| 高含H2S/CO2介质中X60钢腐蚀产物膜分析 |
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| 引用本文： | 张雷,丁睿明,杨建炜,路民旭.高含H2S/CO2介质中X60钢腐蚀产物膜分析[J].北京科技大学学报,2009,31(5). |
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| 作者姓名： | 张雷 丁睿明 杨建炜 路民旭 |
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| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京,100083
2. 北京科技大学材料科学与工程学院,北京,100083;中国石油天然气管道工程有限公司,廊坊,065000 |
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| 基金项目： | 国家自然科学基金资助项目(No.50701007) |
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| 摘 要： | 利用高温高压H2S反应釜进行腐蚀模拟实验,研究X60钢在高压H2S/CO2共存条件下的腐蚀规律,并利用扫描电子显微镜和X射线衍射等方法观察用分析了腐蚀产物膜的形貌和组成.在H2S/CO2分压比为1.74、H2S分压0.15～2.0 MPa条件下,腐蚀产物以硫铁化合物为主,未见碳酸亚铁,X60钢腐蚀过程由H2S控制.H2S分压较低时腐蚀产物以四方FeS1-x为主,H2S分压2.0 MPa时则出现六方FeS、六方Fe1-xS和立方FeS2.疏松的富S腐蚀产物及腐蚀产物膜局部剥落促使高H2S分压时X60钢出现明显局部腐蚀,并使全面腐蚀速率随H2S分压升高先升后降.
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| 关 键 词： | X60钢 气体腐蚀 腐蚀产物膜 局部腐蚀 |
Analysis of corrosion scales on X60 steel under high H2S/CO2 content environments |
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| ZHANG Lei,DING Rui-ming,YANG Jian-wei,LU Min-xu.Analysis of corrosion scales on X60 steel under high H2S/CO2 content environments[J].Journal of University of Science and Technology Beijing,2009,31(5). |
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| Authors: | ZHANG Lei DING Rui-ming YANG Jian-wei LU Min-xu |
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| Abstract: | Corrosion of X60 steel under high-pressure H_2S/CO_2 coexist environment was investigated using a high-temperature and high-pressure H_2S autoclave.The structure and constitution of corrosion scales were studied through scanning electron microscopy(SEM) and X-ray diffraction(XRD).Corrosion experiments were carried out under situations with the same H_2S/CO_2 partial pressure ratio(1.74) and different H_2S partial pressures from 0.15 MPa to 2.0 MPa.The results show that the corrosion scales mainly consist of... |
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| Keywords: | X60 steel gas corrosion corrosion scale localized corrosion |
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