US 12,441,663 B2
Method for fabricating a ceramic material
Paul Sheedy, Vernon, CT (US); Wayde R. Schmidt, Pomfret Center, CT (US); and Tania Bhatia Kashyap, West Hartford, CT (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on Jul. 18, 2023, as Appl. No. 18/354,119.
Application 18/354,119 is a division of application No. 16/791,119, filed on Feb. 14, 2020, granted, now 11,739,027.
Application 15/618,874 is a division of application No. 13/859,093, filed on Apr. 9, 2013, granted, now 9,701,591, issued on Jul. 11, 2017.
Application 16/791,119 is a continuation of application No. 15/618,874, filed on Jun. 9, 2017, granted, now 10,562,825, issued on Feb. 18, 2020.
Application 13/859,093 is a continuation in part of application No. 13/271,294, filed on Oct. 12, 2011, granted, now 9,533,919, issued on Jan. 3, 2017.
Prior Publication US 2025/0026691 A1, Jan. 23, 2025
Int. Cl. C04B 35/80 (2006.01); C03C 8/02 (2006.01); C03C 8/20 (2006.01); C03C 10/00 (2006.01); C04B 35/571 (2006.01); C04B 35/589 (2006.01); C04B 35/626 (2006.01); C04B 35/628 (2006.01); C04B 35/76 (2006.01); C04B 41/00 (2006.01); C04B 41/50 (2006.01); C04B 41/81 (2006.01); C04B 41/85 (2006.01); C04B 41/86 (2006.01); C04B 41/88 (2006.01)
CPC C04B 35/80 (2013.01) [C03C 8/02 (2013.01); C03C 8/20 (2013.01); C03C 10/0027 (2013.01); C03C 10/0045 (2013.01); C03C 10/0054 (2013.01); C04B 35/571 (2013.01); C04B 35/589 (2013.01); C04B 35/6269 (2013.01); C04B 35/62842 (2013.01); C04B 35/62844 (2013.01); C04B 35/76 (2013.01); C04B 41/0072 (2013.01); C04B 41/009 (2013.01); C04B 41/5022 (2013.01); C04B 41/81 (2013.01); C04B 41/85 (2013.01); C04B 41/86 (2013.01); C04B 41/88 (2013.01); C03C 2209/00 (2013.01); C04B 2235/3891 (2013.01); C04B 2235/40 (2013.01); C04B 2235/404 (2013.01); C04B 2235/408 (2013.01); C04B 2235/421 (2013.01); C04B 2235/48 (2013.01); C04B 2235/483 (2013.01); C04B 2235/522 (2013.01); C04B 2235/5244 (2013.01); C04B 2235/5248 (2013.01); C04B 2235/5252 (2013.01); C04B 2235/5268 (2013.01); C04B 2235/616 (2013.01); C04B 2235/6584 (2013.01); C04B 2235/80 (2013.01); C04B 2235/9607 (2013.01); Y10T 428/249967 (2015.04); Y10T 428/249969 (2015.04); Y10T 428/24997 (2015.04)] 9 Claims
OG exemplary drawing
 
1. A ceramic article comprising:
a ceramic matrix composite including a porous reinforcement structure and a ceramic matrix within pores of the porous reinforcement structure, the ceramic matrix composite including a surface zone comprised of an exterior surface of the ceramic matrix composite and pores that extend from the exterior surface into the ceramic matrix composite;
a glaze material sealing the surface zone within the pores of the surface zone and on the exterior surface of the surface zone as an exterior glaze layer on the ceramic matrix composite, wherein the glaze material is a borosilicate glass (BSG) material, and the ceramic matrix composite including an interior zone under the surface zone, the interior zone being free of any of the glaze material and having a greater porosity than the surface zone; and
wherein the glaze material has a composition including, by weight, 10 to 30% Boron Oxide, B2O3, 0 to 4% Aluminum Oxide, Al2O3, 0 to 8% Sodium Oxide, Na2O, and 65 to 85% Silicon Dioxide, SiO2.