US 12,392,244 B2
Repair process using plasma etching
Xiaomei Fang, South Glastonbury, CT (US); and Jakob Reed, Holt, MI (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RAYTHEON TECHNOLOGIES CORPORATION, Farmington, CT (US)
Filed on Jun. 16, 2023, as Appl. No. 18/336,933.
Prior Publication US 2024/0418088 A1, Dec. 19, 2024
Int. Cl. F01D 5/00 (2006.01); B05D 3/14 (2006.01); F01D 5/28 (2006.01)
CPC F01D 5/005 (2013.01) [B05D 3/142 (2013.01); F01D 5/288 (2013.01); B05D 2202/25 (2013.01); B05D 2530/00 (2013.01); F05D 2230/80 (2013.01); F05D 2230/90 (2013.01); F05D 2300/121 (2013.01); F05D 2300/431 (2013.01); F05D 2300/611 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A repair process comprising:
providing a gas turbine engine article that includes an aluminum alloy substrate and an elastomeric coating disposed on the aluminum alloy substrate, and the elastomeric coating has an eroded region;
plasma etching the elastomeric coating in the eroded region, the plasma etching partially removing a surface portion of the elastomeric coating to create a new bonding surface on the elastomeric coating without removal of the elastomeric coating down to the aluminum alloy substrate; and
applying an elastomeric repair coating on the new bonding surface.