| 油井采出液成分与温度对Q235钢腐蚀行为的影响 |
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| 引用本文： | 周永璋,曾建民,张坚. 油井采出液成分与温度对Q235钢腐蚀行为的影响[J]. 机械工程材料, 2008, 32(12) |
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| 作者姓名： | 周永璋 曾建民 张坚 |
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| 作者单位： | 南京工业大学环境学院;广西大学物理学院; |
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| 基金项目： | 新材料及其制备新技术广西区重点实验室开放式基金资助项目 |
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| 摘 要： | 采用称重法研究了油井采出液成分与温度对Q235钢腐蚀行为的影响;运用极化曲线和滞后环等电化学方法结合SEM和XRD等方法,研究了Q235钢的腐蚀机理。结果表明:采出液中Cl-、SO42-对腐蚀速率影响较大,而HCO3-、Ca2+影响较小;随着Cl-、SO42-浓度的增大试验钢的腐蚀速率增大;随着HCO3-浓度的增大试验钢的腐蚀速率先增大后减小;Ca2+浓度很小时,对试验钢的腐蚀速率没有明显的影响,但当Ca2+质量浓度达到240 mg.L-1时,腐蚀速率迅速降低;在80℃之前,试验钢的腐蚀速率随温度升高而加快;试验钢的腐蚀机理为垢下腐蚀。
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| 关 键 词： | Q235钢 腐蚀 极化曲线 油井采出液 垢下腐蚀 |
Effect of Component and Temperature of the Oil-well Produced Water on Corrosion Behavior of Q235 Steel |
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| ZHOU Yong-zhang,ZENG Jlan-min,ZHANG Jian. Effect of Component and Temperature of the Oil-well Produced Water on Corrosion Behavior of Q235 Steel[J]. Materials For Mechanical Engineering, 2008, 32(12) |
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| Authors: | ZHOU Yong-zhang ZENG Jlan-min ZHANG Jian |
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| Abstract: | The effect of component and temperature of the oil-well produced water on the corrosion behavior of Q235 steel was studied using weight loss test method.Corrosion mechanisms of Q235 steel in the produced water were studied by electrochemical measurements such as polarization curves and hysteresis loop combined with SEM and XRD.The results shows that Cl-and SO2-4 had greater effect on the corrosion rate of Q235 steel than HCO-3 and Ca2+.Corrosion rate of the Q235 steel were accelerated always with the increa... |
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| Keywords: | Q235 steel corrosion polarization curve oil-well produced water under-deposit corrosion |
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