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US 11,692,274 B2Granted
Environmental barrier coating with oxygen-scavenging particles having barrier shell
AssigneeRaytheon Technologies Corporation
InventorsKenneth David Smith, Xia Tang, Paul Sheedy
Life of this patent
Estimating the term…
Abstract
A gas turbine engine article includes a substrate and an environmental barrier coating disposed on the substrate. The environmental barrier coating includes oxygen-scavenging particles. Each oxygen-scavenging particle includes a silicon-containing core particle encased in an oxygen barrier shell.
Claims16
A gas turbine engine article comprising:
- a substrate;
- and
- an environmental barrier coating disposed on the substrate, the environmental barrier coating including oxygen-scavenging particles, each said oxygen-scavenging particle including a silicon-containing core particle encased in an oxygen barrier shell, wherein the silicon-containing core particle is a silicide of a first metal selected from the group consisting of Mo, Nb, Zr, Hf, Ti, W, Y, Yb, Cr, V, Ta, Zn, and combinations thereof, the oxygen barrier shell includes a shell layer of a compound of a second metal, B (boron), and an element selected from the group consisting of Si, C, O, Al, and combinations thereof, and the second metal is the same as the first metal.
A gas turbine engine article comprising:
- a substrate;
- and
- an environmental barrier coating disposed on the substrate, the environmental barrier coating including oxygen-scavenging particles, each said oxygen-scavenging particle including a silicon-containing core particle encased in an oxygen barrier shell, wherein the silicon-containing core particle is selected from the group consisting of silicon carbide, silicon oxycarbide, silicon oxycarbonitride, silicon aluminum oxynitride, and combinations thereof, the oxygen barrier shell includes a shell layer of a compound of a metal selected from a group consisting of Mo, Nb, Zr, Hf, Ti, W, Y, Yb, Cr, V, Ta, Zn, and combinations thereof with B (boron) and an element selected from the group consisting of Si, C, O, Al, and combinations thereof.
A method of fabricating a gas turbine engine article, the method comprising:
- providing a substrate and oxygen-scavenging particles, wherein each said oxygen-scavenging particle includes a silicon-containing core particle encased in an oxygen barrier shell, the silicon-containing core particle is a silicide of a first metal selected from the group consisting of Mo, Nb, Zr, Hf, Ti, W, Y, Yb, Cr, V, Ta, Zn, and combinations thereof, the oxygen barrier shell includes a shell layer of a compound of a second metal, B (boron), and an element selected from the group consisting of Si, C, O, Al, and combinations thereof, and the second metal is the same as the first metal;
- and
- depositing the oxygen-scavenging particles on the substrate to form an environmental barrier coating.
Dependencies are inferred from the claim text.