Production of a coating on the outer peripheral surface of a base body of a piston ring used in combustion engines comprises applying a lower layer to the peripheral surface by thermal spraying and applying an upper wear protection layer

摘要

Production of a coating on the outer peripheral surface (4) of a piston ring base body (1) comprises applying a lower layer (6) to the peripheral surface by thermal spraying and applying an upper wear protection layer (7) to the lower layer by vaporizing. The transition region between the lower layer and the wear protection layer has low roughness. - An INDEPENDENT CLAIM is also included for a piston ring having a base body with a coating on its outer peripheral surface.