Environmental barrier coating
AssigneeRtx Corporation
InventorsXia Tang, Richard Wesley Jackson, James T. Beals, Kenneth David Smith
Life of this patent
Estimating the term…
Abstract
An example article according to the present disclosure includes, among other possible things, a metallic substrate, and a bond coat on the metallic substrate. The bond coat includes a matrix phase, gettering particles in the matrix phase, wherein the gettering particles are reactive with oxidants, and a dispersion of matrix modifier particles in the matrix phase. The example article also includes a diffusion barrier between the bond coat and the metallic substrate, wherein the diffusion barrier is configured to inhibit diffusion of components from the bond coat into the metallic substrate. An example composite material and method of applying a barrier to a substrate are also disclosed.
Claims18
An article comprising:
- a metallic substrate;
- and
- a bond coat on the metallic substrate, the bond coat including:
- a matrix phase,
- gettering particles in the matrix phase, wherein the gettering particles are reactive with oxidants, and
- a dispersion of matrix modifier particles in the matrix phase;
- and
- a diffusion barrier between the bond coat and the metallic substrate, wherein the diffusion barrier is configured to inhibit diffusion of components from the bond coat into the metallic substrate.
A composite material comprising:
- a bond coat, the bond coat comprising:
- a matrix,
- a dispersion of gettering particles in the matrix, wherein the gettering particles are reactive with oxidants and include metal silicides, and
- a dispersion of matrix modifier particles in the matrix;
- and
- a diffusion barrier, wherein the diffusion barrier inhibits diffusion of components out of the bond coat.
Dependencies are inferred from the claim text.