X70管线钢在内蒙古五地区土壤腐蚀的研究

腐蚀科学与防护技术, 2008, 20(5): 340-342.

X70管线钢在内蒙古五地区土壤腐蚀的研究

冯佃臣宋义全李涛霍林桃李晓刚

1.1内蒙古科技大学材料与冶金学院

包头 014010； 2北京科技大学腐蚀与防护中心

北京 100083

1.1School of Materials and Metallurgy

University of Science and Technology Inner Mongolia

2Corrosion and Protection Center of University of Science and TechnologyBeijing

Beijing 100083

基金项目: 自然科学基金项目(50461004)资助；教育部&ldquo 春晖计划&rdquo 基础研究项目(Z2004-2-15022)资助

关键词：土壤腐蚀 , soil corrosion , rate of corrosion , soil of Inner Mongolia

SOIL CORROSION BEHAVIOR OF X70 PIPELINE STEEL IN FIVE AREAS IN INNER MONGOLIA

FENG Dian-chen

Keywords： X70 pipeline steel , X70管线钢 , 腐蚀率 , 内蒙土

通过X70管线钢在内蒙古五地区（5个试验站）土壤埋片试验，采用现场埋片的方法，对X70管线钢在土壤中腐蚀进行研究.测定了X70管线钢在各试验站的一年腐蚀率.观察了腐蚀产物的宏观和微观的形貌，并通过EDS和XRD对腐蚀产物进行分析.结果表明：在各地区的腐蚀率相差很大，其中巴盟地区腐蚀率最大为8.2924 g/dm²·d.腐蚀产物主要是Fe₃O₄.

The soil corrosion of X70 pipeline steel in five areas in Inner Mongolia was studied by burying specimen firstly.And then the corrosion rate of X70 pipeline steel has been measured.The macrographic and microscopic appearance of the corroded samples were observed.The analysis of the corrosion products were carried out by using EDS and XRD.The results show that the difference of corrosion rate is large in the soils of the five areas.The maximum corrosion rate 8.2924 g/dm²·d is observed for the steel in the soil of BaMeng.The corrosion products are mainly Fe₃O₄.

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