Iron Phosphide

Commercial iron phosphide anticorrosive pigments consist of Fe2P, with traces of FeP and SiO2. These pigments are powders with a metallic gray color [5.56]. They are described as conductivity enhancers that are designed as a partial substitute for zinc dust in zinc-rich organic and inorganic coatings. When replacing zinc dust by up to 50% in a coating, there will be the possibility of improving the weldability. The partial use of iron phosphide leads to a reduction in price [5.89]. Compared to the utilization of zinc dust and lamellar zinc flakes, iron phosphides have not reached such an economic importance in the market.

5.2.7

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