ATMOSPHERIC CORROSIVITY FOR STEELS

J Chin Soc Corr Pro

1998, Vol. 18

Issue (1): 1-6 DOI:

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ATMOSPHERIC CORROSIVITY FOR STEELS

LIANG Cai-feng HOU Wen-tai (Qingdao Research Institute for Marine Corrosion; Beijing Central Iron & Steel Research Institute)

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Abstract The results of 8 year atmospheric exposure of 17 steels at 7 sites in China were examined. Some new concepts about the effect of time of wetness, pollution of sulfate and chloride were suggested. For carbon steels, humid and hot condition had significant effect during the long exposure. With addition of pollutants, severer corrosion might be observed. The applicability of international standard ISO9223, which illustrated the classification of corrosivity by means of meteorology and pollution data, was discussed. The relative corrosivity order arranged according to one year exposure data was different from that deduced from long term exposure results. It was not appropriate to evaluate corrosivity only by means of one year exposure.

Key words: Atmospheric corrosion Steel Environment factors Atmospheric corrosivity

Received: 25 February 1998

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LIANG Cai-feng HOU Wen-tai (Qingdao Research Institute for Marine Corrosion; Beijing Central Iron & Steel Research Institute). ATMOSPHERIC CORROSIVITY FOR STEELS. J Chin Soc Corr Pro, 1998, 18(1): 1-6.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1998/V18/I1/1

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5 Southwell C R, Bultman J D. In: Ailer W H ed. Atmospheric Corrosion, New York: John Weiley & Sons, 1982. 934

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