New developments for vacuum coating of steel strips-中国Betway体育网页登陆

摘要 Vapordepositedcoatingsontostripsteelareapromisingalternativeasfunctionallayersforcorrosionprotectionorhighabrasionresistance.Conventionalcoatingsystemshavesomelimitsregardingenvironmentalcompatibility,therangeofcoatingmaterialsandapplicationproperties.Physicalvapordeposition(PVD)isanenvironment-friendlytechnologyandenablesnearlyunlimitedmaterialandprocessvariety.Electronbeamhigh-rateevaporationwithdepositionratesuptosomemicrometerspersecondisthemostproductivePVDtechnologyforlowcostcoating.Thecombinationofevaporationwithpowerfulplasmaisanefficientwaytoimprovethelayerproperties.Thedevelopedplasmasourcescanbeusedforspecialplasmaenhancedchemicalvapordeposition(PECVD)processestoo.Thepapergivesanoverviewaboutthelatestdevelopmentsinthesetechnologies.Furthermore,thepaperexplainssomeexamplesofnewlayerstacksontosteelstrips.Whileenhancedcorrosionprotectioncanbeobtainedbymagnesium,aluminiumorcoppercontainingcoatingsotherfunctionalsurfacepropertiescomemoreandmoreinthefocusofinterest.Forinstance,decorativegoldcoloredlayers,transparentscratchresistantlayers,hardcoatingsandphotocatalyticlayersweredepositedonrunningsteelstrips.Functionallayersandlayersystemsforenergysavingandsunenergyabsorptionbysolarthermaleffectsandphotovoltaicsareunderdevelopment.Thecoatingsarepreparedundertheconditionsofveryhighdepositionratesusingourin-linevacuumcoaterformetallicstripsandsheetswiththenameMAXI.Theinfluenceoftheprocessandplasmaparametersonthelayerpropertieswereinvestigatedandwillbedemonstratedforsomeapplications.

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New developments for vacuum coating of steel strips

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