| 不同CO_2压力下形成的N80钢腐蚀产物膜特征 |
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| 引用本文： | 柳伟,陈东,路民旭. 不同CO_2压力下形成的N80钢腐蚀产物膜特征[J]. 北京科技大学学报, 2010, 32(2) |
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| 作者姓名： | 柳伟 陈东 路民旭 |
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| 作者单位： | 北京科技大学新材料技术研究院,北京,100083 |
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| 基金项目： | 北京市教育委员会共建项目建设计划(No.SYS100080419) |
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| 摘 要： | 对N80钢在不同CO2压力下进行高温、高压腐蚀实验,根据失重法计算N80钢的腐蚀速率,利用扫描电镜观察腐蚀产物膜的微观形态,分析腐蚀产物膜的厚度和Ca元素含量,利用电化学阻抗谱和极化曲线法测试了腐蚀产物膜的电化学性能,并对腐蚀产物膜与基体间的剪切强度进行了测试.结果表明,随CO2压力增加,N80钢腐蚀速率增大;腐蚀产物膜晶粒尺寸基本不变,膜中微观缺陷数量逐渐增多;腐蚀产物膜电阻和反应电阻呈逐渐增加的趋势;腐蚀产物膜与N80钢基体结合的剪切强度下降,促进了N80钢的腐蚀.
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| 关 键 词： | N80钢 腐蚀产物 电化学性能 力学性能 CO2腐蚀 |
Characteristics of N80 steel corrosion scales forming under different CO_2 pressures |
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| LIU Wei,CHEN Dong,LU Min-xu. Characteristics of N80 steel corrosion scales forming under different CO_2 pressures[J]. Journal of University of Science and Technology Beijing, 2010, 32(2) |
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| Authors: | LIU Wei CHEN Dong LU Min-xu |
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| Abstract: | Corrosion experiments of N80 steel were conducted under different CO 2 pressures by a high temperature and high pressure autoclave.The corrosion rate of N80 steel was calculated by the mass-loss method,the micrograph,thickness and Ca content of the corrosion scales were observed by scanning electron microscopy,and the electrochemical properties were measured and analyzed by electrochemical impedance spectra and potentiodynamic polarization.The shear strengths between the corrosion scale and the N80 steel su... |
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| Keywords: | N80 steel corrosion scale electrochemical property mechanical property CO_2 corrosion |
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