| X70管线钢在模拟近中性土壤介质中的电化学特性 |
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| 引用本文： | 李明星,王荣,白真权.X70管线钢在模拟近中性土壤介质中的电化学特性[J].腐蚀科学与防护技术,2004,16(1):17-20. |
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| 作者姓名： | 李明星 王荣 白真权 |
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| 作者单位： | 1. 西安石油学院,西安,710065
2. 中国石油天然气集团公司管材研究所,西安,710065 |
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| 基金项目： | 中国石油天然气集团公司石油管力学和环境行为重点实验室基金项目(ZYT-0008) |
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| 摘 要： | 研究了X70管线钢在模拟近中性土壤介质中的电化学行为.结果表明：模拟近中性土壤介质中溶解的CO2会显著加速X70管线钢的腐蚀速度；阴极过程存在H+和H2O以及H2CO3、HCO-3的还原反应；但以HCO-3和H2CO3的还原为主，H+的还原反应不占主导因素.
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| 关 键 词： | X70管线钢 模中性土壤 电化学行为 |
| 文章编号： | 1002-6495(2004)01-0017-04 |
| 收稿时间： | 2002-11-15 |
| 修稿时间： | 2002年11月15 |
ELECTROCHEMICAL CHARACTERISTICS OF X70 PIPELINE STEEL IN A SYNTHETIC NEAR NEUTRAL SOIL SOLUTION |
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| LI Ming-xing,WANG Rong,BAI Zhen-quan
Xi ' an Petroleum Institute,Xi ' an ,China , Tubular goods research center of CNCP,Xi' an ,China.ELECTROCHEMICAL CHARACTERISTICS OF X70 PIPELINE STEEL IN A SYNTHETIC NEAR NEUTRAL SOIL SOLUTION[J].Corrosion Science and Protection Technology,2004,16(1):17-20. |
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| Authors: | LI Ming-xing WANG Rong BAI Zhen-quan
Xi ' an Petroleum Institute Xi ' an China Tubular goods research center of CNCP Xi' an China |
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| Affiliation: | LI Ming-xing,WANG Rong,BAI Zhen-quan
Xi ' an Petroleum Institute,Xi ' an 710065,China , Tubular goods research center of CNCP,Xi' an 710065,China |
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| Abstract: | The electrochemical behavior of X70 pipeline steel in a synthetic near neutral soil solution is investigated. Experimental results indicate that solute of CO2 can accelerate the corrosion rate of X70 pipeline steel in the synthetic near neutral soil solution. There are reduction reactions of H+, H2O, H2CO3 and HCO3- involved in the cathodic reaction process. And the reductions of H2CO3 and HCO3-are the dominant reactions in the cathodic reaction process, and the reduction of H+ is less important. |
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| Keywords: | X70 pipeline steel synthetic near neutral soil solution electrochemical behavior |
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