SLXTEEN-YEAR ATMOSPHERIC CORRSION EXPOSURE STUDY OF STEELS

J Chin Soc Corr Pro

2005, Vol. 25

Issue (1): 1-6 DOI:

Research Report

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SLXTEEN-YEAR ATMOSPHERIC CORRSION EXPOSURE STUDY OF STEELS

Caifeng Liang;Wentai Hou

山东青岛钢铁研究总院海洋腐蚀研究所

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Abstract Sixteen-year atmospheric exposures of 17 steels at 7 sites were made.Power function D=Atn can describe the corrosion process quite well.The pattern of corrosion development in te early stage is different from that in the long-term exposure.It is not proper to determine corrosivity of an environment by means of one-year exposure result,a method stipulated by ISO - 9226. It is also not correct to predict the long - term coorrosionresults by short - term exposurt.The major damaging pollution factors are sulphur dioxide and chloride ion. The effect of sulphur dioxide is serious in the early exposure years.It is no longer so in the later years.Environment factor of humid hot os much more important in long run.In addition of chloride ion pollution,an extradinary high corrosion can be resulted in mild steels.

Key words: atospheric corrosion steel environment factor

Received: 15 July 2003

ZTFLH:

TG172.3

Corresponding Authors: Caifeng Liang

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Caifeng Liang; Wentai Hou. SLXTEEN-YEAR ATMOSPHERIC CORRSION EXPOSURE STUDY OF STEELS. J Chin Soc Corr Pro, 2005, 25(1): 1-6 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2005/V25/I1/1

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