US 11,781,223 B2
Repair coating and method for repairing a damaged portion of a steel member
Waynie M. Schuette, Troy, IL (US); Marc J. Froning, Seattle, WA (US); and Stephen P. Gaydos, St. Louis, MO (US)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Feb. 23, 2022, as Appl. No. 17/678,190.
Claims priority of provisional application 63/211,052, filed on Jun. 16, 2021.
Prior Publication US 2022/0403527 A1, Dec. 22, 2022
Int. Cl. C23C 24/08 (2006.01); C22C 27/06 (2006.01)
CPC C23C 24/087 (2013.01) [C22C 27/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for repairing a damaged portion of a pre-existing coating on a steel member, the method comprising:
pretreating the damaged portion of the pre-existing coating on the steel member with an abrasive media to prepare for the repairing;
applying a coating composition to the damaged portion of the pre-existing coating on the steel member to produce a repair coating to repair the damaged portion, the repair coating interfacing with an undamaged portion of the pre-existing coating on the steel member, the coating composition comprising nickel, chromium, and carbon.