Anticorrosion pigments based on zinc phosphate

Increasing of regulations and warnings for conservation of environment and human well-being have clearly revealed a necessity of replacing new and non-toxic types of anticorrosion pigment. From the proposed compounds, zinc phosphate pigments have gained an appropriate spot among different industries, although there is a big gap between inhibition performance of zinc phosphate and chromate pigments. The changes in cationic, anionic or both parts of the primary zinc phosphate pigment have resulted in production of second and third generations of zinc phosphate pigment. In this paper, the anti corrosion pigments based on zinc phosphate and its new generations in different aspects of mechanism, synthesis, anticorrosion properties and characterization have been studied.