Study on the Transformation of Corrosion Products on the Surface of Electric Steel Structure by Compound Rust Conversion

Abstract

The atmospheric corrosion of electric steel structure in strong electromagnetic field environment is serious. Sand blasting for rust removal is dangerous to operators due to its electric field environment. In this paper, phosphoric acid and phytic acid compound conversion solution is used to study the effect of different preparation technologies on the conversion of corrosion products on carbon steel surface. The experimental results revealed that phosphoric acid has a good dissolving capacity to the rust products, and the phytic acid was a superior complexing agent to the iron ion. The composited rust converter can well realize the purpose of rust conversion, and can form a layer on the surface of Q235 steel, which has certain protective effect to the steel.