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Two Coat Inorganic Coatings System for Corrosion Resistance and Long-Life
Summary
Researchers evaluated a two-coat inorganic corrosion protection system for offshore wind towers combining a zinc silicate primer with a zinc-free silicate topcoat, designed to extend service life while reducing environmental impact. The silicate resin formulation was specifically noted as low-carbon and non-contributing to microplastic accumulation in the ocean, offering multi-decade corrosion inhibition.
Abstract Extending service life of an offshore wind tower brings value to the owner and has the added benefit of reducing environmental impact. Arguably the biggest threat to service- life is degradation. When constructing with steel, corrosion is the threat to mitigate. Coatings formulated with zinc dust have been the primary strategy for protection. Zinc dust incorporated into silicate resins is considered an inorganic zinc coating. In recent years silicate finishes made without zinc have entered the market to create a two- coat inorganic system offering unmatched corrosion protection in a finish with various color options. The silicate resin is low carbon and won’t contribute to microplastic accumulation in the ocean. This paper will explain what a two- coat inorganic corrosion resistant system is, how it works, what it looks like and most importantly how it extends the life- cycle of wind towers by inhibiting corrosion for decades.