| X70管线钢在CO32-/HCO3-溶液中的电化学行为研究 |
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| 引用本文： | 许淳淳,池琳,胡钢.X70管线钢在CO32-/HCO3-溶液中的电化学行为研究[J].腐蚀科学与防护技术,2004,16(5):268-271. |
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| 作者姓名： | 许淳淳 池琳 胡钢 |
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| 作者单位： | 北京化工大学材料科学与工程学院,北京,100029 |
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| 基金项目： | 国家重点基础研究发展规划项目 (G19990 65 0 ) |
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| 摘 要： | 采用动电位扫描技术研究了X70管线钢在CO32-/HCO3-溶液中的电化学行为.通过分析X70管线钢在Na2CO3/NaHCO3溶液中的极化曲线，讨论了HCO3-的浓度对阳极极化行为的影响.采用快扫描与慢扫描得到的结果，分别利用Parkins边界条件和应力腐蚀破裂（SCC）参数Pi，预测出X70管线钢在1 mol/L NaHCO3+0.5mol/L Na2CO3溶液中的SCC敏感性电位区间，两种方法得到的结果基本一致.
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| 关 键 词： | 管线钢 溶液 扫描 应力腐蚀 |
ELECTROCHEMICAL BEHAVIOR OF X70 PIPELINE STEEL IN CARBONATE-BICARBONATE SOLUTION |
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| XU Chun chun,CHI lin,HU Gang School of Materials Science and Technology,Beijing University of Chemical Technology,Beijing.ELECTROCHEMICAL BEHAVIOR OF X70 PIPELINE STEEL IN CARBONATE-BICARBONATE SOLUTION[J].Corrosion Science and Protection Technology,2004,16(5):268-271. |
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| Authors: | XU Chun chun CHI lin HU Gang School of Materials Science and Technology Beijing University of Chemical Technology Beijing |
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| Affiliation: | XU Chun chun,CHI lin,HU Gang School of Materials Science and Technology,Beijing University of Chemical Technology,Beijing 100029 |
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| Abstract: | Potentiodynamic polarization measurement was used to study corrosion behavior of X70 pipeline steel in carbonate-bicarbonate solution.The effect of concentration of HCO 3 - to anodic polarization behavior was determined by anodic polarization curves.With the results obtained by the fast and slow scanning rate curves, boundary conditions which was promoted by Parkins and Stress Corrosion Cracking (SCC) parameter Pi were used to forecast potential range of susceptibility to SCC of X70 pipeline steel in 1mol/L NaHCO 3+0 5 mol/L Na 2CO 3 solution.The results were in accordance with each other. |
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| Keywords: | pipeline steel carbonate-bicarbonate solution potentiodynamic polarization measurement scanning rate stress corrosion cracking |
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