Patent ID: 8919318

Claim:
A cylinder liner ( 20 ), comprising: a substrate ( 24 ) including an inner surface ( 26 ) extending around a center axis (A); a coating ( 22 ) disposed on said inner surface ( 26 ) of said substrate ( 24 ); said coating ( 22 ) including an intermediate layer ( 38 ), said intermediate layer ( 38 ) comprising, in weight percent (wt. %) of said intermediate layer ( 38 ), 40.0 to 60.0 wt. % carbon, 15.0 to 35.0 wt. % silicon, and 15.0 to 35.0 wt. % germanium; and said coating ( 22 ) including a protective layer ( 40 ), said protective layer ( 40 ) including, in weight percent (wt. %) of said protective layer ( 38 ), at least 90.0 wt. % carbon, wherein the weight of said layers ( 38 , 40 ) does not include the weight of any hydrogen present in said layers ( 38 , 40 ).