US 11,840,675 B2
Organosiloxane-based surface treatments for enhancing the adhesion and lubricity of metal surfaces
Daniel W. Huff, Huntsville, AL (US); James A. Moore, Madison, AL (US); Justin J. Robertson, Mesa, AZ (US); and Gregory T. Strawder, Chandler, AZ (US)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Nov. 16, 2022, as Appl. No. 18/055,962.
Application 18/055,962 is a division of application No. 16/856,287, filed on Apr. 23, 2020, granted, now 11,530,362.
Prior Publication US 2023/0089804 A1, Mar. 23, 2023
Int. Cl. C10M 139/04 (2006.01); C10M 103/06 (2006.01); C10M 125/04 (2006.01)
CPC C10M 103/06 (2013.01) [C10M 139/04 (2013.01); C10M 125/04 (2013.01); C10M 2201/0663 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A coated substrate (304) comprising:
a substrate (304) having a surface (305);
a sol-gel film (302) on the surface (305) of the substrate (304), the sol-gel film (302) comprising:
one or more silanol coupling agents;
lubricating particles; and
a dichromate salt;
wherein the concentration of silanol coupling agents in the sol-gel film (302) is in the range from 20 wt. % to 70 wt. %, based on the solids content of the sol-gel film, the concentration of the dichromate salt in the sol-gel film (302) is in the range from 0.1 wt. % to 10 wt. %, based on the solids content of the sol-gel film (302), and the concentration of lubricating particles in the sol-gel film (302) is in the range from 10 wt. % to 80 wt. %, based on the solids content of the sol-gel film (302); and
an organic coating (306) on the sol-gel film (302).