Environmental barrier coating and method of making the same
AssigneeRtx Corporation
InventorsJames T. Beals, Justin B. Alms, Olivier H. Sudre
Life of this patent
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Abstract
A method of making spherical gettering particles for an environmental barrier coating according to an exemplary embodiment of this disclosure, among other possible things includes spraying liquid preceramic polymer into a chamber via a nozzle to form liquid droplets, curing the liquid droplets to form spherical particles in the chamber, and converting the spherical particles to spherical ceramic gettering particles in a fluidized bed. A method of making spherical gettering particles for an environmental barrier coating and an article are also disclosed.
Claims11
A method of making spherical gettering particles for an environmental barrier coating, comprising:
- spraying liquid preceramic polymer into a chamber via a nozzle to form liquid droplets;
- curing the liquid droplets to form spherical particles in the chamber;
- and
- converting the spherical particles to spherical ceramic gettering particles in a fluidized bed,
- wherein the curing occurs at a temperature below a temperature necessary to convert the liquid preceramic polymer into a ceramic,
- wherein the curing occurs at a temperature below about 500 degrees C.
A method of making spherical gettering particles for an environmental barrier coating, comprising:
- spraying liquid preceramic polymer into a chamber via a nozzle to form liquid droplets;
- curing the liquid droplets to form spherical particles in the chamber;
- and
- converting the spherical particles to spherical ceramic gettering particles in a fluidized bed,
- wherein the curing occurs at a temperature below a temperature necessary to convert the liquid preceramic polymer into a ceramic,
- wherein cross-linking of the preceramic polymer occurs during the curing.
A method of making spherical gettering particles for an environmental barrier coating, comprising:
- spraying liquid preceramic polymer into a chamber via a nozzle to form liquid droplets;
- curing the liquid droplets to form spherical particles in the chamber;
- and
- converting the spherical particles to spherical ceramic gettering particles in a fluidized bed,
- further comprising providing a catalyst with the liquid preceramic polymer, the catalyst operable to lower the curing temperature of the liquid preceramic polymer and increase its solidification rate.
Dependencies are inferred from the claim text.