Protective coating
AssigneeRaytheon Technologies Corporation
InventorsRichard Wesley Jackson, III, Xia Tang, James T. Beals
Life of this patent
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Abstract
A barrier layer for an article according to an exemplary embodiment of this disclosure, among other possible things includes a bond coat comprising a matrix, diffusive particles disposed in the matrix, and gettering particles disposed in the matrix. The composition of the gettering particles is a reaction product of the chemical reaction of Equation 1 defined by Equation 2: Si w O x C y N z + ξ O 2 = w Si O 2 + y CO + z 2 N 2 Equation 1 ξ = 2 w + y - x 2 Equation 2 A barrier layer is also disclosed.
Claims20
A barrier layer for an article, comprising:
- a bond coat comprising a matrix, diffusive particles disposed in the matrix, and gettering particles disposed in the matrix, wherein the composition of the gettering particles is a reaction product of the chemical reaction of Equation 1 defined by Equation 2:
- Si
- w
-
- O
- x
-
- C
- y
-
- N
- z
- +
- ξ
-
- O
- 2
- =
- w
-
- Si
-
- O
- 2
- +
- y
-
- CO
- +
- z
- 2
-
- N
- 2
- Equation
-
- 1
- ξ
- =
- 2
-
- w
- +
- y
- -
- x
- 2
- Equation
-
- 2
An article comprising:
- a substrate;
- and
- a barrier layer disposed on the substrate, the barrier layer comprising:
- a matrix of substantially pure silicon dioxide,
- diffusive particles disposed in the matrix, and
- gettering particles disposed in the matrix, wherein the composition of the gettering particles is a reaction product of the chemical reaction of Equation 1 defined by Equation 2:
- Si
- w
-
- O
- x
-
- C
- y
-
- N
- z
- +
- ξ
-
- O
- 2
- =
- w
-
- Si
-
- O
- 2
- +
- y
-
- CO
- +
- z
- 2
-
- N
- 2
- Equation
-
- 1
- ξ
- =
- 2
-
- w
- +
- y
- -
- x
- 2
- Equation
-
- 2
Dependencies are inferred from the claim text.