US 12,331,395 B2
Method of repairing ceramic composite articles
Olivier H. Sudre, Glastonbury, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RTX Corporation, Farmington, CT (US)
Filed on Jan. 15, 2021, as Appl. No. 17/150,451.
Prior Publication US 2022/0228256 A1, Jul. 21, 2022
Int. Cl. C23C 16/04 (2006.01); C04B 41/00 (2006.01); C04B 41/45 (2006.01); C23C 16/02 (2006.01); C23C 16/32 (2006.01); C23C 16/455 (2006.01); C23C 16/48 (2006.01); F01D 5/00 (2006.01)
CPC C23C 16/047 (2013.01) [C04B 41/0036 (2013.01); C04B 41/4531 (2013.01); C23C 16/0227 (2013.01); C23C 16/32 (2013.01); C23C 16/325 (2013.01); C23C 16/45563 (2013.01); C23C 16/483 (2013.01); F01D 5/005 (2013.01); F05D 2230/314 (2013.01); F05D 2300/6033 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of repairing an article comprising:
cleaning a repair area wherein cleaning the repair area comprises contacting the repair area with an oxidant, halogen, or combination thereof,
wherein the repair area comprises a ceramic matrix composite; and
depositing a ceramic material in the cleaned repair area using laser assisted chemical vapor deposition;
wherein the deposited ceramic material includes material used in the matrix of the ceramic matrix composite; and
wherein the deposited ceramic material has less than 10% porosity; and
wherein the article is located in a vacuum chamber with a flowing gas precursor and depositing the ceramic material comprises locally heating the repair area with a laser to convert the gas precursor to the ceramic material, wherein the laser rasters the repair area; and
wherein the method of repairing the article is not a molten method.