Bearing assembly with surface layer

Abstract

A bearing assembly is disclosed that includes a first component with a first bearing surface, and a second component with a second bearing surface. A fluid is disposed between the first bearing surface and the second bearing surface supporting the first bearing surface and the second bearing surface in a non-contact rotational relationship. The first bearing surface, or the second bearing surface, or both the first bearing surface and the second bearing surface include a surface layer with solid lubricant 2D nanoparticles in a matrix.

1 .- 17 . (canceled) 
     
     
         18 . A bearing comprising a support, a bump foil over the support, a top foil over the bump foil, and a surface layer over the bump foil comprising solid lubricant 2D nanoparticles in a matrix, said nanoparticles having 1 to 20 atoms along a first dimension and being present in the surface layer in a concentration of 35 wt. % to 72 wt. % based on total weight of the surface layer. 
     
     
         19 . The bearing of  claim 18 , wherein the solid lubricant 2D nanoparticles comprise graphene, hexagonal boron nitride, molybdenum disulfide or combinations thereof graphene. 
     
     
         20 . The bearing of  claim 18 , wherein the solid lubricant 2D nanoparticles have a thickness of  1  to  20  atomic layers and include an x-y planar dimension of 10 nm to 25 μm.