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埋地管道直流干扰腐蚀研究Ⅱ-地表电位梯度检测

翁永基,李英义,李相怡,韩昌柴

Corrosion Science and Protection Technology（2010）

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Abstract
地表电位梯度指标容易检测,但根据现有标准难以获得管道杂散干扰腐蚀的有用信息.本文采用新的方法测量电位梯度,并根据测量数据,解析出二种电流成分:地表干扰电流和流入(出)管道的电流;后者和实际杂散干扰腐蚀有良好相关,电流流出管道的位置代表阴极保护管道的腐蚀活性点.
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Key words
Buried pipeline,Corrosion activity,Dc interference corrosion,Mathematical expressions,Potential gradient in surface
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