Compositions containing gallium and/or indium and methods of forming the same
AssigneeGeneral Electric Company
InventorsGlen Harold Kirby, Julin Wan
Life of this patent
Estimating the term…
Abstract
A composition is provided that includes a silicon-containing material (e.g., a silicon metal and/or a silicide) and about 0.001% to about 85% of a Ga-containing compound, an In-containing compound, or a mixture thereof. The silicon-based layer can be a bond coating directly on the surface of the substrate. Alternatively or additionally, the silicon-based layer can be an outer layer defining a surface of the substrate, with an environmental barrier coating on the surface of the substrate. A coated component is also provided, as well as a method for coating a ceramic component. Gas turbine engines are also provided that include such a ceramic component.
Claims16
A composition, comprising:
- a silicon-containing material and about 0.001% to about 85% of an In-containing compound, wherein the In-containing compound is selected from the group consisting of:
- Ln2-x-yGaxInySi2O7 where Ln is Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof;
- x is 0 to about 1;
- and y is greater than 0 to about 1;
- Ln2-x-yGaxInySi2O5 where Ln is Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof;
- x is 0 to about 1;
- and y is greater than 0 to about 1;
- Ln4-xDxIn2-yGayO9 where Ln is La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, or a mixture thereof;
- D is Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof;
- x is 0 to about 2;
- and y is 0 to about 1;
- and
- a mixture thereof.
A composition, comprising:
- a silicon-containing material and an In-containing compound, wherein the In-containing compound has a formula:
- Ln4-xDxGa2-yInyO9
- where:
- Ln is La, Ce, Pr, Nd, Pm, Sm, or a mixture thereof;
- D is La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof, where:
- D is not equal to Ln;
- if D is La, Ce, Pr, Nd, Pm, Sm, or a mixture thereof, then x is 0 to less than 4;
- if D is Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof, then x is 0 to about 2;
- and
- y is greater than 0 to about 1.
Dependencies are inferred from the claim text.