Coating for metal components, method for coating a metal component, piston for internal combustion engines and motor vehicle

• Main Authors: STOTHARD NIGEL, UNGAR STEFAN, PROCOPIO ANDREA
• Format: Patent
• Language: Chinese; English
• Published: 14.12.2016
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention relates to an abrasion-resistant and friction-reduced coating for metal components. The coating comprises an inner layer (1), an intermediate layer (2) and an outer layer (3). The inner layer (1) is intended to be applied to the metal component and comprises at least one layer selected from: a metal layer, a metal-carbide layer, a metal-nitride layer, a metal-carbide-nitride layer and a metal-containing hydrocarbon layer. The intermediate layer (2) comprises at least one layer of amorphous carbon and the outer layer (3) comprises a W-C:H layer or a a-C:H* layer. A maximum layer thickness (d) of the coating is at most 5 [mu]m. The coating is suitable in particular as a piston coating for use in internal combustion engines. 本发明涉及用于金属构件的耐磨和减摩的涂层。所述涂层包括内层(1)、中间层(2)和覆盖层(3)。将内层(1)设计成施加在金属构件上并且包括至少个选自如下的层：金属层、金属碳化物层、金属氮化物层、金属碳氮化物层和含金属的烃层。中间层(2)包括至少个无定形碳层并且覆盖层(3)包括W-C:H-层或a-C:H*-层。涂层的最大层厚度(d)为至多5μm。所述涂层特别适合作为用于内燃机的活塞涂层。