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Anti-corrosion Mechanism of Rust Layers with Atmospheric Corrosion Resistance

Liwei Ma

Open publisher page 1 citations

Abstract

During the initial corrosion period,the growing rule and anli-corrosion mechanism of rust layers with atmospheric corrosion resistance had been studied for a weathering steel and a carbon steel,using an accelerate industrial atmospheric corrosion test of dry-wet cyclic immersion.SEM and XRD were used to measure the rust layer structure.The results showed that: during the initial corrosion period,the composition of rust layers of the weathering steel was mainly α-FeOOH and that of the carbon steel was mainly Fe2O3.The dentrite of α-FeOOH is fine and the rust layers are compact and protective.The dentrite of Fe2O3 is big and the rust layers are loose,porous and non-protedive.

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What this paper is about

During the initial corrosion period,the growing rule and anli-corrosion mechanism of rust layers with atmospheric corrosion resistance had been studied for a weathering steel and a carbon steel,using an accelerate industrial atmospheric corrosion test of dry-wet cyclic immersion.SEM and XRD were used to measure the rust layer structure.The results showed that: during the initial corrosion period,the composition of rust layers of the weathering steel was mainly α-FeOOH and that of the carbon steel was mainly Fe2O3.The dentrite of α-FeOOH is fine and the rust layers are compact and protective.The dentrite of Fe2O3 is big and the rust layers are loose,porous and non-protedive.

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Available abstract

During the initial corrosion period,the growing rule and anli-corrosion mechanism of rust layers with atmospheric corrosion resistance had been studied for a weathering steel and a carbon steel,using an accelerate industrial atmospheric corrosion test of dry-wet cyclic immersion.SEM and XRD were used to measure the rust layer structure.The results showed that: during the initial corrosion period,the composition of rust layers of the weathering steel was mainly α-FeOOH and that of the carbon steel was mainly Fe2O3.The dentrite of α-FeOOH is fine and the rust layers are compact and protective.The dentrite of Fe2O3 is big and the rust layers are loose,porous and non-protedive.

Key concepts: Corrosion, Weathering steel, Rust (programming language), Metallurgy, Materials science, Weathering, Carbon steel, Porosity

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