US 11,655,194 B2
Ceramic composites with an intermediate layer having a carbon sink material for high temperature applications
Krishan Lal Luthra, Schenectady, NY (US); Glen Harold Kirby, Liberty Township, OH (US); Julin Wan, Rexford, NY (US); and Larry Steven Rosenzweig, Clifton Park, NY (US)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Oct. 17, 2019, as Appl. No. 16/655,626.
Prior Publication US 2021/0114944 A1, Apr. 22, 2021
Int. Cl. C04B 41/00 (2006.01); C04B 35/80 (2006.01); C04B 41/50 (2006.01); C04B 41/52 (2006.01)
CPC C04B 41/009 (2013.01) [C04B 35/80 (2013.01); C04B 41/5057 (2013.01); C04B 41/5059 (2013.01); C04B 41/5071 (2013.01); C04B 41/522 (2013.01); C04B 2235/3826 (2013.01); C04B 2235/5244 (2013.01)] 19 Claims
OG exemplary drawing
1. A coated component comprising:
a ceramic substrate having a surface;
an intermediate layer directly on the surface of the ceramic substrate, wherein the intermediate layer comprises 50% to 99%, by weight of silicon carbide and a carbon-sink material dispersed within the silicon carbide, wherein the carbon-sink material inhibits accumulation of free carbon from a carbon-containing species within the intermediate layer, the ceramic substrate, or both; and
an environmental barrier coating on the intermediate layer.