Corrosion Behavior of X80 and X70 Pipeline Steels in Beijing Soil Environment

摘要：

　　The corrosion behavior of X80 and X70 pipeline steels in Beijing soil environment was investigated by burying test in nature field for one and two years,while using SEM and XRD analyze the micro-morphology and phase composition of corrosion products of X80 and X70 pipeline steels.The results show that general corrosion has occurred mainly on the X80 and X70 pipeline steels in Beijing soil,with the pitting corrosion.With the increase of burying time,the corrosion rate of X80 and X70 pipeline steels remain steady,and the pitting corrosion depth increases.The corrosion rate of X80 steel is lower than that of X70 steel,and the pitting corrosion degree of X70 steel is more than X80 steel.The corrosion product of X80 and X70 pipeline steels can not protect the substrate,because of its incomplete,loose and incompact,and was consisted of α-FeOOH,β-FeOOH,γ-FeOOH,γ-Fe2O3 and Fe2O3.X80 steel exhibits higher corrosion resistance than X70 steel.

关键词： Pipeline steels Beijing soil Corrosion behavior.

作者: Min Zhu Cuiwei Du Xiaogang Li Liwei Wang Lin Fan Zhiyong Liu Hongxia Wan Yunying Xing

作者单位: Doctor, School of Materials Science and Engineering, University of Science and Technology Beijing;No Professor, School of Materials Science and Engineering, University of Science and Technology Beijing School of Materials Science and Engineering, University of Science and Technology Beijing

会议类型: 国际会议

会议名称: 第四十届国际海事委员会会议

会议地点: 北京

会议语种:英文

页码: 154-160

在线出版日期: 2012-10-14（万方平台首次上网日期，不代表论文的发表时间）