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金属埋地管道电流腐蚀规律研究

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摘要 针对交流杂散电流对埋地钢质管道腐蚀问题,通过室内模拟实验建立了交流电流密度与破损面积、土壤电阻率、交流干扰电压以及防腐层电阻率数学模型,从而间接获取交流电流密度,并研究了交流电流密度对腐蚀速率的影响。研究表明,破损面积、交流干扰电压、土壤电阻率、防腐层电阻率对交流杂散电流密度具有显著的影响;电流密度小于3mA/cm2时交流电流腐蚀危害性很小,在3~10mA/cm2时腐蚀危害性较大,大于10mA/cm2时。
作者 石志超
出处 《中国石油和化工标准与质量》 2013年第10期82-82,共1页 China Petroleum and Chemical Standard and Quality
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