PISTON RING

摘要

Disclosed is a piston ring (1) having a substrate (10) to which a wear resistant coating (20) is applied that includes at least one first element with a melting point Tm≦700° C. The wear resistant coating (20) contains at least one second element with a melting point Tm>760° C. The wear resistant coating also includes droplets (30) which have a diameter (D) and which contain at least the first element, wherein at least 90% of the droplets (30) have a value 1 μm≦D≦10 μm. In the method for producing a wear resistant coating (20) using an arc evaporation technique, the target material includes at least one first element with a melting point Tm≦700° C. and at least one second element with a melting point Tm>760° C., wherein the quantity of the second material contained in the target material is such that the melting point (Tm) of the target material ≧1000° C.

主权项

1. A piston ring having a substrate and a wear protection layer applied thereon, which has at least one first element, whose melting point Tm≦700° C., and
at least one second element having a melting point Tm>760° C. is contained in the wear protection layer, and droplets having a diameter D are present in the wear protection layer, said droplets containing at least the first element, wherein at least 90% of the droplets have a value 1 μm≦D≦10 μm.