carbon source, wherein the layer comprising silicon is adjacent to the layer comprising the carbon source;
- applying an environmental barrier coating on the layer comprising silicon, wherein the layer comprising silicon is between the substrate including silicon and the environmental barrier coating;
- and
- heat treating at least the layer comprising the carbon source to cause carbon from the layer comprising the carbon source to react with at least one of silicon from the substrate or silicon from the layer comprising silicon to form silicon carbide.
2 more elements
A method comprising:
- roughening a surface of a ceramic substrate or a ceramic matrix composite substrate, wherein the ceramic substrate or the ceramic matrix composite substrate comprises silicon;
- forming a layer comprising elemental carbon on a surface of the ceramic substrate or ceramic matrix composite substrate;
- forming a layer comprising silicon metal on the layer comprising elemental carbon;
- forming an environmental barrier coating on the layer comprising silicon, wherein the layer comprising silicon is between the substrate and the environmental barrier coating;
- and
- heat treating the substrate, the layer comprising elemental carbon, the layer comprising silicon metal, and the environmental barrier coating to cause carbon from the layer comprising elemental carbon to react with silicon from the substrate and silicon from the layer comprising silicon to form silicon carbide.
3 more elements
An article comprising:
- a ceramic substrate or ceramic matrix composite substrate comprising silicon;
- a reaction barrier layer adjacent to a surface of the ceramic substrate or a ceramic matrix composite substrate, wherein the reaction barrier layer comprises silicon carbide;
- a layer comprising elemental carbon adjacent to the reaction barrier layer;
- a bond layer comprising silicon adjacent to the layer comprising elemental carbon;
- and
- an environmental barrier coating adjacent to the bond layer comprising silicon, wherein the bond layer comprising silicon, the layer comprising elemental carbon, and the reaction barrier layer are between the substrate and the environmental barrier coating.
3 more elements
Dependencies are inferred from the claim text.