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 + ? ? O 2 = w ? Si ? O 2 + y ? CO + z 2 ? N 2 Equation ? 1 ? = 2 ? w + y - x 2 Equation ? 2 A barrier layer is also disclosed.

Abstract: An article according to an exemplary embodiment of this disclosure, among other possible things includes a substrate and a barrier layer on the substrate. The barrier layer includes a bond coat comprising a matrix, diffusive particles disposed in the matrix, and gettering particles disposed in the matrix; and a topcoat including a constituent that is reactive with calcium-magnesium-alumino-silicate (CMAS). An article and a method applying a calcium-magnesium-alumino-silicate (CMAS)-resistant topcoat are also disclosed.

Abstract: An article according to an exemplary embodiment of this disclosure, among other possible things includes a substrate and a barrier layer on the substrate. The barrier layer includes a bond coat comprising a matrix, diffusive particles disposed in the matrix, and gettering particles disposed in the matrix; a topcoat; and a porous interlayer disposed between the topcoat and the bond coat. The porous interlayer has a porosity that is greater than a porosity of the topcoat. A slurry composition for applying an interlayer to an article and method of applying a top coat to an article are also disclosed.

Abstract: An article according to an exemplary embodiment of this disclosure, among other possible things includes a substrate and a barrier layer on the substrate. The barrier layer includes a bond coat comprising a matrix, diffusive particles disposed in the matrix, and gettering particles disposed in the matrix. At least about 10% of the gettering particles are in a crystalline phase. The article also includes a top coat. An article is also disclosed.

Abstract: A method of applying a top coat to an article according to an exemplary embodiment of this disclosure, among other possible things includes providing an article having a bond coat; applying a slurry directly onto the bond coat, the slurry including particles of a top coat material and at least one sintering aid in a carrier fluid; and sintering the top coat. A slurry composition for applying a top coat to an article is also disclosed.

Abstract: A method of repairing a coating on an article according to an exemplary embodiment of this disclosure, among other possible things includes defining a work area surrounding a discontinuity in the coating, the coating including undisturbed bond coat and undisturbed top coat; removing coating material within the work area; applying a slurry containing bond coat constituents in a carrier fluid to the work area; curing the slurry to form a repaired bond coat; applying a slurry containing top coat constituents in a carrier fluid to the work area; and curing the slurry to form a repaired top coat. A method of repairing a coating on an article and an article are also disclosed.

Abstract: A gas turbine engine component having a substrate; a thermal barrier coating on the substrate having a porous microstructure; and a reflective layer conforming to the porous microstructure of the thermal barrier coating, wherein the reflective layer comprises a conforming nanolaminate defined by alternating layers of platinum group metal materials selected from the group consisting of platinum group metal-based alloys, platinum group metal intermetallic compounds, mixtures of platinum group metal with metal oxides and combinations thereof. A capping layer can be added over the reflective layer. A supporting layer can be added between the reflective layer and the thermal barrier coating. A process is also disclosed.

Abstract: A method of making a ceramic matrix composite according to an exemplary embodiment of this disclosure, among other possible things includes forming a ceramic matrix composite component by infiltrating an array of ceramic-based fibers with a ceramic-based matrix. The array of ceramic-based fibers forms a surface that includes gaps between adjacent ones of the fibers. The method also includes applying a paste including filler particles and filler matrix in a carrier fluid to the surface of the ceramic-based fibers that includes the gaps such that the paste fills the gaps and removing the carrier fluid to leave behind a filler including the filler particles and the filler matrix in the gaps. A ceramic matrix composite component is also disclosed.

Abstract: A coating according to an exemplary embodiment of this disclosure, among other possible things includes a bond coat including gettering particles and diffusive particles dispersed in a matrix; a top coat disposed over the bond coat, the top coat includes metal silicate particles; and an intermediate layer between the bond coat and the top coat. The intermediate layer includes hafnium silicate particles and matrix. A concentration of metal silicate in the intermediate layer is less than a concentration of metal silicate in the top coat. An article is also disclosed.

Abstract: A coating according to an exemplary embodiment of this disclosure, among other possible things includes a bond coat including gettering particles and diffusive particles dispersed in a matrix, a top coat disposed over the bond coat, and an intermediate layer between the bond coat and the top coat. The intermediate layer includes non-silicate oxide particles dispersed in a matrix. An article and a method of protecting a ceramic-based substrate are also disclosed.

Abstract: Disclosed herein is a ceramic matrix composite comprising a preform comprising a plurality of plies; a ceramic matrix encompassing the plies and distributed through the plies; and thermally conducting particles distributed through the ceramic matrix. Disclosed herein is a method comprising distributing thermally conducting particles between plies in a preform; infiltrating chemical vapors of a ceramic precursor into the plies; and reacting the ceramic precursor to form a matrix.