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X80管线钢在格尔木土壤模拟溶液中的耐腐蚀性能.pdf
60 6 Vol60 No6 2009 6 CIESC Journal June 2009 X80 胥聪敏, 石 凯 ( , , 710065) : SEM XRD , X80 , , , X80 , , ; X80 ; eOOH ( ) e O ( ) ; X80 3 4 : X80 ; ; ; ; : TG 1727 : A : 0438- 1157 (2009) 06- 1513- 06 Corrosion resistance of X80 pipeline steel in simulated solution of Geermusoil XUCongmin, SHI Kai (K ey Laboratory of Materials Processing Eng ineering , School of Materials Science and Eng ineering, X i anS hiyou University , X i an 710065, S haanxi, China) Abstract: The corrosion resistance of X80 pipeline steel was investigated in simulated solution of Geermu soil in Qinghai province, by using mass loss method, electrochemical measurement, scanning electron microscopy and X- ray diffractionT he results showed that the average corrosion rate of X80 steel decreased obviously, but corrosion tendency increasedT his was induced by the change of corrosion morphology from uniform corrosion to pitting corrosionCathodic reaction was dominated by oxygen depolarization reactionT he corrosion product was basically eOOH ( surface layer) and e3 O4 ( inner layer) . The corrosion resistance and corrosion morphology of X80 steel samples was dependent on the integrity and - compactness of corrosion product filmsThe content of Cl dominated the corrosion severity Key ords: X80 pipeline steel; corrosion resistance; Geermu soil; simulated solution; corrosion product
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