THE INITIAL STAGE OF ATMOSPHERIC CORROSION OF CARBON AND WEATHERING STEEL IN BEIJING CITY ATMOSPHERE

J Chin Soc Corr Pro

2005, Vol. 25

Issue (4): 193-199 DOI:

Research Report

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THE INITIAL STAGE OF ATMOSPHERIC CORROSION OF CARBON AND WEATHERING STEEL IN BEIJING CITY ATMOSPHERE

Cui Lin;;

北京科技大学材料学院腐蚀与防护中心

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Abstract This paper focuses on the initial corrosion behavior of carbon and weathering steel.The surface morphology of corrosion layer,corrosion products,structure and alloy elements of rust layer in natural city atmosphere were studied by metallographic observation,SEM and XRD.The results show that the rust layer of weathering steel was a little denser than that of carbon steel at the initial corrosion period.Two layers partly formed in both carbon and weathering steel after 25 days,there was no essential difference of corrosion products in both of them.The ifference in rust layer was mainly due to the function of alloy elements.Cu,Cr elements were found in rust layer of weathering steel.They were concentrated in the cracks and voids,which prevented water,oxygen and pollutants penetrating to the steel substrate.

Key words: Beijing city atmosphere carbon steel weathering steel atmospheric corrosion alloy elements

Received: 06 April 2004

ZTFLH:

TG172.3

Corresponding Authors: Cui Lin E-mail: Lincui@soun.com

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Cite this article:

Cui Lin. THE INITIAL STAGE OF ATMOSPHERIC CORROSION OF CARBON AND WEATHERING STEEL IN BEIJING CITY ATMOSPHERE. J Chin Soc Corr Pro, 2005, 25(4): 193-199 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2005/V25/I4/193

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