Kathryn S Read

US Patent:

20200255351, Aug 13, 2020

Filed:

Feb 7, 2020

Appl. No.:

16/785142

Inventors:

- Farmington CT, US
Andrew J. Lazur - Laguna Beach CA, US
Kathryn S. Read - Marlborough CT, US

International Classification:

C04B 41/87
C04B 35/565

Abstract:

A method for forming ceramic matrix composite (CMC) component includes forming a fiber preform, positioning the fiber preform into a chemical vapor infiltration reactor chamber, and densifying the fiber preform. Densification includes infiltrating the fiber preform with a first gas comprising precursors of silicon carbide and infiltrating the fiber preform with a second gas comprising a first rare earth element, wherein the steps of infiltrating the fiber preform with the first gas and infiltrating the fiber preform with the second gas are conducted simultaneously to produce a first rare earth-doped silicon carbide matrix in a first region of the component.