US 12,352,172 B2
Seal slot with coating
Raymond Surace, Newington, CT (US); Robert A. White, III, Meriden, CT (US); Howard J. Liles, Newington, CT (US); and Bryan P. Dube, Chepachet, RI (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on Nov. 29, 2022, as Appl. No. 18/071,070.
Prior Publication US 2024/0175368 A1, May 30, 2024
Int. Cl. F01D 11/00 (2006.01)
CPC F01D 11/00 (2013.01) [F05D 2230/90 (2013.01); F05D 2300/603 (2013.01); F05D 2300/611 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A method of coating a seal slot, comprising:
1) Applying a coating to a slot in a first component;
2) machining the coating to provide an open height configured to receive a seal, such that a ratio of a thickness of the coating to the open height is less than or equal to about 2, and wherein after the machining a surface roughness of the coating is less than about 100 ra; and
wherein a ceramic seal is positioned in the slot in the first component;
forming a slot in a second component using steps 1) and 2), and putting the ceramic seal in the slot in the second component;
the first component is formed of a ceramic material and the second component is formed of a metallic material;
wherein the coating has a porosity of less than about 5%; and
wherein the applying of step 1) includes filling in the entirety of the slot with the coating and then machining the coating of step 2) to reach the open height.