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US 11,530,167 B2Granted
Silicon oxycarbide environmental barrier coating
AssigneeRaytheon Technologies Corporation
InventorsXia Tang, Paul Sheedy, Tania Bhatia Kashyap, Wayde R. Schmidt, Daniel G. Goberman
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Abstract
An article includes a ceramic-based substrate and a barrier layer on the ceramic-based substrate. The barrier layer includes a matrix of barium-magnesium alumino-silicate or SiO2, a dispersion of silicon oxycarbide particles in the matrix, and a dispersion of particles, of the other of barium-magnesium alumino-silicate or SiO2, in the matrix.
Claims20
An article, comprising:
- a ceramic-based substrate;
- and
- a barrier layer on the ceramic-based substrate having a first, outward facing, side and a second side adjacent the ceramic-based substrate, the barrier layer including barium-magnesium alumino-silicate particles and silicon oxycarbide particles in a matrix, wherein an average maximum dimension of the barium-magnesium alumino-silicate particles is less than an average maximum dimension of the silicon oxycarbide particles.
An article, comprising:
- a ceramic-based substrate;
- a first layer including barium-magnesium alumino-silicate particles and silicon oxycarbide particles in a silicon dioxide matrix;
- a second layer including silicon oxycarbide particles in a silicon dioxide matrix;
- and
- a topcoat, the topcoat including one or more layers of an oxide-based material.
2 more elements
Dependencies are inferred from the claim text.