The steel structures of offshore wind turbine foundations have so far only been protected cathodically (galvanic anodes/impressed current systems) in the underwater area. More recent German regulations recommend an additional coating in order to reduce the required anode masses (1). In most cases, organic top coatings are used for this purpose, which significantly reduces the necessary protective current requirement. However, organic top coatings lose their barrier protection effect due to damage, defects and ageing, which increases the protective current requirement again. Mechanical loads already during transport and installation ("pile driving"), as well as (hydro-)abrasion by sand near the seabed during the period of use, make it useful to consider the tribological properties.

Subject
Steel structures, Zinc rich coatings, Materials, Anodic protection, Cathodic protection, Zinc anodes, Spray coating, Steel, Metallic coatings, Corrosion protection, Corrosion resistance, Cathodic corrosion, Thermal spray coatings
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2022
Association for Materials Protection and Performance (AMPP)
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