An overview on the anti-corrosion properties of the pigments based on iron oxide nanoparticles

Javidparvar, Aliasghar; Ramezanzadeh, Bahram; Ghasemi, Ebrahim

An overview on the anti-corrosion properties of the pigments based on iron oxide nanoparticles

Authors

¹ Department of Minning an d Metallurgical Engineering, Amirkabir University of Technology

² Surface Coating and Corrosion Department, Institute for Color Science and Technology

³ Inorganic Pigment and Glazes Department, Institute for Color Science and Technology

Abstract

In recent years, corrosion protection of the steel structures by organic coatings has led to a lot of cost payment. Organic coatings due to their barrier properties against corrosion species access to the steel surface can protect the steel against corrosion. However, the corrosive electrolyte diffusion into the coating matrix through porosities and damaged parts leads to the coating hydrolytic degradation resulting in the decrease of coating barrier performance. To overcome this problem and improve the corrosion protection properties of the coatings, various kinds of anti-corrosive pigments are used. Chromates are one of the most effective anti-corrosive pigments. Since chromate-based pigments have high toxicity and environmental hazards, researchers are tried to investigate the alternative materials that reduce environmental hazards and also have a good anti-corrosion properties. Due to the non-toxic, low cost and availability of the iron oxide based pigments, the researchers attention directed to the investigation of their properties. The motivation of this study is to provide an overview of the methods for the synthesis of the anti-corrosion pigments based on iron oxide and the relationship between the structure and particle size with their anti-corrosion properties. Also, the methods for improving the anti-corrosion properties of these pigments will be considered.

Keywords