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油田输油管线钢X65的腐蚀行为研究
Authors
侯保荣
刘栓
+3 more
赵霞
陈建敏
陈长伟
Publication date
1 January 2015
Publisher
Abstract
研究了胜利埕岛油田用X65管线钢的管内腐蚀和管外腐蚀行为。通过失重法和电化学测试手段研究了油田中油水混合物流速和油含量对X65钢输油管线钢管内腐蚀行为的影响规律。采用动电位极化曲线和电化学阻抗谱研究了X65钢在土壤渗出液中的管外腐蚀行为,并结合X射线衍射技术(XRD)和扫描电镜(SEM)技术对X65钢腐蚀产物的晶型和形貌进行了分析。结果表明:X65钢的腐蚀速率随油水混合物流速的增加而增大,当油含量为5%(质量分数)时,其腐蚀速率最大;X65钢在土壤渗出液中的自腐蚀电流密度随浸泡时间的延长而增大,表面生成的疏松腐蚀产物膜会加速阴极去极化反应
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Last time updated on 22/01/2018