Research on the Influences of Phosphorus on Corrosion resistance in Low Carbon Steels

J Chin Soc Corr Pro

2007, Vol. 27

Issue (3): 137-141 DOI:

Research Report

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Research on the Influences of Phosphorus on Corrosion resistance in Low Carbon Steels

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钢铁研究总院结构材料研究所

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Abstract The effects of phosphorus on corrosion resistance of low carbon steels have been investigated by cyclic corrosion test、SEM and micro-Raman analysis. The results indicate that phosphorus can increase corrosion resistance of low carbon steels especially at the early stage of atmospheric corrosion. The reason is :with the effect of water and oxygen, the phosphorus enriched on the face of steels was hydrolyzed ,then phosphate was formed .This kind of phosphate cover on the cranny and holes in rust and resist water and oxygen’s passing. Moreover, the can accelerate the air oxidation of Fe2+ to Fe3+ and the formation of stable rust . As a result , the corrosion resistance of high phosphorus steels was improved .

Key words: corrosion resistance phosphate protective rust

Received: 28 December 2005

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;. Research on the Influences of Phosphorus on Corrosion resistance in Low Carbon Steels. J Chin Soc Corr Pro, 2007, 27(3): 137-141 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2007/V27/I3/137

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