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| 温度、CO2分压、流速、pH值对X65管线钢 CO2均匀腐蚀速率的影响规律 | |
| 引用本文： | 龙凤乐,郑文军,陈长风,许振清,韩庆.温度、CO2分压、流速、pH值对X65管线钢 CO2均匀腐蚀速率的影响规律[J].腐蚀与防护,2005,26(7):290-293,286. |
| 作者姓名： | 龙凤乐 郑文军 陈长风 许振清 韩庆 |
| 作者单位： | 1. 胜利油田技术检测中心,东营,257000 2. 胜利油田安全环保处,东营,257000 3. 石油大学,北京,1002249 |
| 摘 要： | 研究了温度、流速、CO2分压以及pH值对X65管线钢腐蚀速率和腐蚀产物膜的影响规律。结果表明，温度升高以后，腐蚀产物膜的致密度明显增大，对基体的保护作用增强，降低腐蚀速率。在中低温区形成的腐蚀产物膜容易被流体破坏，导致了高的腐蚀速率。CO2分压对腐蚀产物膜的致密度没有明显的影响，分压增加10倍，腐蚀速率增加3～4倍。溶液中NaHCO3的含量增加以后pH值增加，腐蚀速率会明显下降。 |
| 关 键 词： | CO2腐蚀 均匀腐蚀速率 腐蚀产物膜 X65钢 |
| 文章编号： | 1005-748X(2005)07-0290-04 |
INFLUENCE OF TEMPERATURE, CO2 PARTIAL PRESSURE, FLOW RATE AND pH VALUE ON UNIFORM CORROSION RATE OF X65 PIPELINE STEEL |
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| LONG Feng-le,ZHENG Wen-jun,CHEN Chang-feng,XU Zhen-qing,HAN Qing.INFLUENCE OF TEMPERATURE, CO2 PARTIAL PRESSURE, FLOW RATE AND pH VALUE ON UNIFORM CORROSION RATE OF X65 PIPELINE STEEL[J].Corrosion & Protection,2005,26(7):290-293,286. | |
| Authors: | LONG Feng-le ZHENG Wen-jun CHEN Chang-feng XU Zhen-qing HAN Qing |
| Abstract: | The influences of temperature, CO_2 partial pressure, flow rate and pH value on uniform corrosion rate of X65 pipeline steel were studied. The compactness and protective ability of the corrosion product films increased and corrosion rate decreased with temperature rising. At low and moderate temperatures,corrosion product films might be destroyed by liquid flow, inducing high corrosion rate. CO_2 partial pressure had little effect on the compactness of corrosion product films. Increase of the concentration of NaHCO_3 in corrosive medium resulted in a remarkable decrease of the corrosion rate. |
| Keywords: | CO_2 corrosion Uniform corrosion Corrosion product film X65 steel |
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